Tesla shares (TSLA) ended this trading week nearly 4% higher — gaining back some ground from post-earnings declines — after the EV maker announced that the first of its long-awaited Tesla Semi truck has come off the “high volume” production line Yahoo Finance Senior Autos Reporter Pras Subramanian highlights Tesla’s weekly gains while underlining the 2025 sales boost that came from purchases from SpaceX (SPAX.PVT) and xAI — both ventures owned by CEO Elon Musk.