The stock market’s latest sell signal has happened only 5 other times since 1895 By: MarketWatch August 21, 2018 at 05:20 AM EDT Sound Advice Risk Indicator suggests stocks are overvalued relative to real estate, writes Mark Hulbert. Read More >> Related Stocks: Hersha Hospitality Trust Rlj Lodging Trust Ultrashort S&P500 -2X ETF