NEW YORK — Welcome to the worst month of the year for Wall Street.
Since 1950, September has brought an average loss of 0.5% for the S&P500 That’s 10 times evenworse than the next-worst month, February.
September is likewise the just month of the year over that period to turn in a loss more frequently than a gain. Other months see the S&P 500 increase more than 3 times out of 5.
Stretch the horizon even evenmore, back to 1928 to consistof a world war, the Great Depression and entirely various types of economies, and September is still the most regular stinker for Wall Street.
No clear factor describes September’s battle, though numerous hypotheses attempt. One sugge