Earlier this year, Goldman Sachs booked a roughly $200m gain in one day, partly on bets that a long-dormant gauge of volatility would surge, ending a protracted period of placidity on Wall Street, MarketWatchreports.

The prominent investment bank’s trading desk centered on derivative flows produced the big daily return as a so-called market maker rather than buying the assets for its own account, CNBC reported on Wednesday. The bets didn’t only include wagers on the Cboe Volatility Index or VIX, but also trades on other derivative products.