Markets, Robinhood, Prediction Markets, Bernstein, News Wall Street research firm Bernstein said the move — which Robinhood made in conjunction with market-making giant SIG — raises the stakes for competitors like Polymarket and Kalshi. Wall Street research firm Bernstein said the move — which Robinhood made in conjunction with market-making giant SIG — raises the stakes for competitors like Polymarket and Kalshi. CoinDesk: Bitcoin, Ethereum, Crypto News and Price Data Read More