An American black bear in Kenia, Alaska.
An American black bear in Kenia, Alaska.
  • There are seven risks that could spark a stock sell-off this month, according to market veteran Ed Yardeni.
  • He highlighted that the S&P 500 is at risk of falling about 7% to its 200-day moving average.
  •  "It is widely viewed as a rotten month for stocks, which has been true during 55% of Septembers since 1928."

The stock market could be gearing up for a sell-off this month, according to market veteran Ed Yardeni, as September is seasonally the worst month of the year for equity returns.

"It is widely viewed as a rotten month for stocks, which has been true during 55% of Septembers since 1928," he said.