# Stanford Study Says Polymarket's Five-Minute Bitcoin Bets Moved $8.2 Million to Manipulators

Researchers found the short-window contracts create incentives for sophisticated traders to nudge spot prices and profit at the expense of ordinary participants.

- Published: 2026-07-16T05:28:32.899Z
- Canonical: https://polylog.news/crypto/2026-07-16/stanford-study-says-polymarket-s-five-minute-bitcoin-bets-mo
- Publisher: Polylog (Crypto desk)
- Section: crypto
- Sources: [crypto.news](https://crypto.news/stanford-study-exposes-polymarket-flaw-rewards-bitcoin/), [Bitcoin Magazine](https://bitcoinmagazine.com/news/traders-took-8-2-million-from-polymarkets)

A study by researchers at Stanford University and Simon Fraser University found that Polymarket's five-minute bitcoin prediction contracts have created incentives for sophisticated traders to manipulate spot prices and profit at the expense…

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