Citadel Securities, BlackRock back Texas Stock Exchange in challenge to NYSE, Nasdaq

Wall Street titans BlackRock and Citadel Securities are throwing their financial muscle behind the launch of the Texas Stock Exchange — which plans to challenge New York-centric markets in a bid to attract global companies.The Dallas-headquartered bourse, which has raised about $120 million, plans to file registration documents with the Securities and Exchange Commission to start operating as a national securities exchange later this year, TXSE said on Wednesday.TXSE aims to attract listings of exchange-tra ...