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If you own Ford Motor (F), you may be wondering whether the worst has passed. The stock lost 13.5% in the past month, while the S&P 500 slipped 0.3%. A loss that fast can feel like the bad news is already in the price. So how much downside is left in Ford stock if the market turns as well.

If you owned Advanced Micro Devices (AMD) stock on Monday, September 21, 2026, you had a good day. The stock rose 9.9% in that one session. A $10,000 holding at the prior close was worth about $11,000 by the close. The S&P 500 rose 1.5% over the same session, so little of the gain came from the wider market. So what made AMD stock jump that Monday.