SpaceX’s Tesla Tie-Up, Muse Momentum, and AI’s 1% 10/21/26

SpaceX pop on strong earnings and Elon Musk’s signaling about the possibility of a merger with Tesla, but one AI researcher is flagging a risk he calls an “unacceptable liability.” Meta shares down nearly 10% from its high following Muse’s launch, will third quarter results bring the momentum back? Plus, the AI industry’s new spending problem.