We got an updated look at the billionaire's stock portfolio, and there were some interesting moves.We recently got an updated look at the portfolios of many notable hedge funds, and there were a few moves from notable billionaire Bill Ackman's Pershing Square. These include a couple of large stock sales, as well as a couple of new positions.One of the sales in particular stood out, as it has been one of the fund's best performers and is a member of the "Magnificent Seven." Here's a rundown of Pershing's lat ...