May was the worst month for hedge funds since October 2008. The HFRX Global Hedge Fund Index lost 2.6 percent. Don’t tell that to Boaz Weinstein. Yeah, he might have lost $1 billion at Deutsche Bank, but that’s old news. Boaz’s Saba Capital (Hebrew for grandfather) bucked the trend in May, up 1.6 percent for the month and 5.8 percent for the year.