是評估日交易者交易係統和執行力的日子。仔細複盤一下，很多股和大盤走的很有章法，一點都不淩亂。
Contracts tied to nearly $7 trillion in stocks, ETFs and indexes were set to expire during the latest “triple witching” options-expiration event — potentially the largest sum on record, according to data from SpotGamma.
