Netflix, Celgene and Delta among 10 worst S&P 500 stocks By: MarketWatch August 24, 2015 at 10:34 AM EDT The benchmark index plunges as much as 5.3%, writes Phil van Doorn. Read More >> Related Stocks: Boston Properties CVS Health Corp Celgene Corp Delta Air Lines Express Scripts Holding Hasbro Hca Holdings Inc McKesson Corp Netflix Textron