SCHEDULE: Vanguard Group Reports 10.25% Stake in Amphenol Corp

The Vanguard Group disclosed a 10.25% beneficial ownership stake in Amphenol Corp, holding over 125 million shares as of September 30, 2025.

Summary

• The Vanguard Group beneficially owns 125,227,087 shares of Amphenol Corp's Common Stock.
• This ownership represents 10.25% of the class of securities.
• Vanguard holds sole dispositive power over 113,675,172 shares and shared dispositive power over 11,551,915 shares.
• Vanguard holds shared voting power over 7,332,606 shares and no sole voting power.
• The securities were acquired and are held in the ordinary course of business, not for the purpose of changing or influencing control of Amphenol Corp.

Sentiment

Score: 6

Explanation: The filing is a routine disclosure of a significant institutional ownership stake. While not directly positive or negative about the company's performance, a large, passive investment by Vanguard is generally viewed as a stable factor for a company's stock, indicating its inclusion in broad market indices.

Positives

• Significant institutional investment by The Vanguard Group, indicating confidence in Amphenol Corp's long-term prospects.
• Vanguard's passive investment strategy suggests a stable, long-term shareholder base for Amphenol Corp.

Negatives

• No specific negative information is presented in this beneficial ownership report.

Risks

• No specific risks related to Amphenol Corp's operations or financial health are disclosed in this beneficial ownership filing.
• Large institutional ownership, while often stable, can sometimes lead to concentrated voting power on certain issues, though Vanguard's certification states no intent to influence control.

Future Outlook

NA

Management Comments

• The securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities.

Industry Context

This filing indicates a significant passive investment by one of the world's largest asset managers, The Vanguard Group, in Amphenol Corp. Such large institutional holdings are common for well-established companies and reflect their inclusion in various index funds and ETFs managed by Vanguard. It signals that Amphenol Corp is a component of major market indices, attracting broad institutional investment.

Stakeholder Impact

• Shareholders: The presence of a large, passive institutional investor like Vanguard can contribute to stock stability and liquidity.
• Management: Awareness of a significant institutional holder may influence management decisions, though Vanguard explicitly states no intent to influence control.

Key Dates

Keywords

Amphenol Corp, Vanguard Group, Schedule 13G, Beneficial Ownership, Institutional Investor, Common Stock, APH, SEC Filing