(Bloomberg) — Traders struggling to keep up with gyrations in U.S. stocks just got jolted by a surge of trading volume.Transactions in stocks spiked amid a quarterly event known as quadruple witching, when options and futures on indexes and equities expire. During the first 15 minutes of trading, volume on the S&P 500 was about 70% higher than the average for that time of day over the past 30 sessions.Quadruple witching usually coincides with a rebalancing of major indexes such as the S&P 500 and can spark some of the busiest trading days of the year. While the global market …read more
Source:: Yahoo Finance
