The Dow is up over 235 points or 3.3 percent today with President Obama scheduled to give an address before a joint session of Congress. Other indices performed even better. We could claim that this demonstrates confidence in Obama among investors and is a sign of the success of his economic policies.
Actually there is not much basis for such claims, or any other claims based upon short term changes in the market, but this argument is just as valid as the many conservative attacks on Obama based upon recent stock market performance.
On the other hand, there probably is some meaning to the near 25% drop in the market when George Bush was in office.