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Press Release

Former Associate Dean Of MIT Sloan School And His Harvard MBA Son Agree To Plead Guilty In Hedge Fund Scam

For Immediate Release
U.S. Attorney's Office, District of Massachusetts
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BOSTON – Two Boston-area hedge fund managers were charged today with conspiracy to commit securities fraud, wire fraud and obstruction of justice.

Gabriel Bitran, 69, of Newton, a former professor and associate dean of the Massachusetts Institute of Technology ("MIT") Sloan School of Business, and his son Marco Bitran, 39, of Brookline, a Harvard Business School graduate and money manager, were charged with conspiracy to commit securities fraud, wire fraud and obstruction of justice in connection with their hedge fund businesses, GMB Capital Management and GMB Capital Partners. Both Gabriel and Marco Bitran have agreed to plead guilty to the charge.

It is alleged that from 2005 through 2011, Gabriel and Marco Bitran solicited and maintained investors in their hedge fund and investment advisory businesses with false claims that, for eight or more years, they had managed friends and family funds, delivering average annual returns between 16 and 23%, with no down years. The Bitrans falsely told investors that the money in GMB hedge funds would be invested according to a complex mathematical trading model developed by Gabriel Bitran and based upon his MIT research on optimal pricing theory. The Bitrans also routinely concealed from investors that certain of their hedge funds were simply “funds of funds,” that is, hedge funds in which values of investments are determined by the value of investments in other independently managed hedge funds, some of which were themselves broad-based funds of funds.

By means of their fraudulent representations, the Bitrans induced investors to entrust over $500 million to their businesses. From this money, the Bitrans paid themselves millions of dollars in management fees for managing the funds in which they had fraudulently induced people to invest.

In the fall of 2008, several of the Bitrans’ hedge funds had disastrous losses, resulting in investors losing 50–75% of their principal in many instances. Nonetheless, in the fall of 2008, as their funds were experiencing these losses, Gabriel and Marco Bitran redeemed approximately $12 million of their own money from these hedge funds, while deferring other investors’ requests for redemption. The Bitrans thereby extracted much of the value of their own investments while leaving other investors to suffer more losses as the funds’ values declined precipitously.

In January 2009, while investigating potential victims of the Madoff fraud, the United States Securities and Exchange Commission (“SEC”) examiners learned of the Bitrans’ performance claims and asked for supporting documentation. In response, the Bitrans allegedly made false statements to the SEC examiners and provided fabricated records purporting to support their claimed actual trading performance.

As they did so, Gabriel and Marco Bitran acknowledged to each other that they had made false statements to investors and owed them restitution. In July 2009, Gabriel Bitran emailed Marco Bitran and discussed the fact that they had misled investors:

“We have mislead [sic] a lot of people with a range of statements that were incorrect simply to increase our income. . . . A person with the experience and knowledge of the financial sector and a veteran professor of MIT should not have engaged in this type of behavior. . . . I certainly do not blame you for everything that happened; we both share responsibility. . . . With [several named individuals] and probably a few others . . . we told them a story that was not true! . . . In my view you are discarding their anger as bad losers. This is not the whole story. They are not idiots, they know that they were mislead [sic]. The penalty for this type of action is Full [sic] restitution, which obviously we cannot afford.”

Similarly, in a September 1, 2009 email, Marco Bitran acknowledged to his father that he had not acted honestly. He stated:

“We are certainly sharing equally in this dad. . . . Lots of our problems were caused by my good intentions but very poor actions when it came to true honesty.”

Still, from early 2009 through 2010, the Bitrans took steps to shield their assets by transferring them out of GMB businesses and into entities with less obvious affiliations to Gabriel and Marco Bitran. To effect some of these transfers, they used the identity of a family member without that person’s knowledge, obtaining falsely notarized signatures in that person’s name, to shield millions of dollars that they had preferentially transferred out of the GMB hedge funds.

In total, the Bitrans lost more than $140 million of GMB investors’ principal.

If the plea agreements are accepted by the Court, the Bitrans will be sentenced to no more than five years in jail but no less than two years, as well as a period of up to three years of supervised release and more than $10 million in forfeiture.

If you believe that you are a victim or have any information regarding this case you may contact us at

United States Attorney Carmen M. Ortiz; Vincent B. Lisi, Special Agent in Charge of the Federal Bureau of Investigation, Boston Field Division; and William P. Offord, Special Agent in Charge of the Internal Revenue Service’s Criminal Investigation in Boston, made the announcement today. The United States Attorney’s Office received valuable assistance from the Securities & Exchange Commission in the course of investigating this case.

The case is being prosecuted by Sara Miron Bloom of Ortiz’s Economic Crimes Unit, Brian Pérez-Daple of the Major Crimes Unit and Mary Murrane, Chief of the Asset Forfeiture Unit.

The details contained in the Information are allegations. The defendants are presumed innocent unless and until proven guilty beyond a reasonable doubt in a court of law.

Updated December 15, 2014