Bob Geldof was wrong. Mondays are great. Since 1st July 2009, Mondays have shown a statistically relevant preference to rally. Would you believe that 80% of Mondays the market has risen. As I was looking at the Australian market yesterday, I was considering how the US market would trade overnight, and decided that even Goldman Sachs and Volcano Ash wasn't going to stop a small rally. And sure enough, the S&P 500 is up .45% (strangely maintaining the average).
Call it melt up Monday, but you can only speculate why this behaviour is occurring. Some say it is the Mutual Funds allocating equity subscriptions, the perma-bears think it is a concerted Government campaign to ensure the market never falls again, but with Citibank shares accounting for 20% of total market volume, you get the sense that there is just a disconnect between the US sharemarket and reality. By the way - sell on Fridays.