Paulson's Credit Opportunities fund up 6.6 pct ytd to end-May -source

June 30 (Reuters) - Hedge fund manager John Paulson's credit opportunities and merger arbitrage funds were up 6.6 percent and 3.3 percent year-to-date through the end of May, respectively, easily surpassing their benchmarks, according to an investor in attendance at Paulson & Co's recent mid-year client event.