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SAC's Alleged Insider Trade Hid in Dark Pools

NEW YORK ( TheStreet) - U.S. Attorney Preet Bharara may have hooked his biggest insider trade, after unveiling new allegations against a SAC Capital Management trader that raises the prospect the worst is yet to come for the hedge fund and its founder Steven A. Cohen.

But as prosecutors untangle a web of fraud that's so far ensnarled scores of Wall Streeters and industry heavyweights like former McKinsey & Co. head and Goldman Sachs (GS - Get Report) director Rajat Gupta and Galleon Group founder Raj Rajaratnam, the implications of Bharara's newest allegations may extend far beyond SAC Capital and its highly watched head.

Details of a Tuesday charge laid out against a former SAC trader raises the prospect that the rise of algorithmic trading and so-called 'dark pools' are facilitating insider hedge fund trading. Were the U.S. Attorney's newest charge to be borne out, algorithmic and dark pool trading will be at the heart of the insider trading conspiracy.

It would also be an indication of the work left for the Securities and Exchange Commission to gain a grip over increasingly opaque stock trading venues, which have been considered at the heart of a May 2010 market meltdown and various subsequent 'flash crashes.'

The U.S. attorney's charge alleges that former SAC trader Mathew Martoma was able to make $276 million in profit and avoided losses on the shares of Elan (ELN) and Wyeth by way of trading on illegal knowledge of negative trials in an Alzheimer's drug being developed by both companies. While allegations do not mention Cohen by name, they repeatedly refer to a "Hedge Fund Owner" as receiving Martoma's advice to sell shares and instructing the hedge fund to liquidate large blocks of stock.

In Martoma's alleged fraud, algorithmic trading and dark pools appear to have played a key role in obscuring what the U.S. Attorney says is the biggest insider trading profit in U.S. history for years.

According to the U.S. Attorney, after receiving a tip that pharmaceuticals Elan and Wyeth would soon disclose negative Alzheimer drug trials tests in late July 2008, Martoma is alleged to have told SAC's owner to liquidate the fund's position in both company's shares.

SAC did so by way of its head trader and a massive selling program of over 10.5 million Elan shares over a span of four days. The U.S. Attorney says in its charge that SAC Capital's selling represented over 20% of the reported trading volume in Elan's shares and 11% of the volume of Wyeth's shares in the seven trading days prior the disclosure of negative drug trials.

Still, emails floated between a SAC's trader who executed the sale, the fund's owner, and Martoma show that SAC Capital felt its selling had gone undetected by the wider market. The main reason why: the use of trading algorithms and 'dark pools.'

"We executed a sale of over 10.5 million ELN for [four internal Hedge Fund account names] at an avg price of 34.21. This was executed quietly and effectively over a 4 day period through algos and darkpools," writes the executing trader, according to the U.S. attorney's complaint.

"This process clearly stopped leakage of info from either in [or] outside the firm and in my viewpoint clearly saved us some slippage," the trader adds.
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