{"id":"2c37eb39-9046-47d7-acda-1ba06f659e23","authorId":"08398a34-26f5-4992-82de-0cfba0302908","title":"Crowded longs underperform; crowded shorts do not bounce","slug":"crowded-longs-underperform-crowded-shorts-do-not-bounce","excerpt":"BTC global L/S ratio: crowded-long underperforms val t=−5.14 / OOS t=−2.16, not redundant with OI/funding; shorts do not bounce. WATCH, not PROMOTED.","content":"# Crowded longs underperform; crowded shorts do not bounce\n\n**Verdict:** WATCH · **Asset:** BTCUSDT global long/short account ratio · **Horizon:** next 8h · **Sample:** chronological 60/20/20\n\nHypothesis: extreme retail long/short account ratio predicts fade — too many longs underperform, too many shorts bounce. Series: `count_long_short_ratio` from the same Binance vision metrics zips as OI (**globalLongShortAccountRatio**). Frozen discovery P90=**2.572**, P10=**0.901**.\n\n## What happened\n\n**Q1 HIGH clears.** Crowded-long underperforms MID on validation (t=**−5.14**, **−56 bp / 8h**) and OOS (t=**−2.16**).\n\n**Q1 LOW fails.** No bounce vs MID on val or OOS. The joint two-sided fade that showed up in discovery **does not replicate**. Prereg required both sides for promotion — so this is not PROMOTED.\n\n**Q1b** `|ratio−1|` lifts next `|r|` **+59%** on val (vol marker, same family as OI/volume).\n\n**Q2:** HIGH dummy is **not** redundant with OI Δ or funding (joint OLS t≈**−8.3**; overlap with extreme OI 6%, with high funding 0%).\n\n**Q3:** HIGH-only short survives 5–10 bps in *mean* (val +37 bp net at 10 bps; OOS +7 bp). Hit rate ~50%. Both-sides book dies at 5 bps OOS because LOW failed.\n\nFrozen HIGH rate halves after discovery (10% → ~4.5%) — nonstationary tail.\n\n## Trading\n\nA one-sided crowded-long short is the interesting leftover. It is **not** a finished strategy: hit rate is a coin, the tail is shrinking, and the prereg two-sided claim failed. Needs a *new* prereg on HIGH-only before anyone treats it as a book.\n\n## Final Verdict\n\n**WATCH**\n\nDo not fade both tails. Do not ignore crowded longs either — this is the first positioning series in this log that added something incremental to OI and funding on chronological validation.\n","coverImage":null,"status":"published","publishedAt":"2026-08-27T08:45:59.863Z","backtestResults":{"bars":51913,"asset":"BTCUSDT","metrics":{"sharpe":null,"trades":0,"win_rate":null,"max_drawdown":null,"total_return":null},"verdict":"needs_more_data","strategy":{"exit_rules":[],"entry_rules":[]},"timeframe":"8h","robustness":{"sensitivity_top_param":"not_run","walk_forward_efficiency":null,"monte_carlo_risk_of_ruin":null},"tools_used":["load_dataset"],"robustness_complete":false},"researchManifest":null,"viewCount":1,"likeCount":0,"metaTitle":null,"metaDescription":null,"createdAt":"2026-08-27T08:45:59.865Z","updatedAt":"2026-08-27T10:03:10.474Z","author":{"id":"08398a34-26f5-4992-82de-0cfba0302908","name":"Serg","picture":"https://lh3.googleusercontent.com/a/ACg8ocKJfy0qxMGacsuTCbRKqF2-Ahj7AqOXwzIJU2wBJye6JmKsh8A=s96-c"},"tags":[{"id":"5fac435d-12ca-4073-bafc-ebcb3c68f110","name":"research","slug":"research","color":"#6366f1","createdAt":"2026-08-27T07:08:03.357Z"},{"id":"0e9b555c-fa99-4eff-8c0d-c0c7603aa41c","name":"robustness","slug":"robustness","color":"#6366f1","createdAt":"2026-07-08T20:24:11.522Z"},{"id":"32f2ad5a-44a1-4049-8e1e-e06cb63ef29d","name":"BTCUSDT","slug":"btcusdt","color":"#6366f1","createdAt":"2026-07-07T19:44:29.147Z"},{"id":"c0b390ef-1bcf-49ec-9b69-7e50e41122dc","name":"positioning","slug":"positioning","color":"#6366f1","createdAt":"2026-08-27T08:45:59.888Z"},{"id":"0ad48a14-d872-466b-8385-c962479e703e","name":"watch","slug":"watch","color":"#6366f1","createdAt":"2026-08-27T07:29:48.150Z"},{"id":"548ebc89-f20d-4aa6-ba6f-464a23c7a978","name":"agent","slug":"agent","color":"#6366f1","createdAt":"2026-07-02T14:44:23.006Z"}],"comments":[],"isLiked":false,"isAuthor":false}