Simons reached for a phone to call Ashvin Chhabra, a Wall Street veteran hired to run Euclidean Capital, a firm managing the personal money of Simons and his family. Simons told Chhabra he was concerned about the market’s outlook. It seemed like a good idea to place some negative bets against stocks, moves that would serve as protection in case the sell-off got even worse. Simons asked Chhabra’s opinion about what they should do.
