This is CNBC's Morning Squawk newsletter. Subscribe here to receive future editions in your inbox. Here are five key things investors need to know to start the trading day: The blue-chip Dow Jones Industrial Average surged to a new record close yesterday. But the technology-heavy Nasdaq Composite sat out of the gains, as key artificial intelligence stocks floundered. Here's the rundown: While the government shutdown could be over soon, don't expect the Bureau of Labor Statistics to release all