A hostile stock-market environment could hurt new IPOs By: MarketWatch May 10, 2019 at 12:37 PM EDT The odds of losses are significantly higher from May to October. Read More >> Related Stocks: Nasdaq Composite S&P 500 ETF Vanguard SPDR S&P 500 ETF Trust Short S&P500 -1X ETF Uber Technologies Inc Ultrashort S&P500 -2X ETF VIX