Despite the U.S. stock market’s turbulent moves last week, the healthcare sector remains a bright spot. While the S&P 500 has wiped out gains and dropped 2% in total return year-to-date, the healthcare segment has risen 5.7%.To find the next big bets of the healthcare and pharmaceutical sectors, Forbes has compile a list of top U.S. trades of the richest hedge fund billionaires for the quarter ending on June 30. See the full story here.