Polymarket trading data challenges insider-trading theory in Senate election bets
Questions over a Polymarket trader's profitable Senate wagers are drawing scrutiny as blockchain records point to a broader pattern of high-risk crypto trading activity. The review suggests some of the bets may not align cleanly with the timing of unpublished poll data, complicating claims that the profits stemmed from advance access to survey results.
Highlights
- Onchain and trading data review by The Block shows the trader had a history of large speculative positions and DeFi activity predating the election bets.
- Matched deposits and trades suggest two large wagers totaling $153,000 were placed about 10 minutes after a public poll release, weakening insider-trading claims.
- The trader maintained positions through Election Day and placed a Michigan bet while polling was still ongoing, further questioning reliance on unpublished poll data.
Onchain records and poll timing
The Block reported that its review of onchain and trading data indicates the trader tied to the disputed election wagers has a longer history of large speculative positions and decentralized finance activity than was outlined in the earlier account.That analysis found the user may have placed a $153,000 bet on the Nebraska Senate race on Kalshi after the relevant poll had already been published. It also said matched deposits and trades suggest two large wagers were made about 10 minutes after one of the polls in question became public, weakening the case that the positions necessarily depended on advance access to unpublished results.
The New York Times reported on Friday that Vanderbilt University researchers had flagged profitable bets on Polymarket and Kalshi placed before certain polls in the Nebraska and Michigan Senate races were released. Those polls favored the candidates backed by the trader, prompting questions about whether the account holder had prior knowledge of the survey findings.
The trader also kept the positions through Election Day rather than exiting after poll-driven market moves, and placed a Michigan bet while the Times/Siena polling was still underway. Those details add uncertainty to the theory that the gains were primarily driven by unpublished polling information.
Our earlier article on Republicans’ midterm advertising surge explained how the GOP sharply ramped up ad spending as polling tightened in a number of Senate and House races. We noted that the jump in outlays was spreading into contests once viewed as safe, reflecting growing concern about voter sentiment amid affordability pressures and high fuel costs.
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