Arena run #946
meanrev-v1 • openai • openai/gpt-5.2-pro • EU • success
Run status
as_of: 2026-03-30T10:23:56.039732+00:00
started_at: 2026-03-30T12:47:11.154617+00:00
finished_at: 2026-03-30T12:49:41.060742+00:00
duration_ms: 149904
Inputs
{
"as_of": "2026-03-30T10:23:56.039732+00:00",
"dry_run": false,
"selected": [
{
"symbol": "UTG_CFD.UK",
"selection_reason": "Down -8.27% 1D with deep oversold vs MA200 (-32.13%) and MA50 (-13.55%); fits 2-10D rebound setup.",
"mean_reversion_score": 85
},
{
"symbol": "SKB_CFD.DE",
"selection_reason": "Down -7.21% 1D while far below MA200 (-32.94%) and MA50 (-12.28%); strong mean-reversion distance.",
"mean_reversion_score": 82
},
{
"symbol": "OSB_CFD.UK",
"selection_reason": "Large 1D selloff (-16.24%) with price below MA50 (-10.97%) and slightly below MA200 (-1.84%); potential snap-back.",
"mean_reversion_score": 78
},
{
"symbol": "KGF_CFD.UK",
"selection_reason": "Sharp 1D drop (-16.59%) and below MA50 (-8.10%); candidate for short-term bounce despite MA200 near flat (+1.77%).",
"mean_reversion_score": 74
},
{
"symbol": "MCG_CFD.UK",
"selection_reason": "Pullback (-4.25% 1D) with price still meaningfully below MA200 (-13.63%); milder MA50 deviation (+0.94%) suggests early mean-reversion entry.",
"mean_reversion_score": 62
}
],
"simulate_only": false,
"strict_replay": false,
"universe_symbols": [
"CRST_CFD.UK",
"MCG_CFD.UK",
"BOY_CFD.UK",
"LMP_CFD.UK",
"SPX_CFD.UK",
"PAGE_CFD.UK",
"FUTR_CFD.UK",
"ESNT_CFD.UK",
"SHC_CFD.UK",
"PAG_CFD.UK",
"SAFE_CFD.UK",
"RHIM_CFD.UK",
"UTG_CFD.UK",
"CBG_CFD.UK",
"RSW_CFD.UK",
"DLN_CFD.UK",
"EMG_CFD.UK",
"PZC_CFD.UK",
"DOM_CFD.UK",
"OCDO_CFD.UK",
"HWDN_CFD.UK",
"LRE_CFD.UK",
"STJ_CFD.UK",
"ABDN_CFD.UK",
"LIO_CFD.UK",
"BBY_CFD.UK",
"CPG_CFD.UK",
"TRST_CFD.UK",
"KGF_CFD.UK",
"PSN_CFD.UK",
"PNL_CFD.NL",
"BIG_CFD.FR",
"GROW_CFD.UK",
"GRG_CFD.UK",
"SRP_CFD.UK",
"BYIT_CFD.UK",
"OSB_CFD.UK",
"WKP_CFD.UK",
"HIK_CFD.UK",
"KOF_CFD.FR",
"ATG_CFD.UK",
"ROR_CFD.UK",
"COTY_CFD.US",
"UKW_CFD.UK",
"HMSO_CFD.UK",
"ALLFG_CFD.NL",
"NVAX_CFD.US",
"SKB_CFD.DE",
"SGRO_CFD.UK"
]
}Outputs
{
"actions": {
"buy": [
{
"reason": "Highest mean_reversion_score (85) among candidates; described as a sharp 1D drop with deep oversold vs MA200/MA50, fitting the strategy’s short-horizon rebound setup. Portfolio has capacity (currently 9 positions; max 10) and gross exposure remains within the max leverage constraint after adding one fixed-size position.",
"symbol": "UTG_CFD.UK",
"position_size": 3000
}
],
"hold": [
{
"reason": "Maintain existing mean-reversion position; no new signal/news data provided to justify a sell, and avoiding overtrading.",
"symbol": "ADBE_CFD.US"
},
{
"reason": "Recently opened and currently flat; no incremental information to justify changing exposure.",
"symbol": "COTY_CFD.US"
},
{
"reason": "Hold to allow the mean-reversion setup time to play out; no updated catalyst/risk flag provided.",
"symbol": "CSGP_CFD.US"
},
{
"reason": "Hold; position remains within risk limits and no new data provided to justify exit.",
"symbol": "EZJ_CFD.UK"
},
{
"reason": "Hold; avoid churning without an explicit adverse event or improved alternative requiring capital rotation.",
"symbol": "FICO_CFD.US"
},
{
"reason": "Hold; no updated information provided and portfolio leverage/position count are within constraints.",
"symbol": "IWG_CFD.UK"
},
{
"reason": "Hold; no new information provided to warrant selling, consistent with avoid-overtrading rule.",
"symbol": "PSN_CFD.UK"
},
{
"reason": "Hold; maintain diversification and avoid overtrading absent a clear replacement opportunity requiring a sell.",
"symbol": "ULTA_CFD.US"
},
{
"reason": "Hold; no updated risk/catalyst data provided and position sizing remains within limits.",
"symbol": "ZS_CFD.US"
}
],
"sell": []
},
"portfolio_rationale": "Portfolio currently has 9 active positions, leaving room for one additional fixed-size entry while staying below the max positions (10) and max gross leverage (3.0x on 10,000 equity). With no new risk events or updated signals for existing holdings, the plan avoids overtrading by holding all current positions and adding only the single strongest mean-reversion candidate (UTG_CFD.UK) per the provided scoring/selection rationale."
}Prompts & responses
#1847 • openrouter • openai/gpt-5.2-pro • 2026-03-30T12:47:11.208305+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": "MCG_CFD.UK", "name": "MOBICO GROUP PLC", "sector": "", "last_price": 23.88, "change_1d_pct": -4.250200481154776, "distance_from_ma200_pct": -13.633157923289751, "distance_from_ma50_pct": 0.9358119246278163, "volatility_20d_pct": 236.12122528317374, "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": "LMP_CFD.UK", "name": "LONDONMETRIC PROPERTY PLC", "sector": "", "last_price": 214.0, "change_1d_pct": 11.57455683003128, "distance_from_ma200_pct": 12.507879494597773, "distance_from_ma50_pct": 10.77384329331672, "volatility_20d_pct": 54.89150861607771, "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": "SPX_CFD.UK", "name": "SPIRAX-SARCO ENGINEERING PLC", "sector": "", "last_price": 7608.71, "change_1d_pct": 10.91413994169097, "distance_from_ma200_pct": 15.905097055024719, "distance_from_ma50_pct": 8.459177525660632, "volatility_20d_pct": 84.71063298478786, "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": "FUTR_CFD.UK", "name": "FUTURE PLC", "sector": "", "last_price": 419.8, "change_1d_pct": -21.238273921200744, "distance_from_ma200_pct": -37.8057811437588, "distance_from_ma50_pct": -23.777028015845957, "volatility_20d_pct": 154.26286041137905, "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": 108.4, "change_1d_pct": 4.230769230769238, "distance_from_ma200_pct": 7.40452119530135, "distance_from_ma50_pct": 9.771484932749797, "volatility_20d_pct": 98.9832071461764, "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": "RHIM_CFD.UK", "name": "RHI MAGNESITA NV", "sector": "", "last_price": 2550.0, "change_1d_pct": -6.764168190127973, "distance_from_ma200_pct": -2.35709026809392, "distance_from_ma50_pct": 0.9429816244979738, "volatility_20d_pct": 151.25590362229855, "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": "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": "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": "EMG_CFD.UK", "name": "MAN GROUP PLC/JERSEY", "sector": "", "last_price": 269.6, "change_1d_pct": 2.353834472285521, "distance_from_ma200_pct": 42.186331073171914, "distance_from_ma50_pct": 15.516783354614262, "volatility_20d_pct": 86.92367167139048, "market_cap_usd": null, 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"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": "LRE_CFD.UK", "name": "LANCASHIRE HOLDINGS LTD", "sector": "", "last_price": 611.0, "change_1d_pct": -7.424242424242422, "distance_from_ma200_pct": 0.4068944205071867, "distance_from_ma50_pct": -6.396619125545266, "volatility_20d_pct": 86.32350801127552, "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": "STJ_CFD.UK", "name": "ST JAMES'S PLACE PLC", "sector": "", "last_price": 1280.0, "change_1d_pct": -14.836992681304062, "distance_from_ma200_pct": 4.633703562254432, "distance_from_ma50_pct": -6.669417974449299, "volatility_20d_pct": 125.87476157380789, "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": 202.6, "change_1d_pct": -7.741347905282336, "distance_from_ma200_pct": 6.460345885775287, "distance_from_ma50_pct": -2.3285905331046353, "volatility_20d_pct": 82.55854119558269, "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": "LIO_CFD.UK", "name": "LIONTRUST ASSET MANAGEMENT", "sector": "", "last_price": 257.5, "change_1d_pct": -4.629629629629628, "distance_from_ma200_pct": -20.98457818422561, "distance_from_ma50_pct": -0.39493890244891583, "volatility_20d_pct": 5544.13069622931, "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": 722.5, "change_1d_pct": -1.0951403148528382, "distance_from_ma200_pct": null, "distance_from_ma50_pct": -1.628407265201648, "volatility_20d_pct": 2239.4661443465884, "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": "CPG_CFD.UK", "name": "COMPASS GROUP PLC", "sector": "", "last_price": 2287.0, "change_1d_pct": -0.823937554206422, "distance_from_ma200_pct": null, "distance_from_ma50_pct": 2.8011537977172374, "volatility_20d_pct": 2808.1897930853006, "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": "TRST_CFD.UK", "name": "TRUSTPILOT AS", "sector": "", "last_price": 193.5, "change_1d_pct": 44.080416976917334, "distance_from_ma200_pct": -9.566423578720663, "distance_from_ma50_pct": 7.968463165177786, "volatility_20d_pct": 306.1390586005606, "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": "KGF_CFD.UK", "name": "KINGFISHER PLC", "sector": "", "last_price": 298.6, "change_1d_pct": -16.592178770949715, "distance_from_ma200_pct": 1.7661505198389493, "distance_from_ma50_pct": -8.10124743477527, "volatility_20d_pct": 106.76236046208503, "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": "PSN_CFD.UK", "name": "PERSIMMON PLC", "sector": "", "last_price": 1125.0, "change_1d_pct": -18.181818181818176, "distance_from_ma200_pct": -10.441765693528215, "distance_from_ma50_pct": -17.60321899687448, "volatility_20d_pct": 125.39714948121237, "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": "PNL_CFD.NL", "name": "PostNL", "sector": "", "last_price": 1.072, "change_1d_pct": -4.541406945681203, "distance_from_ma200_pct": 4.171221728251107, "distance_from_ma50_pct": -6.07366908491922, "volatility_20d_pct": 61.366406422263864, "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": "BIG_CFD.FR", "name": "Bigben Interactive", "sector": "", "last_price": 0.277, "change_1d_pct": -5.782312925170052, "distance_from_ma200_pct": -73.73013163385305, "distance_from_ma50_pct": -55.795991318779514, "volatility_20d_pct": 291.9059308593785, "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": "GRG_CFD.UK", "name": "GREGGS PLC", "sector": "", "last_price": 1529.0, "change_1d_pct": -2.9206349206349236, "distance_from_ma200_pct": -8.939548634961259, "distance_from_ma50_pct": -6.2632574039152455, "volatility_20d_pct": 114.30891013276798, "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": "SRP_CFD.UK", "name": "SERCO GROUP PLC", "sector": "", "last_price": 300.0, "change_1d_pct": -0.3984063745019917, "distance_from_ma200_pct": 34.11120814305375, "distance_from_ma50_pct": 6.89280433272168, "volatility_20d_pct": 77.89780733903845, "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": "BYIT_CFD.UK", "name": "BYTES TECHNOLOGY GROUP PLC", "sector": "", "last_price": 316.4, "change_1d_pct": 1.9329896907216426, "distance_from_ma200_pct": null, "distance_from_ma50_pct": -3.036395062333752, "volatility_20d_pct": 3610.9502328075146, "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": "OSB_CFD.UK", "name": "OSB GROUP PLC", "sector": "", "last_price": 528.5, "change_1d_pct": -16.244057052297943, "distance_from_ma200_pct": -1.8378243844316744, "distance_from_ma50_pct": -10.974869814433564, "volatility_20d_pct": 90.32554714918702, "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": "HIK_CFD.UK", "name": "HIKMA PHARMACEUTICALS PLC", "sector": "", "last_price": 1267.0, "change_1d_pct": -19.55555555555556, "distance_from_ma200_pct": -28.881851790845626, "distance_from_ma50_pct": -15.711709832205766, "volatility_20d_pct": 155.5956600941246, "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": "KOF_CFD.FR", "name": "Kaufman & Broad", "sector": "", "last_price": 28.7, "change_1d_pct": -2.876480541455162, "distance_from_ma200_pct": -4.956737929795485, "distance_from_ma50_pct": -6.483831152158304, "volatility_20d_pct": 56.36298173666459, "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": 315.64, "change_1d_pct": -7.815420560747666, "distance_from_ma200_pct": -3.440121571713639, "distance_from_ma50_pct": -7.465605958975752, "volatility_20d_pct": 114.53961834922319, "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": "COTY_CFD.US", "name": "Coty Inc", "sector": "", "last_price": 2.05, "change_1d_pct": -3.7558685446009377, "distance_from_ma200_pct": -45.233292814875185, "distance_from_ma50_pct": -22.100623195014435, "volatility_20d_pct": 76.36828551252826, "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": "UKW_CFD.UK", "name": "GREENCOAT UK WIND PLC", "sector": "", "last_price": 100.7, "change_1d_pct": 1.6658253407370038, "distance_from_ma200_pct": -9.705655680854775, "distance_from_ma50_pct": -2.946868470357833, "volatility_20d_pct": 63.21786303082545, "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": "HMSO_CFD.UK", "name": "HAMMERSON PLC", "sector": "", "last_price": 355.4, "change_1d_pct": 14.129736673089276, "distance_from_ma200_pct": 22.516025502913806, "distance_from_ma50_pct": 10.006914897239172, "volatility_20d_pct": 87.54938293511039, "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": "ALLFG_CFD.NL", "name": "ALLFUNDS GROUP PLC", "sector": "", "last_price": 8.405, "change_1d_pct": -0.8844339622641639, "distance_from_ma200_pct": 30.92501914028758, "distance_from_ma50_pct": 5.137936469416782, "volatility_20d_pct": 204.89479947101123, "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": "NVAX_CFD.US", "name": "NOVAVAX INC", "sector": "", "last_price": 8.61, "change_1d_pct": -10.68464730290457, "distance_from_ma200_pct": 7.390753918016313, "distance_from_ma50_pct": -8.001025772534954, "volatility_20d_pct": 178.31142153329148, "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": "SKB_CFD.DE", "name": "Koenig & Bauer AG", "sector": "", "last_price": 7.98, "change_1d_pct": -7.20930232558139, "distance_from_ma200_pct": -32.93599169011385, "distance_from_ma50_pct": -12.28436573242555, "volatility_20d_pct": 98.22908386605988, "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": "SGRO_CFD.UK", "name": "SEGRO PLC", "sector": "", "last_price": 735.4, "change_1d_pct": -2.051145444858815, "distance_from_ma200_pct": 8.121221031738735, "distance_from_ma50_pct": 0.6415109419246168, "volatility_20d_pct": 82.62107653630062, "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": "UTG_CFD.UK",
"selection_reason": "Down -8.27% 1D with deep oversold vs MA200 (-32.13%) and MA50 (-13.55%); fits 2-10D rebound setup.",
"mean_reversion_score": 85
},
{
"symbol": "SKB_CFD.DE",
"selection_reason": "Down -7.21% 1D while far below MA200 (-32.94%) and MA50 (-12.28%); strong mean-reversion distance.",
"mean_reversion_score": 82
},
{
"symbol": "OSB_CFD.UK",
"selection_reason": "Large 1D selloff (-16.24%) with price below MA50 (-10.97%) and slightly below MA200 (-1.84%); potential snap-back.",
"mean_reversion_score": 78
},
{
"symbol": "KGF_CFD.UK",
"selection_reason": "Sharp 1D drop (-16.59%) and below MA50 (-8.10%); candidate for short-term bounce despite MA200 near flat (+1.77%).",
"mean_reversion_score": 74
},
{
"symbol": "MCG_CFD.UK",
"selection_reason": "Pullback (-4.25% 1D) with price still meaningfully below MA200 (-13.63%); milder MA50 deviation (+0.94%) suggests early mean-reversion entry.",
"mean_reversion_score": 62
}
],
"rejected_common_reasons": [
"Extreme 1-day moves (e.g., >20-30%) that look event-driven/binary; earnings/news timing unknown so excluded for risk control",
"Already extended to the upside vs MA50/MA200 (positive distance) which is not aligned with oversold mean-reversion longs",
"Data-quality anomalies / unrealistic volatility readings (very large volatility_20d_pct values or missing MA fields) reducing signal reliability",
"Very low-priced/potentially illiquid names with very high volatility (higher gap risk for 2-10 day holds)"
]
}#1848 • openrouter • openai/gpt-5.2-pro • 2026-03-30T12:48:46.595259+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": 235.0, "unrealized_pnl": -174.00889886559506, "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": "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": "COTY_CFD.US", "qty": 1496.2593516209477, "avg_price": 2.005, "last_price": 2.005, "unrealized_pnl": 0.0, "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": 63.51222610352493, "avg_price": 47.235, "last_price": 39.815, "unrealized_pnl": -471.26071768815507, "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": "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": 6.857142857142857, "avg_price": 437.5, "last_price": 347.2, "unrealized_pnl": -619.2, "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": 1014.37, "unrealized_pnl": -300.7956289193813, "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": 0.0, "avg_price": 414.2, "last_price": 414.2, "unrealized_pnl": 0.0, "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": 0.0, "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": 1089.0, "unrealized_pnl": -311.1111111111111, "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": 510.23, "unrealized_pnl": -139.96636771300464, "opened_at": "2026-03-15T18:15:23.812047+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": 18.778167250876315, "avg_price": 159.76, "last_price": 133.3, "unrealized_pnl": -496.8703054581869, "opened_at": "2026-02-21T17:32:49.140800+00:00"}], "candidates": [{"symbol": "UTG_CFD.UK", "mean_reversion_score": 85, "selection_reason": "Down -8.27% 1D with deep oversold vs MA200 (-32.13%) and MA50 (-13.55%); fits 2-10D rebound setup."}, {"symbol": "SKB_CFD.DE", "mean_reversion_score": 82, "selection_reason": "Down -7.21% 1D while far below MA200 (-32.94%) and MA50 (-12.28%); strong mean-reversion distance."}, {"symbol": "OSB_CFD.UK", "mean_reversion_score": 78, "selection_reason": "Large 1D selloff (-16.24%) with price below MA50 (-10.97%) and slightly below MA200 (-1.84%); potential snap-back."}, {"symbol": "KGF_CFD.UK", "mean_reversion_score": 74, "selection_reason": "Sharp 1D drop (-16.59%) and below MA50 (-8.10%); candidate for short-term bounce despite MA200 near flat (+1.77%)."}, {"symbol": "MCG_CFD.UK", "mean_reversion_score": 62, "selection_reason": "Pullback (-4.25% 1D) with price still meaningfully below MA200 (-13.63%); milder MA50 deviation (+0.94%) suggests early mean-reversion entry."}], "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 (85) among candidates; described as a sharp 1D drop with deep oversold vs MA200/MA50, fitting the strategy’s short-horizon rebound setup. Portfolio has capacity (currently 9 positions; max 10) and gross exposure remains within the max leverage constraint after adding one fixed-size position.",
"symbol": "UTG_CFD.UK",
"position_size": 3000
}
],
"hold": [
{
"reason": "Maintain existing mean-reversion position; no new signal/news data provided to justify a sell, and avoiding overtrading.",
"symbol": "ADBE_CFD.US"
},
{
"reason": "Recently opened and currently flat; no incremental information to justify changing exposure.",
"symbol": "COTY_CFD.US"
},
{
"reason": "Hold to allow the mean-reversion setup time to play out; no updated catalyst/risk flag provided.",
"symbol": "CSGP_CFD.US"
},
{
"reason": "Hold; position remains within risk limits and no new data provided to justify exit.",
"symbol": "EZJ_CFD.UK"
},
{
"reason": "Hold; avoid churning without an explicit adverse event or improved alternative requiring capital rotation.",
"symbol": "FICO_CFD.US"
},
{
"reason": "Hold; no updated information provided and portfolio leverage/position count are within constraints.",
"symbol": "IWG_CFD.UK"
},
{
"reason": "Hold; no new information provided to warrant selling, consistent with avoid-overtrading rule.",
"symbol": "PSN_CFD.UK"
},
{
"reason": "Hold; maintain diversification and avoid overtrading absent a clear replacement opportunity requiring a sell.",
"symbol": "ULTA_CFD.US"
},
{
"reason": "Hold; no updated risk/catalyst data provided and position sizing remains within limits.",
"symbol": "ZS_CFD.US"
}
],
"sell": []
},
"portfolio_rationale": "Portfolio currently has 9 active positions, leaving room for one additional fixed-size entry while staying below the max positions (10) and max gross leverage (3.0x on 10,000 equity). With no new risk events or updated signals for existing holdings, the plan avoids overtrading by holding all current positions and adding only the single strongest mean-reversion candidate (UTG_CFD.UK) per the provided scoring/selection rationale."
}Selection logs
#906 • stage1 • 2026-03-30T12:48:46.593045+00:00
{
"selected_stocks": [
{
"symbol": "UTG_CFD.UK",
"selection_reason": "Down -8.27% 1D with deep oversold vs MA200 (-32.13%) and MA50 (-13.55%); fits 2-10D rebound setup.",
"mean_reversion_score": 85
},
{
"symbol": "SKB_CFD.DE",
"selection_reason": "Down -7.21% 1D while far below MA200 (-32.94%) and MA50 (-12.28%); strong mean-reversion distance.",
"mean_reversion_score": 82
},
{
"symbol": "OSB_CFD.UK",
"selection_reason": "Large 1D selloff (-16.24%) with price below MA50 (-10.97%) and slightly below MA200 (-1.84%); potential snap-back.",
"mean_reversion_score": 78
},
{
"symbol": "KGF_CFD.UK",
"selection_reason": "Sharp 1D drop (-16.59%) and below MA50 (-8.10%); candidate for short-term bounce despite MA200 near flat (+1.77%).",
"mean_reversion_score": 74
},
{
"symbol": "MCG_CFD.UK",
"selection_reason": "Pullback (-4.25% 1D) with price still meaningfully below MA200 (-13.63%); milder MA50 deviation (+0.94%) suggests early mean-reversion entry.",
"mean_reversion_score": 62
}
],
"rejected_common_reasons": [
"Extreme 1-day moves (e.g., >20-30%) that look event-driven/binary; earnings/news timing unknown so excluded for risk control",
"Already extended to the upside vs MA50/MA200 (positive distance) which is not aligned with oversold mean-reversion longs",
"Data-quality anomalies / unrealistic volatility readings (very large volatility_20d_pct values or missing MA fields) reducing signal reliability",
"Very low-priced/potentially illiquid names with very high volatility (higher gap risk for 2-10 day holds)"
]
}