Cboe Global Markets Inc. fined a trading firm for trying to include improper options trades in an auction tied to its marquee product: the VIX volatility gauge. The Cboe Volatility Index, or VIX, tracks investor expectations for future turbulence in the stock market by using S&P 500 options prices. Last year, questions escalated over...

Source: Wall Street Journal February 01, 2019 21:00 UTC