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Day 3 wrap: binary D-vs-R thesis also dead at scale ($0.52/event max)
Live-only retest of the binary tier (--live-only flag on both
analyzers) confirmed the 22-hour persistence seen in backfill was
forward-fill artifact. Real bestAsk-based events flash for 1 snapshot
(15 min) and disappear. A few D/R races (WV/TN/SC Senate/Gov) showed
persistent low-edge floors of 2-5% across 14 hours of live data.
Generalized verify_book script (scripts/verify_group_book.py, takes
--group-id-prefix arg) and ran depth check on the most stable
candidate (SC Governor D/R, +2.55% sustained edge, $4,377 min_liq):
Marginal edge: +2.55%
50u basket: +$0.52 profit
200u basket: +$0.31 (breakeven approaching)
500u basket: -$21 (negative)
Republican side bestAsk=0.91 has depth of only 3.9 units ($3.5 of
fillable). Edge collapses on first non-trivial fill.
Both thesis branches now have definitive verdicts:
- explicit_other (James Bond): $3.78/event max
- binary D-vs-R (SC Gov sample): $0.52/event max
Both killed by the same structural fact: long-tail Polymarket books
hold $5-80 of depth at best ask. The "persistent edge" is real but
is the unfilled cost of nobody bothering to take $5 of order flow.
Action: live snapshot loop stopped (no point accumulating data when
both branches are dead). Existing 1.3GB local data kept as baseline.
Pivot direction TBD with WW via PR #9.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
| sub_tier | events | distinct groups | median persistence (min) | top peak edge |
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|---|---:|---:|---:|---:|
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|`dvr`| 7 | 71 | 15 | +0.1979 |
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|`yes_no`| 0 | 0 | — | — |
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|`pseudo`| 7 | 20 | 570 | +0.0704 |
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## 3. Top 15 `dvr` events (real D vs R races)
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| group | peak_edge | persistence (min) | min_liq | start | end |
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|---|---:|---:|---:|---|---|
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|`0x5f4893a285ad...` (Will the Democrats win the Wes vs ...) | +0.1979 | 792 | $86 | 2026-05-12T13:53:18 | 2026-05-13T03:05:04 |
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|`0xb17c29a2fb22...` (Will the Democrats win the Ten vs ...) | +0.1042 | 177 | $2,082 | 2026-05-12T13:53:18 | 2026-05-12T16:50:04 |
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|`0xa8574c0caacc...` (Will the Democrats win the Sou vs ...) | +0.0369 | 765 | $2,125 | 2026-05-12T14:20:04 | 2026-05-13T03:05:04 |
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|`0x50a317c8d911...` (Will the Democrats win the Okl vs ...) | +0.0355 | 15 | $187 | 2026-05-12T15:35:04 | 2026-05-12T15:50:03 |
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|`0x50a317c8d911...` (Will the Democrats win the Okl vs ...) | +0.0335 | 15 | $143 | 2026-05-12T16:20:04 | 2026-05-12T16:35:04 |
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|`0x50a317c8d911...` (Will the Democrats win the Okl vs ...) | +0.0310 | 0 | $1,205 | 2026-05-12T18:50:03 | 2026-05-12T18:50:03 |
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|`0x50a317c8d911...` (Will the Democrats win the Okl vs ...) | +0.0259 | 0 | $192 | 2026-05-12T18:05:03 | 2026-05-12T18:05:03 |
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## 4. Notes
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-`dvr` (D vs R) is the only sub-tier that is structurally exhaustive in US politics — third parties get < 1% of vote in modern Senate/Governor general elections.
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-`yes_no` heuristic is naive (negation-substring + similarity). Likely under-counts.
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-`pseudo` events are NOT tradeable as basket arb — the listed 2 members are a sample, not the whole universe.
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- Verdict on dvr depends on event count AND median persistence AND a depth check (NOT done yet — same trap as James Bond, where mid edge > bestAsk edge after slippage).
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