Stocks have calmed after a rocky start to August. Tech stocks ( XLK ) have bounced back, and markets ( ^DJI , ^IXIC , ^GSPC ) seem stable for now. But September, historically the weakest month for stocks, is approaching. According to Bank of America ( BAC ) data, the S&P 500 only rose 44% of the time during September since 1928. Furthermore, in presidential election years, both September and October have historically yielded underwhelming average returns of -0.46% and -0.34%, respectively.

On today's Market Minute, Yahoo Finance executive editor Brian Sozzi discusses these historical market trends, considering what they might mean for current market conditions.