It's the latest calendar-based worry for investors: That the historically tricky month of September could bring trouble for stocks in 2014. But while the long-term historical metrics make the beginning of autumn look dangerous, Canaccord Genuity strategist Tony Dwyer says that concerns about the month are a bit overblown.
First of all, Dwyer grants that September may bring some trouble. Using data from SentimenTrader, he points out going back to 1929, in the 12 times that the S&P has risen more than 3 percent in August to hit a 52-week high (precisely the situation in the prior month) September has only been positive once. That means it's been a down month 92 percent of the time.
However, the median loss in those situations has been a mere 1 percent, he adds. And even that number is "highly skewed" by massive losses in the Great Depression and in 1987.
And while suggesting that September could bring rockiness, Dwyer maintains a very bullish perspective on stocks as a whole.
"If the market gods give you a gift of weakness, with the fundamental and tactical backdrop that we have, I think you want to be adding to your core position in equities," he said Tuesday on CNBC's "Futures Now."