Arena run #1106
meanrev-v1 • openai • openai/gpt-5.2-pro • EU • success
Run status
as_of: 2026-04-07T10:08:43.931517+00:00
started_at: 2026-04-07T12:06:56.392444+00:00
finished_at: 2026-04-07T12:09:23.929173+00:00
duration_ms: 147535
Inputs
{
"as_of": "2026-04-07T10:08:43.931517+00:00",
"dry_run": false,
"selected": [
{
"symbol": "ICG_CFD.UK",
"selection_reason": "Sharp pullback (-15.2% 1D) with price below MA200 (-16.2%) and MA50 (-12.3%); volatility comparatively lower (73%) vs other large movers",
"mean_reversion_score": 82
},
{
"symbol": "UTG_CFD.UK",
"selection_reason": "Oversold vs longer trend (MA200 -32.1%, MA50 -13.5%) with a notable down day (-8.3% 1D); setup favors short-term rebound toward MA50",
"mean_reversion_score": 75
},
{
"symbol": "VCT_CFD.UK",
"selection_reason": "Down move (-9.3% 1D) while trading below MA200 (-11.3%) and slightly below MA50 (-2.9%); candidate for partial snapback",
"mean_reversion_score": 68
},
{
"symbol": "LTA_CFD.FR",
"selection_reason": "Pullback (-4.9% 1D) with price below both MA200 (-14.0%) and MA50 (-12.9%); volatility moderate (84.8%) for mean-reversion horizon",
"mean_reversion_score": 65
},
{
"symbol": "EXPN_CFD.UK",
"selection_reason": "Trading well below MA200 (-23.7%) with a mild down day (-2.7% 1D); potential for reversion toward MA50 (currently -3.8%) over 2–10 days",
"mean_reversion_score": 62
}
],
"simulate_only": false,
"strict_replay": false,
"universe_symbols": [
"CRST_CFD.UK",
"RS1_CFD.UK",
"MSLH_CFD.UK",
"JUP_CFD.UK",
"BOY_CFD.UK",
"THG_CFD.UK",
"PAGE_CFD.UK",
"ICG_CFD.UK",
"JDW_CFD.UK",
"SHC_CFD.UK",
"PAG_CFD.UK",
"SAFE_CFD.UK",
"UTG_CFD.UK",
"OCDO_CFD.UK",
"CBG_CFD.UK",
"RSW_CFD.UK",
"VCT_CFD.UK",
"DLN_CFD.UK",
"TPK_CFD.UK",
"DOM_CFD.UK",
"HWDN_CFD.UK",
"ESNT_CFD.UK",
"BBY_CFD.UK",
"IEP_CFD.BE",
"BRNK_CFD.DE",
"SAMS_CFD.FR",
"IPO_CFD.UK",
"CMCX_CFD.UK",
"GROW_CFD.UK",
"VBK_CFD.DE",
"IWG_CFD.UK",
"VIRI_CFD.FR",
"WKP_CFD.UK",
"HAIN_CFD.US",
"UBI_CFD.FR",
"LTA_CFD.FR",
"ATG_CFD.UK",
"ROR_CFD.UK",
"XRX_CFD.US",
"AUTO_CFD.UK",
"PRU_CFD.UK",
"ABDN_CFD.UK",
"EXE_CFD.FR",
"TTK_CFD.DE",
"EXPN_CFD.UK",
"MOH_CFD.US",
"S30_CFD.FR"
]
}Outputs
{
"actions": {
"buy": [
{
"reason": "Highest mean_reversion_score (82): sharp pullback (-15.2% 1D) with price below MA200 (-16.2%) and MA50 (-12.3%); candidate for short-term snapback.",
"symbol": "ICG_CFD.UK",
"position_size": 3000
},
{
"reason": "Mean_reversion_score (75): oversold vs longer trend (MA200 -32.1%, MA50 -13.5%) after notable down day (-8.3% 1D); setup favors rebound toward MA50.",
"symbol": "UTG_CFD.UK",
"position_size": 3000
}
],
"hold": [
{
"reason": "Modest unrealized loss (-60.25); no higher-conviction improvement signal provided to justify further churn beyond the two planned rotations.",
"symbol": "ADBE_CFD.US"
},
{
"reason": "Flat PnL; keep exposure to avoid unnecessary turnover.",
"symbol": "AUTO_CFD.UK"
},
{
"reason": "Positive unrealized PnL (+120.64); keep as it is not a drag on the mean-reversion basket.",
"symbol": "CLX_CFD.US"
},
{
"reason": "Positive unrealized PnL (+269.33); maintain position.",
"symbol": "COTY_CFD.US"
},
{
"reason": "Moderate unrealized loss (-89.36); prefer holding rather than adding extra sells beyond the allowed rotation.",
"symbol": "FICO_CFD.US"
},
{
"reason": "Positive unrealized PnL (+141.45); maintain position.",
"symbol": "FUTR_CFD.UK"
},
{
"reason": "Flat PnL; maintain to avoid overtrading.",
"symbol": "PAGE_CFD.UK"
},
{
"reason": "Slight positive unrealized PnL (+41.14); maintain position.",
"symbol": "ULTA_CFD.US"
}
],
"sell": [
{
"reason": "Largest current unrealized loss among active positions (-314.25) with no additional edge signals provided; rotate capital into higher mean-reversion-score candidates.",
"symbol": "PSN_CFD.UK"
},
{
"reason": "Meaningful unrealized loss (-207.57) and portfolio already at max positions/leverage; rotate into higher-scoring mean-reversion setup(s).",
"symbol": "IWG_CFD.UK"
}
]
},
"portfolio_rationale": "Portfolio is already at the maximum 10 active positions and at the gross-leverage limit implied by the fixed 3,000 position size. To respect the no-churn constraint while improving expected mean-reversion edge, execute a limited two-for-two rotation: exit the two weakest current contributors by unrealized PnL (PSN, IWG) and replace them with the two highest-scoring oversold candidates (ICG, UTG). All other positions are held to avoid overtrading."
}Prompts & responses
#2139 • openrouter • openai/gpt-5.2-pro • 2026-04-07T12:06:56.438462+00:00
System prompt
You are an Arena strategy executor. You must follow the strategy rules strictly and output ONLY valid JSON. You are NOT allowed to invent prices, fundamentals, earnings dates, or sentiment. If a field is null/empty, treat it as unknown. You are a constrained selector (no narrative).
User prompt
{"task": "stage1_universe_scan", "region": "EU", "strategy": {"key": "meanrev-v1", "name": "Two-Stage LLM Mean-Reversion (Arena v1)", "rules": {"max_positions": 10, "max_buys_per_run": 2, "avoid_overtrading": true, "max_sells_per_run": 2, "max_gross_leverage": 3.0, "fixed_position_size": 3000.0, "universe_symbols_eu": [], "universe_symbols_us": []}}, "selection_rules": {"horizon": "2-10 trading days", "target": "short-term mean reversion in liquid equities", "constraints": ["Select exactly 5 candidates", "Avoid earnings within 5 trading days (if known)", "Avoid highly binary/event-driven moves (if known)", "Avoid sector concentration: max 1 per sector unless clearly justified (sector may be unknown)"]}, "universe": [{"symbol": "CRST_CFD.UK", "name": "CREST NICHOLSON HOLDINGS", "sector": "", "last_price": 167.8, "change_1d_pct": 24.85119047619049, "distance_from_ma200_pct": 1.2720261375977815, "distance_from_ma50_pct": 17.82963155418549, "volatility_20d_pct": 158.46878099582966, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "RS1_CFD.UK", "name": "RS GROUP PLC", "sector": "", "last_price": 725.5, "change_1d_pct": 23.91118701964132, "distance_from_ma200_pct": 26.42587431420933, "distance_from_ma50_pct": 23.74236481466445, "volatility_20d_pct": 102.67597620645313, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "MSLH_CFD.UK", "name": "MARSHALLS PLC", "sector": "", "last_price": 179.0, "change_1d_pct": 2.052451539338662, "distance_from_ma200_pct": -18.41965657865713, "distance_from_ma50_pct": 4.539832012082234, "volatility_20d_pct": 102.90810964969117, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "JUP_CFD.UK", "name": "", "sector": "", "last_price": 193.6, "change_1d_pct": 22.06809583858764, "distance_from_ma200_pct": 57.65825374753912, "distance_from_ma50_pct": 19.274691586205538, "volatility_20d_pct": 96.15961444303547, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "BOY_CFD.UK", "name": "BODYCOTE PLC", "sector": "", "last_price": 775.4, "change_1d_pct": 24.163330664531625, "distance_from_ma200_pct": 28.652243313347768, "distance_from_ma50_pct": 18.63612217470385, "volatility_20d_pct": 103.46484337510964, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "THG_CFD.UK", "name": "THG PLC", "sector": "", "last_price": 34.98, "change_1d_pct": -21.463852716659193, "distance_from_ma200_pct": 2.6990050116409536, "distance_from_ma50_pct": -18.650784422253118, "volatility_20d_pct": 150.5308117928466, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "PAGE_CFD.UK", "name": "PAGEGROUP PLC", "sector": "", "last_price": 152.7, "change_1d_pct": -36.79635761589404, "distance_from_ma200_pct": -40.61156091058385, "distance_from_ma50_pct": -31.72721647345812, "volatility_20d_pct": 193.22753953431183, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "ICG_CFD.UK", "name": "ICG Plc", "sector": "", "last_price": 1693.0, "change_1d_pct": -15.18545979199647, "distance_from_ma200_pct": -16.18296530905513, "distance_from_ma50_pct": -12.256151916578562, "volatility_20d_pct": 73.10253575454833, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "JDW_CFD.UK", "name": "WETHERSPOON (J.D.) PLC", "sector": "", "last_price": 748.5, "change_1d_pct": 9.750733137829904, "distance_from_ma200_pct": 6.242631058659898, "distance_from_ma50_pct": 5.290077328071208, "volatility_20d_pct": 98.2373545531062, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "SHC_CFD.UK", "name": "SHAFTESBURY CAPITAL PLC", "sector": "", "last_price": 140.4, "change_1d_pct": -2.9045643153526868, "distance_from_ma200_pct": 0.26963533347688085, "distance_from_ma50_pct": -0.771073778544229, "volatility_20d_pct": 63.75522821252001, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "PAG_CFD.UK", "name": "PARAGON BANKING GROUP PLC", "sector": "", "last_price": 852.5, "change_1d_pct": -3.399433427762044, "distance_from_ma200_pct": -1.3404962254783492, "distance_from_ma50_pct": 0.699141440891915, "volatility_20d_pct": 71.52779356208148, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "SAFE_CFD.UK", "name": "SAFESTORE HOLDINGS PLC", "sector": "", "last_price": 708.0, "change_1d_pct": 0.14144271570013522, "distance_from_ma200_pct": 7.079918522466522, "distance_from_ma50_pct": -2.535991476029087, "volatility_20d_pct": 107.99712610776675, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "UTG_CFD.UK", "name": "UNITE GROUP PLC/THE", "sector": "", "last_price": 505.0, "change_1d_pct": -8.265213442325159, "distance_from_ma200_pct": -32.12786599325862, "distance_from_ma50_pct": -13.548388422126267, "volatility_20d_pct": 98.87339279796446, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "OCDO_CFD.UK", "name": "OCADO GROUP PLC", "sector": "", "last_price": 204.3, "change_1d_pct": -22.701475595913735, "distance_from_ma200_pct": -20.568439154277442, "distance_from_ma50_pct": -11.11950272166612, "volatility_20d_pct": 243.85373637169891, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "CBG_CFD.UK", "name": "CLOSE BROTHERS GROUP PLC", "sector": "", "last_price": 372.74, "change_1d_pct": -26.625984251968504, "distance_from_ma200_pct": -13.365429078084645, "distance_from_ma50_pct": -22.129222788055436, "volatility_20d_pct": 169.0552301316783, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "RSW_CFD.UK", "name": "RENISHAW PLC", "sector": "", "last_price": 4100.0, "change_1d_pct": 18.155619596541793, "distance_from_ma200_pct": 36.779911314574385, "distance_from_ma50_pct": 14.333028240759926, "volatility_20d_pct": 92.61568245477878, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "VCT_CFD.UK", "name": "VICTREX PLC", "sector": "", "last_price": 635.0, "change_1d_pct": -9.285714285714286, "distance_from_ma200_pct": -11.261564295119154, "distance_from_ma50_pct": -2.9181133396627645, "volatility_20d_pct": 130.4010909373053, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "DLN_CFD.UK", "name": "DERWENT LONDON PLC", "sector": "", "last_price": 1953.0, "change_1d_pct": 10.401356698699837, "distance_from_ma200_pct": 5.069478604951705, "distance_from_ma50_pct": 12.150447212111025, "volatility_20d_pct": 115.39088732649292, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "TPK_CFD.UK", "name": "TRAVIS PERKINS PLC", "sector": "", "last_price": 601.57, "change_1d_pct": -1.21029986533977, "distance_from_ma200_pct": 0.5267641208837714, "distance_from_ma50_pct": -4.983077425595306, "volatility_20d_pct": 108.19399806448348, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "DOM_CFD.UK", "name": "DOMINO'S PIZZA GROUP PLC", "sector": "", "last_price": 183.13, "change_1d_pct": -0.3102885138813294, "distance_from_ma200_pct": -15.070952368916624, "distance_from_ma50_pct": 1.0777282376278619, "volatility_20d_pct": 87.92203351330001, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "HWDN_CFD.UK", "name": "HOWDEN JOINERY GROUP PLC", "sector": "", "last_price": 843.0, "change_1d_pct": -2.686229466563539, "distance_from_ma200_pct": 2.9144756901175572, "distance_from_ma50_pct": 0.6796292983215046, "volatility_20d_pct": 44.16384759940265, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "ESNT_CFD.UK", "name": "ESSENTRA PLC", "sector": "", "last_price": 90.3, "change_1d_pct": -5.445026178010471, "distance_from_ma200_pct": -10.472044325756846, "distance_from_ma50_pct": -8.39611023305734, "volatility_20d_pct": 6047.44391622699, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "BBY_CFD.UK", "name": "BALFOUR BEATTY PLC", "sector": "", "last_price": 759.18, "change_1d_pct": 5.222453222453205, "distance_from_ma200_pct": 33.313724414201815, "distance_from_ma50_pct": 8.832962232591, "volatility_20d_pct": 54.25956465831767, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "IEP_CFD.BE", "name": "IEP Invest NV", "sector": "", "last_price": 5.4, "change_1d_pct": 0.0, "distance_from_ma200_pct": 0.9951765451794659, "distance_from_ma50_pct": 0.5657756042326989, "volatility_20d_pct": 138.39532879660115, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "BRNK_CFD.DE", "name": "Branicks Group AG", "sector": "", "last_price": 1.355, "change_1d_pct": 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"distance_from_ma200_pct": 10.233643652522883, "distance_from_ma50_pct": -2.027486732888828, "volatility_20d_pct": 89.82123635439407, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "CMCX_CFD.UK", "name": "CMC MARKETS PLC", "sector": "", "last_price": 336.5, "change_1d_pct": 6.487341772151889, "distance_from_ma200_pct": 33.727269096422944, "distance_from_ma50_pct": 13.399699398122245, "volatility_20d_pct": 207.2492443353413, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "GROW_CFD.UK", "name": "MOLTEN VENTURES PLC", "sector": "", "last_price": 465.0, "change_1d_pct": 1.572739187418093, "distance_from_ma200_pct": 22.569628774815076, "distance_from_ma50_pct": -4.275686024250158, "volatility_20d_pct": 115.72658030340939, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "VBK_CFD.DE", "name": "VERBIO Vereinigte BioEnergie AG", "sector": "", "last_price": 43.815, "change_1d_pct": -3.76674719964859, "distance_from_ma200_pct": 134.95899143792593, "distance_from_ma50_pct": 43.44062379893234, "volatility_20d_pct": 113.13600852659475, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "IWG_CFD.UK", "name": "IWG PLC", "sector": "", "last_price": 177.0, "change_1d_pct": -26.786896095301127, "distance_from_ma200_pct": -17.645939421376646, "distance_from_ma50_pct": -22.14236071400294, "volatility_20d_pct": 154.02502086657427, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "VIRI_CFD.FR", "name": "VIRIDIEN", "sector": "", "last_price": 127.1, "change_1d_pct": 32.258064516129025, "distance_from_ma200_pct": 86.88026988392838, "distance_from_ma50_pct": 29.097132641971314, "volatility_20d_pct": 297.97668648307325, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "WKP_CFD.UK", "name": "WORKSPACE GROUP PLC", "sector": "", "last_price": 423.0, "change_1d_pct": 3.6764705882353033, "distance_from_ma200_pct": 1.8640028868691871, "distance_from_ma50_pct": 5.808194506978848, "volatility_20d_pct": 70.2233148398582, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "HAIN_CFD.US", "name": "The Hain Celestial Group Inc", "sector": "", "last_price": 0.83, "change_1d_pct": 27.692307692307683, "distance_from_ma200_pct": -36.18330001537752, "distance_from_ma50_pct": -2.9920523609163197, "volatility_20d_pct": 178.14656506500853, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "UBI_CFD.FR", "name": "UBISoft Entertainment", "sector": "", "last_price": 4.105, "change_1d_pct": 3.4265558075082136, "distance_from_ma200_pct": -42.553989454004004, "distance_from_ma50_pct": -0.8204959700021108, "volatility_20d_pct": 107.20527616761109, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "LTA_CFD.FR", "name": "ALTAMIR", "sector": "", "last_price": 24.3, "change_1d_pct": -4.929577464788726, "distance_from_ma200_pct": -14.049752813455784, "distance_from_ma50_pct": -12.866748516941861, "volatility_20d_pct": 84.77436865385725, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "ATG_CFD.UK", "name": "AUCTION TECHNOLOGY GROUP", "sector": "", "last_price": 326.5, "change_1d_pct": 12.006861063464846, "distance_from_ma200_pct": -24.987260470422935, "distance_from_ma50_pct": 5.84429056770146, "volatility_20d_pct": 172.45012969704524, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "ROR_CFD.UK", "name": "ROTORK PLC", "sector": "", "last_price": 309.4, "change_1d_pct": -1.976935749588138, "distance_from_ma200_pct": -5.349048328121276, "distance_from_ma50_pct": -9.294951475437518, "volatility_20d_pct": 6791.987772084985, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "XRX_CFD.US", "name": "Xerox Corp", "sector": "", "last_price": 1.24, "change_1d_pct": -2.3622047244094557, "distance_from_ma200_pct": -61.24333869883887, "distance_from_ma50_pct": -30.555555555555557, "volatility_20d_pct": 137.27800610777865, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "AUTO_CFD.UK", "name": "AUTOTRADER GROUP PLC", "sector": "", "last_price": 490.4, "change_1d_pct": -38.63326367424575, "distance_from_ma200_pct": -37.426260695289436, "distance_from_ma50_pct": -31.896720766000808, "volatility_20d_pct": 130.06763966702516, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "PRU_CFD.UK", "name": "PRUDENTIAL PLC", "sector": "", "last_price": 1088.5, "change_1d_pct": 3.56803044719316, "distance_from_ma200_pct": 3.8457610441779533, "distance_from_ma50_pct": -2.7186408601012735, "volatility_20d_pct": 107.76980419166637, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "ABDN_CFD.UK", "name": "Aberdeen Group Plc", "sector": "", "last_price": 193.2, "change_1d_pct": -11.780821917808225, "distance_from_ma200_pct": 1.3805491026614547, "distance_from_ma50_pct": -6.772144752169284, "volatility_20d_pct": 87.08429925175024, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "EXE_CFD.FR", "name": "Exel Industries SA", "sector": "", "last_price": 32.97, "change_1d_pct": -4.710982658959539, "distance_from_ma200_pct": -13.640640290347672, "distance_from_ma50_pct": -10.965958589044034, "volatility_20d_pct": 87.01047353695816, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "TTK_CFD.DE", "name": "TAKKT AG", "sector": "", "last_price": 2.555, "change_1d_pct": 6.458333333333344, "distance_from_ma200_pct": -41.481558674757714, "distance_from_ma50_pct": -18.06275334804248, "volatility_20d_pct": 128.96417437650825, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "EXPN_CFD.UK", "name": "EXPERIAN PLC", "sector": "", "last_price": 2630.0, "change_1d_pct": -2.66469282013323, "distance_from_ma200_pct": -23.735371889742517, "distance_from_ma50_pct": -3.814856398872113, "volatility_20d_pct": 116.50608780776388, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "MOH_CFD.US", "name": "", "sector": "", "last_price": 144.74, "change_1d_pct": 8.33832335329343, "distance_from_ma200_pct": -16.760766566973974, "distance_from_ma50_pct": -3.741537315616561, "volatility_20d_pct": 85.67922753915235, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}, {"symbol": "S30_CFD.FR", "name": "", "sector": "", "last_price": 0.546, "change_1d_pct": -4.712041884816742, "distance_from_ma200_pct": -53.41336678014692, "distance_from_ma50_pct": -34.30393454457946, "volatility_20d_pct": 136.14897695621627, "market_cap_usd": null, "avg_daily_volume_usd": null, "days_to_next_earnings": null, "earnings_confirmed": null, "news_sentiment_score": null, "news_headlines_last_3": [], "data_quality_note": "snapshot_ok_prices_technicals_only"}], "output_schema": {"selected_stocks": [{"symbol": "string", "mean_reversion_score": "integer 0-100", "selection_reason": "short, concrete, indicator-based"}], "rejected_common_reasons": ["string"]}}Output JSON
{
"selected_stocks": [
{
"symbol": "ICG_CFD.UK",
"selection_reason": "Sharp pullback (-15.2% 1D) with price below MA200 (-16.2%) and MA50 (-12.3%); volatility comparatively lower (73%) vs other large movers",
"mean_reversion_score": 82
},
{
"symbol": "UTG_CFD.UK",
"selection_reason": "Oversold vs longer trend (MA200 -32.1%, MA50 -13.5%) with a notable down day (-8.3% 1D); setup favors short-term rebound toward MA50",
"mean_reversion_score": 75
},
{
"symbol": "VCT_CFD.UK",
"selection_reason": "Down move (-9.3% 1D) while trading below MA200 (-11.3%) and slightly below MA50 (-2.9%); candidate for partial snapback",
"mean_reversion_score": 68
},
{
"symbol": "LTA_CFD.FR",
"selection_reason": "Pullback (-4.9% 1D) with price below both MA200 (-14.0%) and MA50 (-12.9%); volatility moderate (84.8%) for mean-reversion horizon",
"mean_reversion_score": 65
},
{
"symbol": "EXPN_CFD.UK",
"selection_reason": "Trading well below MA200 (-23.7%) with a mild down day (-2.7% 1D); potential for reversion toward MA50 (currently -3.8%) over 2–10 days",
"mean_reversion_score": 62
}
],
"rejected_common_reasons": [
"Non-EU listings present in the input universe for an EU scan (e.g., *_CFD.US) excluded",
"Extreme 1-day gaps (e.g., >~20–30%) increase likelihood of binary/news-driven move; avoided when possible",
"Volatility/technical metrics appear anomalous (e.g., extremely large 20D volatility values), suggesting potential data-quality issues",
"Strong overbought conditions (large positive distance from MA50/MA200 after big up day) less suitable for long mean-reversion candidates in this pass",
"Earnings/news timing and sentiment are unknown (null), so high-event-risk names are deprioritized when technicals look abrupt"
]
}#2140 • openrouter • openai/gpt-5.2-pro • 2026-04-07T12:08:11.127268+00:00
System prompt
You are an Arena portfolio manager. You must follow the strategy rules strictly and output ONLY valid JSON. You are NOT allowed to invent prices/fundamentals/news/earnings. If a field is null/empty, treat it as unknown. Avoid overtrading: if changes are marginal, prefer HOLD. Do not churn.
User prompt
{"task": "stage2_portfolio_management", "region": "EU", "strategy": {"key": "meanrev-v1", "name": "Two-Stage LLM Mean-Reversion (Arena v1)", "rules": {"max_positions": 10, "max_buys_per_run": 2, "avoid_overtrading": true, "max_sells_per_run": 2, "max_gross_leverage": 3.0, "fixed_position_size": 3000.0, "universe_symbols_eu": [], "universe_symbols_us": []}}, "portfolio_constraints": {"initial_equity": 10000.0, "max_positions": 10, "fixed_position_size": 3000.0, "max_gross_leverage": 3.0, "overtrading_rules": ["Max 2 SELL actions per run unless risk event forces more", "Max 2 BUY actions per run", "If no clear improvement vs current holdings, output HOLD for everything"]}, "current_portfolio": [{"symbol": "ADBE_CFD.US", "qty": 12.025494047380446, "avg_price": 249.47, "last_price": 244.46, "unrealized_pnl": -60.247725177375926, "opened_at": "2026-03-14T18:06:47.909233+00:00"}, {"symbol": "AMH_CFD.US", "qty": 0.0, "avg_price": 29.674999999999997, "last_price": 28.435000000000002, "unrealized_pnl": 0.0, "opened_at": "2026-02-20T17:33:34.647633+00:00"}, {"symbol": "ARCAD_CFD.NL", "qty": 0.0, "avg_price": 28.6, "last_price": 30.0, "unrealized_pnl": 146.8531468531467, "opened_at": "2026-02-23T10:32:09.961595+00:00"}, {"symbol": "AUTO_CFD.UK", "qty": 6.2137531068765535, "avg_price": 482.8, "last_price": 482.8, "unrealized_pnl": 0.0, "opened_at": "2026-04-03T10:08:21.824313+00:00"}, {"symbol": "BYIT_CFD.UK", "qty": 0.0, "avg_price": 292.6, "last_price": 292.6, "unrealized_pnl": 0.0, "opened_at": "2026-02-16T09:30:55.514112+00:00"}, {"symbol": "CABO_CFD.US", "qty": 0.0, "avg_price": 94.325, "last_price": 108.6, "unrealized_pnl": 0.0, "opened_at": "2026-02-27T18:23:55.960577+00:00"}, {"symbol": "CBG_CFD.UK", "qty": 0.0, "avg_price": 342.92, "last_price": 342.92, "unrealized_pnl": 0.0, "opened_at": "2026-03-20T10:26:40.341409+00:00"}, {"symbol": "CLX_CFD.US", "qty": 29.714738510301107, "avg_price": 100.96000000000001, "last_price": 105.02000000000001, "unrealized_pnl": 120.64183835182256, "opened_at": "2026-04-03T18:06:55.972569+00:00"}, {"symbol": "COTY_CFD.US", "qty": 1496.2593516209477, "avg_price": 2.005, "last_price": 2.185, "unrealized_pnl": 269.3266832917708, "opened_at": "2026-03-29T18:14:52.152268+00:00"}, {"symbol": "CRWD_CFD.US", "qty": 0.0, "avg_price": 350.45000000000005, "last_price": 382.96500000000003, "unrealized_pnl": 0.0, "opened_at": "2026-02-23T18:14:12.978497+00:00"}, {"symbol": "CSGP_CFD.US", "qty": 0.0, "avg_price": 47.235, "last_price": 40.870000000000005, "unrealized_pnl": 0.0, "opened_at": "2026-03-03T18:03:34.247734+00:00"}, {"symbol": "DSY_CFD.FR", "qty": 0.0, "avg_price": 17.881, "last_price": 17.45, "unrealized_pnl": 0.0, "opened_at": "2026-02-16T09:30:55.514112+00:00"}, {"symbol": "EEFT_CFD.US", "qty": 0.0, "avg_price": 63.91, "last_price": 63.91, "unrealized_pnl": 0.0, "opened_at": "2026-04-03T18:06:55.972569+00:00"}, {"symbol": "ETSY_CFD.US", "qty": 0.0, "avg_price": 44.13, "last_price": 50.769999999999996, "unrealized_pnl": 0.0, "opened_at": "2026-02-19T00:47:27.070066+00:00"}, {"symbol": "EZJ_CFD.UK", "qty": 0.0, "avg_price": 437.5, "last_price": 348.5, "unrealized_pnl": 0.0, "opened_at": "2026-03-03T10:20:03.276878+00:00"}, {"symbol": "FBIN_CFD.US", "qty": 0.0, "avg_price": 50.974999999999994, "last_price": 54.185, "unrealized_pnl": 0.0, "opened_at": "2026-02-16T17:30:52.485845+00:00"}, {"symbol": "FICO_CFD.US", "qty": 2.6609662855571625, "avg_price": 1127.4099999999999, "last_price": 1093.83, "unrealized_pnl": -89.35524786900932, "opened_at": "2026-03-14T18:06:47.909233+00:00"}, {"symbol": "FLO_CFD.US", "qty": 0.0, "avg_price": 9.875, "last_price": 9.885000000000002, "unrealized_pnl": 0.0, "opened_at": "2026-02-19T00:47:27.070066+00:00"}, {"symbol": "FUTR_CFD.UK", "qty": 10.55594651653765, "avg_price": 284.2, "last_price": 297.6, "unrealized_pnl": 141.44968332160488, "opened_at": "2026-02-18T09:36:37.284518+00:00"}, {"symbol": "HIK_CFD.UK", "qty": 0.0, "avg_price": 1236.0, "last_price": 1236.0, "unrealized_pnl": 0.0, "opened_at": "2026-03-28T10:05:22.022266+00:00"}, {"symbol": "ITRK_CFD.UK", "qty": 0.0, "avg_price": 3620.0, "last_price": 3620.0, "unrealized_pnl": 0.0, "opened_at": "2026-03-28T10:05:22.022266+00:00"}, {"symbol": "IWG_CFD.UK", "qty": 16.216216216216218, "avg_price": 185.0, "last_price": 172.2, "unrealized_pnl": -207.56756756756778, "opened_at": "2026-03-17T10:04:29.123574+00:00"}, {"symbol": "MLCO_CFD.US", "qty": 0.0, "avg_price": 5.51, "last_price": 6.06, "unrealized_pnl": 0.0, "opened_at": "2026-02-16T17:30:52.485845+00:00"}, {"symbol": "OCDO_CFD.UK", "qty": 0.0, "avg_price": 204.3, "last_price": 204.3, "unrealized_pnl": 0.0, "opened_at": "2026-03-12T18:01:52.554929+00:00"}, {"symbol": "PAGE_CFD.UK", "qty": 22.57336343115124, "avg_price": 132.9, "last_price": 132.9, "unrealized_pnl": 0.0, "opened_at": "2026-03-05T10:27:11.178069+00:00"}, {"symbol": "PAYC_CFD.US", "qty": 0.0, "avg_price": 121.22, "last_price": 134.24, "unrealized_pnl": 322.2240554363969, "opened_at": "2026-02-19T17:33:27.020111+00:00"}, {"symbol": "PSN_CFD.UK", "qty": 2.4691358024691357, "avg_price": 1215.0, "last_price": 1087.73, "unrealized_pnl": -314.2469135802468, "opened_at": "2026-03-12T18:01:52.554929+00:00"}, {"symbol": "RMV_CFD.UK", "qty": 0.0, "avg_price": 424.3, "last_price": 424.3, "unrealized_pnl": 0.0, "opened_at": "2026-02-18T09:36:37.284518+00:00"}, {"symbol": "TMV_CFD.DE", "qty": 0.0, "avg_price": 4.781, "last_price": 4.467, "unrealized_pnl": 0.0, "opened_at": "2026-02-19T09:33:49.074031+00:00"}, {"symbol": "TRN_CFD.UK", "qty": 0.0, "avg_price": 184.5, "last_price": 204.2, "unrealized_pnl": 0.0, "opened_at": "2026-03-05T10:27:11.178069+00:00"}, {"symbol": "UKW_CFD.UK", "qty": 0.0, "avg_price": 92.35, "last_price": 92.35, "unrealized_pnl": 0.0, "opened_at": "2026-02-25T17:57:28.313088+00:00"}, {"symbol": "ULTA_CFD.US", "qty": 5.605381165919282, "avg_price": 535.2, "last_price": 542.54, "unrealized_pnl": 41.14349775784707, "opened_at": "2026-03-15T18:15:23.812047+00:00"}, {"symbol": "UTG_CFD.UK", "qty": 0.0, "avg_price": 461.2, "last_price": 461.2, "unrealized_pnl": 0.0, "opened_at": "2026-03-30T10:23:56.039732+00:00"}, {"symbol": "WPP_CFD.UK", "qty": 0.0, "avg_price": 232.09999999999997, "last_price": 232.0, "unrealized_pnl": 0.0, "opened_at": "2026-02-28T10:51:05.818250+00:00"}, {"symbol": "ZS_CFD.US", "qty": 0.0, "avg_price": 159.76, "last_price": 138.82, "unrealized_pnl": 0.0, "opened_at": "2026-02-21T17:32:49.140800+00:00"}], "candidates": [{"symbol": "ICG_CFD.UK", "mean_reversion_score": 82, "selection_reason": "Sharp pullback (-15.2% 1D) with price below MA200 (-16.2%) and MA50 (-12.3%); volatility comparatively lower (73%) vs other large movers"}, {"symbol": "UTG_CFD.UK", "mean_reversion_score": 75, "selection_reason": "Oversold vs longer trend (MA200 -32.1%, MA50 -13.5%) with a notable down day (-8.3% 1D); setup favors short-term rebound toward MA50"}, {"symbol": "VCT_CFD.UK", "mean_reversion_score": 68, "selection_reason": "Down move (-9.3% 1D) while trading below MA200 (-11.3%) and slightly below MA50 (-2.9%); candidate for partial snapback"}, {"symbol": "LTA_CFD.FR", "mean_reversion_score": 65, "selection_reason": "Pullback (-4.9% 1D) with price below both MA200 (-14.0%) and MA50 (-12.9%); volatility moderate (84.8%) for mean-reversion horizon"}, {"symbol": "EXPN_CFD.UK", "mean_reversion_score": 62, "selection_reason": "Trading well below MA200 (-23.7%) with a mild down day (-2.7% 1D); potential for reversion toward MA50 (currently -3.8%) over 2–10 days"}], "output_schema": {"actions": {"sell": [{"symbol": "string", "reason": "string"}], "hold": [{"symbol": "string", "reason": "string"}], "buy": [{"symbol": "string", "position_size": "number (currency amount)", "reason": "string"}]}, "portfolio_rationale": "string"}}Output JSON
{
"actions": {
"buy": [
{
"reason": "Highest mean_reversion_score (82): sharp pullback (-15.2% 1D) with price below MA200 (-16.2%) and MA50 (-12.3%); candidate for short-term snapback.",
"symbol": "ICG_CFD.UK",
"position_size": 3000
},
{
"reason": "Mean_reversion_score (75): oversold vs longer trend (MA200 -32.1%, MA50 -13.5%) after notable down day (-8.3% 1D); setup favors rebound toward MA50.",
"symbol": "UTG_CFD.UK",
"position_size": 3000
}
],
"hold": [
{
"reason": "Modest unrealized loss (-60.25); no higher-conviction improvement signal provided to justify further churn beyond the two planned rotations.",
"symbol": "ADBE_CFD.US"
},
{
"reason": "Flat PnL; keep exposure to avoid unnecessary turnover.",
"symbol": "AUTO_CFD.UK"
},
{
"reason": "Positive unrealized PnL (+120.64); keep as it is not a drag on the mean-reversion basket.",
"symbol": "CLX_CFD.US"
},
{
"reason": "Positive unrealized PnL (+269.33); maintain position.",
"symbol": "COTY_CFD.US"
},
{
"reason": "Moderate unrealized loss (-89.36); prefer holding rather than adding extra sells beyond the allowed rotation.",
"symbol": "FICO_CFD.US"
},
{
"reason": "Positive unrealized PnL (+141.45); maintain position.",
"symbol": "FUTR_CFD.UK"
},
{
"reason": "Flat PnL; maintain to avoid overtrading.",
"symbol": "PAGE_CFD.UK"
},
{
"reason": "Slight positive unrealized PnL (+41.14); maintain position.",
"symbol": "ULTA_CFD.US"
}
],
"sell": [
{
"reason": "Largest current unrealized loss among active positions (-314.25) with no additional edge signals provided; rotate capital into higher mean-reversion-score candidates.",
"symbol": "PSN_CFD.UK"
},
{
"reason": "Meaningful unrealized loss (-207.57) and portfolio already at max positions/leverage; rotate into higher-scoring mean-reversion setup(s).",
"symbol": "IWG_CFD.UK"
}
]
},
"portfolio_rationale": "Portfolio is already at the maximum 10 active positions and at the gross-leverage limit implied by the fixed 3,000 position size. To respect the no-churn constraint while improving expected mean-reversion edge, execute a limited two-for-two rotation: exit the two weakest current contributors by unrealized PnL (PSN, IWG) and replace them with the two highest-scoring oversold candidates (ICG, UTG). All other positions are held to avoid overtrading."
}Selection logs
#1038 • stage1 • 2026-04-07T12:08:11.123087+00:00
{
"selected_stocks": [
{
"symbol": "ICG_CFD.UK",
"selection_reason": "Sharp pullback (-15.2% 1D) with price below MA200 (-16.2%) and MA50 (-12.3%); volatility comparatively lower (73%) vs other large movers",
"mean_reversion_score": 82
},
{
"symbol": "UTG_CFD.UK",
"selection_reason": "Oversold vs longer trend (MA200 -32.1%, MA50 -13.5%) with a notable down day (-8.3% 1D); setup favors short-term rebound toward MA50",
"mean_reversion_score": 75
},
{
"symbol": "VCT_CFD.UK",
"selection_reason": "Down move (-9.3% 1D) while trading below MA200 (-11.3%) and slightly below MA50 (-2.9%); candidate for partial snapback",
"mean_reversion_score": 68
},
{
"symbol": "LTA_CFD.FR",
"selection_reason": "Pullback (-4.9% 1D) with price below both MA200 (-14.0%) and MA50 (-12.9%); volatility moderate (84.8%) for mean-reversion horizon",
"mean_reversion_score": 65
},
{
"symbol": "EXPN_CFD.UK",
"selection_reason": "Trading well below MA200 (-23.7%) with a mild down day (-2.7% 1D); potential for reversion toward MA50 (currently -3.8%) over 2–10 days",
"mean_reversion_score": 62
}
],
"rejected_common_reasons": [
"Non-EU listings present in the input universe for an EU scan (e.g., *_CFD.US) excluded",
"Extreme 1-day gaps (e.g., >~20–30%) increase likelihood of binary/news-driven move; avoided when possible",
"Volatility/technical metrics appear anomalous (e.g., extremely large 20D volatility values), suggesting potential data-quality issues",
"Strong overbought conditions (large positive distance from MA50/MA200 after big up day) less suitable for long mean-reversion candidates in this pass",
"Earnings/news timing and sentiment are unknown (null), so high-event-risk names are deprioritized when technicals look abrupt"
]
}