This is CNBC's Morning Squawk newsletter. Subscribe here to receive future editions in your inbox. Happy Thursday. It was a big night for the Knicks — and for the New York City bar that used prediction markets to hedge its customers' tabs. S&P 500 futures are falling this morning. The major indexes are coming off a down day. Here are five key things investors need to know to start the trading day: Stocks pulled back sharply yesterday, pressured by rising oil prices and Treasury yields amid the