SEC charges Goldman Sachs with fraud - Apr. 16, 2010
As reported on CNN.com, the SEC has charged Goldman Sachs with fraud relating to their involvement with subprime mortgage-backed securities. The charges center around allegedly undisclosed conflicts of interest between Goldman and a hedge fund named Paulson & Co. According to the SEC, Paulson & Co pooled mortgages that were then sold to investors as mortgage-backed securities. The investors, who were betting that the market would go up, were not told that Paulson & Co. had shorted the exact same investment pool.
For those who don't know a bunch about the markets, "shorting" something basically means that you borrow and sell the stock before you own it, with an obligation to eventually purchase it at a (hopefully) lower price. If all goes well, you end up with a nice profit. In the case of Paulson & Co., their nice profit was about $1 billion, according to the SEC.
So how did Paulson know that this specific CDO would drop? Allegedly, Paulson & Co. pooled the securitized mortgages, picking them based on the likelihood that they would fail.
I find this to be a highly interesting situation, and look forward to its development. As the SEC continues to examine transactions, it may very well uncover more of these situations. You never know what you'll find when you start turning over rocks.

