# NYSE Auction Imbalance Data Trading Hours Opening and Closing Auction Imbalance data for the NYSE Exchange Trading Hours are divided into multiple sessions #### NYSE Auction Imbalance Data - Trading Hours | Session Name | Time Zone | Start Time | End Time | |----------------|------------------|--------------|------------| | PRE_MARKET | America/New_York | 04:00 | 09:30 | | MARKET | America/New_York | 08:00 | 16:00 | | POST_MARKET | America/New_York | 16:00 | 20:00 |