From Bespoke Investment Group:
The Dow is on pace to finish down for the ninth straight trading day. The last time the index closed down nine days in a row was more than 30 years ago, back in February 1978. Going back to 1900, there have only been nine other periods where the Dow declined for nine or more straight trading days. The longest such streak was 14 days back in 1941.
One not so positive trend of the streaks below is that of the nine periods highlighted, the streak only ended at nine days three times (33%). In fact, of the nine streaks where the DJIA closed down nine days in a row, more than half of them (five) lasted eleven days or more.