Historical clue formulations

• Nasdaq and N.Y.S.E.: Abbr. — 2023-07-16
• N.Y.S.E. and Nasdaq: Abbr. — 2019-03-07
• Stock exchanges: Abbr. — 2009-08-10
• Trading places: Abbr. — 2009-01-15
• N.Y.S.E. and Nasdaq, e.g. — 2006-04-23