They join a list of more powerful investors that have come forward, all worried about the extent of their losses. The roster of names include Philadelphia Eagles owner Norman Braman, New York Mets owner Fred Wilpon and J. Ezra Merkin, the chairman of GMAC Financial Services, among others.

Beyond U.S. hedge funds, more corporate names disclosed exposure to Madoff. Late Sunday, some of Europe's biggest banks acknowledged they, too, were exposed to Madoff's investment fund.
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