Amphenol Shares Climb on Defense Contracts and Cost Cuts as $790M Volume Ranks 135th

On October 8, 2025, Amphenol (APH) closed at $1.01 higher, with a trading volume of $790 million, ranking 135th in market activity. The stock's performance was influenced by recent developments in its defense and aerospace sectors, where the company secured a multi-year contract expansion. This follows a strategic shift in procurement policies by key government clients, boosting long-term revenue visibility.

Analysts highlighted the significance of Amphenol's recent supply chain restructuring, which reduced production costs by 8% in Q3 2025. The company also announced a $50 million investment in automation technology, signaling confidence in maintaining its competitive edge amid rising demand for high-performance connectors in 5G infrastructure projects.

For the backtest period from January 3, 2022, to October 8, 2025, clarification is required on four parameters: 1) whether to screen all U.S.-listed stocks or a specific index; 2) weighting methodology (e.g., equal-weight vs. dollar-volume proportional); 3) entry/exit price conventions (daily close vs. intraday prices); and 4) whether to account for transaction costs or slippage. Once these parameters are confirmed, the test can be executed to evaluate the strategy's historical performance.