Analysis: Coinbase's (COIN) Brian Armstrong Made Prediction Markets Look Dumb. Bill Ackman Made Them Look Real
A Coinbase CEO prank resolved one market with a single sentence. Ackman’s warning about “rigged odds” in a $22 million Polymarket election shows the opposite: it now takes institutional-scale money to move prices even 10%. source https://www.coindesk.com/markets/2025/10/31/analysis-coinbase-s-coin-brian-armstrong-made-prediction-markets-look-dumb-bill-ackman-made-them-look-real