Fox drops on news of share delisting SHARES in 21st Century Fox suffered their biggest one-day fall since being created from a spin-out of News Corporation as investors took profits following moves by the company to end its Australian listing. Observers said the smart money was betting that plans to consolidate trading of 21st Century Fox shares on the Nasdaq market in the US would pass a shareholder vote due by April and was selling now to lock in the gains from a surge in the price since its demerger in June last year.