Ameren Corp (AEE) Institutional Ownership

Ownership Summary

A total of 365 institutions have reported a stake in Ameren Corp (NYSE:AEE) as of December 2025, according to recent 13F filings with the SEC.

• The percentage of Ameren owned by institutions changed from 85.4% in September 2025 to 20.3% in December 2025, marking a slight down trend.
• The company experienced a 2.39% quarterly change in institutional shares held, alongside a decrease of 49.66% in total owners annually.
• A review of institutional activity for Ameren shows 186 of 365 filers increasing their positions, while 87 reduced their stake, and 92 remained unchanged.
• The total number of shares held by institutions in Ameren increased to 54.89Mn as of December 2025, a net change of up by 1.28Mn shares quarter on quarter, and down 166.09Mn shares year over year.
• The top institutional stake in Ameren as of December 31, 2025 belongs to VANGUARD GROUP INC, which owns 35.65Mn shares, or 13.21% of the company.
• Among the most significant buyers of Ameren during December 2025 were Assenagon Asset Management S.A. (513.57K), VANGUARD GROUP INC (495.94K), SG Americas Securities, LLC (142.17K), Krilogy Financial LLC (80.54K), Robeco Institutional Asset Management B.V. (68.14K).
• Leading sellers of Ameren stock in December 2025 included ANTIPODES PARTNERS Ltd (127.27K), MASSACHUSETTS FINANCIAL SERVICES CO /MA/ (95.13K), Pictet Asset Management Holding SA (62.23K), DUFF & PHELPS INVESTMENT MANAGEMENT CO (47.48K), BESSEMER GROUP INC (35.51K).
• The top 10 institutional holders of Ameren for the quarter ending December 2025 included VANGUARD GROUP INC (35.65Mn), BESSEMER GROUP INC (2.74Mn), Pictet Asset Management Holding SA (2.00Mn), MASSACHUSETTS FINANCIAL SERVICES CO /MA/ (1.69Mn), JENNISON ASSOCIATES LLC (1.44Mn), ANTIPODES PARTNERS Ltd (1.24Mn), DUFF & PHELPS INVESTMENT MANAGEMENT CO (1.20Mn), UBS Group AG (973.19K), Sumitomo Mitsui Trust Group, Inc. (637.36K), Mitsubishi UFJ Asset Management Co., Ltd. (568.72K).