Empirical Evaluation of Deadline-Resolved Information Leakage on Documented Polymarket Insider Cases
Maksym Nechepurenko · 2026 · arXiv preprint
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We adapt classical market-microstructure theory — PIN, VPIN, Kyle's λ, order imbalance, and variance-ratio diagnostics — to the discrete-outcome, on-chain CLOB structure of decentralized prediction markets.
Market microstructure is the study of how prices are formed through the trading process — the mechanics beneath the efficient-market surface. On prediction markets, this process is uniquely transparent: every trade, every wallet, every order is on-chain and auditable.
This transparency creates both opportunity and responsibility. We can measure informed trading with a precision impossible in traditional markets. But the same techniques that detect informed flow can, if published carelessly, help bad actors evade detection. We publish methods at a level of abstraction that advances the field without providing a free evasion guide.
Maksym Nechepurenko · 2026 · arXiv preprint
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Maksym Nechepurenko · 2026 · Working Paper
arXiv · SSRN · DOI · Code · Data
Maksym Nechepurenko · 2026 · Working Paper
PDF · arXiv · SSRN · DOI · Code · Data
Maksym Nechepurenko · 2026 · Working Paper
PDF · SSRN · DOI · Code · Data
Maksym Nechepurenko · 2026 · Working Paper
PDF · arXiv · SSRN · DOI
Maksym Nechepurenko · 2026 · arXiv preprint
PDF · arXiv · SSRN · DOI · Code
Maksym Nechepurenko · 2026 · Working Paper
PDF · arXiv · SSRN · DOI
Maksym Nechepurenko · 2026 · Working Paper
arXiv · SSRN · DOI · Code · Data
Maksym Nechepurenko · 2026 · Working Paper
PDF · arXiv · SSRN · DOI · Code
A curated validation set mapping eight publicly documented episodes of suspected informed trading on Polymarket to concrete on-chain market identifiers. Cases span 2023–2026 and cover 24 individual markets across military and geopolitical actions, corporate proprietary disclosures, and regulatory decisions.
Fill-side behavioral clusters, feature tiers, and per-market microstructure signatures from 13.36M OrderFilled events on Polymarket CTFExchange (43,116 markets, 77,203 addresses, 2026-04-21 to 2026-04-27). k-means k=5 archetypes, 6 feature tiers, Spearman bilateral analysis with BH-FDR correction. Bundle 3 of the PMXT family; companion to Paper 4 of the Event-Linked Perpetuals research programme.
Per-market stylized-fact measurements (SF1–SF9) for 13,314 resolved Polymarket binary-event markets over 2026-04-21 to 2026-04-27. Empirical foundation for Paper 1 of the Event-Linked Perpetuals research programme.