csNot sure why as the regional exchanges have gone away as it just makes sense with trading happening online. My guess is that they are hoping to avoid state regulators in NY State or want to be in the 5th Circuit of Federal Appeals. Any other ideas why this makes any sense?
https://www.cbsnews.com/texas/news/sec-approves-texas-stock-exchange-txse/
SEC approves Texas Stock Exchange, first new U.S. fully integrated exchange in decades
The SEC approved TXSE as a national securities exchange, paving the way for the first new, fully integrated U.S. stock exchange in decades — and the only one based in Texas.