Tesla shares dropped nearly 5% in U.S. premarket trading on Friday, extending losses from earlier week. On Wednesday, the stock fell 8%, marking its worst day since before the election. Tesla shares remain up about 65% since November 5th, driven by optimism around CEO Elon Musk’s ties to President-elect Donald Trump. Musk was a major Trump campaign donor appointed to co-lead the Department of Government Efficiency. Tesla’s Autopilot and Full Self-Driving systems remain semi-autonomous, requiring human supervision, as the company faces challenges in achieving full autonomy.