Its stock price has risen over 54 percent so far this year to close Monday at $130.15.

The company has faced criticism for the US$12.9 billion in cash and collateral it received from insurer American International Group (AIG), which only made the payments due to the estimated $173 billion it got from the U.S. government.

But Goldman has proposed paying back the $10 billion in direct bailout money the government handed it last year as part of the Troubled Asset Relief Program (TARP). The champion of TARP was former Treasury Secretary Hank Paulson, who previously ran Goldman Sachs as its chairman and CEO.

Morgan says in a disclaimer on his blog that he is betting in the stock market against Goldman Sachs, and holds a short selling position.

The Goldman versus Morgan fight looks similar to a problem Wal-Mart Stores faced over Web sites devoted to hating the retailer.