The TAQ Closing Prices files are available each trading day and show the Open/High/Low/Last prices, Total Volume, Closing Bid, Closing Ask, etc. for all NYSE, NYSE American, NYSE Arca, NYSE National, and NYSE Chicago securities as of the market close. Historical data is available from 1 Nov 2001 - present. Data for NYSE National available as of May 21, 2018 - present.
Production starting June 12, 2017
Production launch for NYSE National on May 21, 2018