Madoff, who ran Bernard L Madoff Investment Securities LLC, has been arrested and accused of running a fraudulent fund using a so-called Ponzi scheme whereby older investors are paid off with assets gathered from new investors. The business may have lost as much as $50 billion from various investors.
Merkin, who ran Ascot Partners LP through his Gabriel Capital Group, made the revelation last Thursday, the day Madoff was arrested.
"I am shocked, as I know you are, by this fraud. As one of the largest investors in our fund, I have also suffered major losses from this catastrophe," Merking wrote in a letter to Investors.
Merkin and Madoff had both served on Yeshiva University's board of trustees.