The S&P 500 SPDR ETF (SPY) closed today at 666 (chart). I have fond memories of that number. I wrote on March 16, 2009: "We’ve been to Hades and back. The S&P 500 bottomed last week on March 6 at an intraday low of 666. This is a number commonly associated with the Devil. . . . The latest relief rally was sparked by lots of good news for a refreshing change, which I believe may have some staying power. . . . I'm rooting for more good news, and hoping that 666 was THE low." The same day, the Fed's first round of quantitative easing was expanded to $1.25 trillion in mortgage-related securities and $300 billion in Treasury bonds.