Amphenol Stock Plunges as Volume Surges to 188th-Highest Amid Sector Rotation and Short-Interest Spike

Amphenol (APH) closed 10/10/2025 with a 3.60% decline, despite a 68.9% surge in trading volume to $700 million—the 188th highest on the day. The stock’s performance diverged from its recent momentum, as institutional selling pressure offset broader market optimism.

Analysts noted that the drop coincided with a broader sector rotation away from connectivity stocks, driven by macroeconomic concerns and profit-taking after a three-month rally. Short-interest data showed a 15% increase in open short positions, suggesting bearish sentiment may persist in the near term.

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