20/09/2021
A quarterly event known as “quadruple witching” or “triple witching” refer to the the expiration for stock options, index options, stock futures and index futures which can cause high trading volume in equity market. The three major U.S. stock indexes are in the red for September. After seven straight months of gains for the S&P 500 and a near 20% rally to records this year.
The Dow Jones Industrial Average climbed back from intraday lows, but closed down Thursday ahead of a seasonally weak period of trading in September.