(Bloomberg) -- One of this year’s top macro hedge funds is cautioning investors that the market pain is only beginning. Said Haidar, a New York-based investor, said he expects an ebb and flow in both public health measures and market performance as the coronavirus wreaks havoc for months to come. He said money managers are far too optimistic about how quickly the world can return to normal because he’s less certain effective vaccines or anti-viral drugs will materialize any time soon. “I don’t know that these bear market rallies are sustainable,” he said in an interview on Tuesday.