Onchain Analysis Complicates Insider-Trading Questions…
By Abdelaziz Fathi

AI summary of the source article
Blockchain analysis of Polymarket account dubdubdub2 has complicated insider-trading allegations concerning U.S. Senate election bets. While the trader earned over $257,000 around poll releases, wallet records revealed an extensive history of large speculative positions across decentralized finance and prediction markets.
Why it matters
Large positions placed shortly before information-sensitive events create surveillance challenges for prediction markets.
Key facts
- A trader earned over $257,000 on Polymarket bets on Nebraska and Michigan Senate races placed shortly before New York Times/Siena polls were published.
- Onchain analysis linked the positions to account dubdubdub2, which engaged in tens of millions of dollars in transfers and extensive DeFi activity.
- Data showed possible six-figure purchases on Kalshi occurred roughly 10 minutes after the Nebraska poll was made public.
Source excerpt · FinanceFeeds
Blockchain analysis has complicated allegations that a Polymarket trader used advance access to unpublished political polling to profit from U.S. Senate election markets, revealing a history of large speculative positions, substantial decentralized finance activity and possible bets placed after one of the polls became public. The scrutiny began after Vanderbilt University researchers identified u…