Analysis: Today, options with a notional value of $5.8 trillion will expire in the U.S. stock market, which may indicate stock price fluctuations.

Mars Financial News, on June 20, Citi estimates that $5.8 trillion of notional stock open interest will expire on Friday, including $4.2 trillion in index options, $708 billion in U.S. ETF options and $819 billion in individual stock options. The event is likely to increase equity volatility beyond the relatively modest moves of recent weeks. Each quarter, a batch of different exchange-traded derivatives contracts expire on the same day, sometimes referred to by market watchers as the "Three Witch Day" events. Experts do not expect the event itself to add additional volatility on Friday, but may open the way for more sudden volatility in the stock market next week. (Golden Ten)