Ametek Inc/ (AME) Institutional Ownership

Ownership Summary

A total of 459 institutions have reported a stake in Ametek Inc/ (NYSE:AME) as of December 2025, according to recent 13F filings with the SEC.

• The percentage of Ametek owned by institutions changed from 85.8% in September 2025 to 23.3% in December 2025, marking a slight down trend.
• In percentage terms, this reflects as a holdings change of 2.66% quarter on quarter, and a decrease of 52.87% year over year.
• A review of institutional activity for Ametek shows 227 of 459 filers increasing their positions, while 143 reduced their stake, and 89 remained unchanged.
• The aggregate institutional position in Ametek now stands at 54.07Mn shares as of December 2025, after investors increased their holdings (up by 1.40Mn shares quarter on quarter which is down 145.57Mn shares year over year).
• With 27.17Mn shares, VANGUARD GROUP INC commands the largest institutional position in Ametek as of December 31, 2025, equating to 11.70% of the company.
• Among the most significant buyers of Ametek during December 2025 were NORDEA INVESTMENT MANAGEMENT AB (760.41K), NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO (378.92K), Assenagon Asset Management S.A. (297.05K), PFA Pension, Forsikringsaktieselskab (272.48K), SG Americas Securities, LLC (186.48K).
• Leading sellers of Ametek stock in December 2025 included UBS Group AG (360.10K), Alecta Tjanstepension Omsesidigt (248.00K), JENNISON ASSOCIATES LLC (127.66K), ASSETMARK, INC (45.42K), THRIVENT FINANCIAL FOR LUTHERANS (35.34K).
• The top 10 institutional holders of Ametek for the quarter ending December 2025 included VANGUARD GROUP INC (27.17Mn), FLOSSBACH VON STORCH SE (3.82Mn), PRINCIPAL FINANCIAL GROUP INC (2.04Mn), Alecta Tjanstepension Omsesidigt (1.47Mn), MASSACHUSETTS FINANCIAL SERVICES CO /MA/ (959.94K), GABELLI FUNDS LLC (944.18K), UBS Group AG (868.68K), NORDEA INVESTMENT MANAGEMENT AB (852.59K), DekaBank Deutsche Girozentrale (852.06K), Bank Julius Baer & Co. Ltd, Zurich (810.72K).