Hedge Funds Yen
Japan Gov't Intervention Costs Hedge Funds Trading Yen
Other funds that had made money betting on the yen also suffered, including big funds operated by London firms Aspect Capital Ltd. and Winton Capital Management, according to investors. Still, Winton's $5 billion Winton Futures Fund remains up nearly 8% this year, an investor said. Both companies declined to comment.
While the yen's ascent had sparked debate within Japan's government and the investment community over whether Tokyo might intervene, the timing and the size of Wednesday's moved surprised many investors.
Overall, investors held a near-record level of "long" positions on the yen as of Sept. 7, according to Kathy Lien, director of currency research at Global Forex Trading, citing data compiled by the Commodity Futures Trading Commission. They held a net 52,000 contracts on the yen, compared with a sizable bearish position on the yen as recently as May. source