Since the start of the Dow in 1896, there have only been 19 Leap Years with February 29 falling on a weekday including today. The last occurrence was eight years ago in 2000. Leap Day has been a down day more than up; only the Nasdaq has had more up Leap Days than down. Today's futures are pointing to an open that would follow this pattern.
February 29 and the Markets
Month to date the three major indices are down. The Dow is down the least, only down .5%.