Stocks are heading into a seasonally weak period, particularly following September options expiration, said Jason Goepfert, president of Sundial Capital Research. Friday marks what is known as “quadruple witching,” which is the simultaneous expiration of stock-index futures, stock-index options, stock options and single-stock futures. Goepfert said over the last 25 years, the S&P 500 has declined in the week following September options expiration 21 times, with a median loss of 1.3%. S&P 500 futures were down 1% ahead of Friday’s open.
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From:: Stock Market News