The Wall Street Journal has a noteworthy investigation today, and one that I thought was worth flagging. Essentially, it found the borrowers whose home mortgages were the underlying collateral in Goldman Sachs' Abacus 2007-AC1 CDO deal. That's the CDO that is now the subject of the SEC's civil-fraud charges against Goldman Sachs. Finding these homeowners could not have been an easy process. The Journal looked through the Abacus pitchbook and found the 90 bonds that were in the portfolio.