hedge funds that make both bullish and bearish wagers on stocks are turning skeptical on tech megacaps just days before earnings from the likes of apple inc and facebook inc their exposure to the five biggest american companies slipped over the past month hitting the lowest level in more than two years according to goldman sachs group inc’s prime broker meanwhile options traders  who rushed in to bet on quick gains in 2020  are retreating total call open interest on that small group of us giants sank to a 14month low data compiled by bloomberg show