Some of the stories sure to move markets next week include the head of the Federal Aviation Administration (FAA) testifying on Dec. 11 to House members on the status of un-grounding the Boeing 737 Max 8. A major general election next Thursday in the U.K. pits PM Boris Johnson against Labour Party leader Jeremy Corbyn on the fate of Brexit. TikTok's CEO meeting with lawmakers in Congress next week as the increasingly-popular app's security and ties to China are called into question.