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, and NYSE National 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