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Trump Denounces NYSE’s Dallas Expansion, Calls It a Test for NYC Mayor Mamdani

The Dallas venue, created by reincorporating NYSE Chicago as a fully electronic exchange, is presented by its owner as a regional addition under SEC oversight.

Overview

  • Trump wrote on Truth Social that building a New York Stock Exchange presence in Dallas is “unbelievably bad” for New York and a “big test” for Mayor Zohran Mamdani.
  • NYSE Texas operates out of Dallas as a fully electronic market that evolved from the former Chicago Stock Exchange and began trading in 2025, attracting several dual listings.
  • Intercontinental Exchange and the NYSE say the move is meant to broaden their footprint to serve companies in the South and Southwest rather than replace New York operations.
  • Oversight of U.S. stock exchanges rests with the Securities and Exchange Commission, meaning New York City’s mayor has no authority over the expansion.
  • Dallas Mayor Eric Johnson welcomed the development, and ICE notes Texas hosts more NYSE-listed companies than any other state, representing over $3.7 trillion in market value.