Barack Obama and the Dow

You may recall that some opponents of President Obama have on occasion used the gyrations of the stock market to declare, or at least hint, that his economic policies weren't working. For instance, back on February 21, Dave Burris linked to this post by Liz Peek declaring, "Stock Market Gives Obama’s First Month an F."
Today the Dow Jones Industrial Average closed at 8,083.38, slightly higher than it did on January 20, the day Obama took office. The S&P 500 also finished slightly higher (856.56) than its January 20 closing price.
Perhaps those using stock indices to grade Obama could now give him a gentleman's C (or higher if you want to account for degree of difficulty).
I'm happy that the stock market is showing some strength. But using the daily or weekly fluctuations of stock indices is hardly a way to evaluate the president's economic strategy.