A particularly volatile streak in the technology sector and setbacks in other growth stocks are creating the least hospitable market conditions for equity-focused hedge funds in at least a year and a half, say market participants, creating sizable losses in a matter of days.
Since the beginning of April, large hedge funds such as Viking Global Investors, Maverick Capital and Lone Pine Capital have stumbled likely in part due to losses on their tech positions, people familiar with the matter said. Overall, the average stock-focused fund fell 1.23 percent in the first week of April, according to report from Bank of America Merrill Lynch.
"The past two weeks for hedge funds have been diabolical," said one stock-fund manager who has been struck by the sharp intraday swings in both the Nasdaq Composite Index and the iShares Russell 2000 small-stock index, which have fallen by a respective 2.6 percent and 3.2 percent in April so far. Monday, April 7, on which the Nasdaq's gyrations were especially pointed, he added, "was one of the worst days for hedge funds since 2008."
Read MoreMarch tech lossesburn hedge funds