Financial services firm Cantor Fitzgerald will open a bitcoin financing business, CEO Howard Lutnick said at the Bitcoin Conference Saturday. Cantor Fitzgerald's new lending facility isn't its first step into crypto; It already does business with stablecoin issuer Tether. Cantor Fitzgerald is well known on Wall Street as one of the world's biggest bond brokerages and already handles U.S. Treasury trading with the biggest stablecoin issuer, Tether.