Ameresco AMRC Institutional Ownership

Updated Oct 11, 2026

Ameresco, Inc. (NYSE:AMRC) was held by 184 institutional investors that filed 13F reports for the quarter ended June 30, 2026.

• These investors held 65.50% of Ameresco's outstanding shares at the end of Q2 2026, up from 57.96% in Q1 2026.
• Total shares held in Ameresco rose 13.27% from Q1 2026, while the number of holders rose 12.88% from Q2 2025.
• Looking at the 184 holders of AMRC individually, 103 added to their positions, 56 reduced their stakes and 25 left their positions unchanged.
• Altogether, institutional holders owned 34.76Mn AMRC shares at the end of Q2 2026, up 4.07Mn from the prior quarter and up 2.6Mn from a year earlier.
• Wellington Management Group LLP was the top holder of Ameresco as of June 30, 2026, with 3.37Mn shares, or 6.36% of shares outstanding.
• The largest position increases in AMRC for Q2 2026 were by Millennium Management LLC (+1.23Mn shares), UBS Group AG (+307.9K shares), American Century Companies Inc (+271.97K shares), State Street Corp (+271.61K shares) and Legal & General Group PLC (+247.06K shares).
• Holders that trimmed the most shares of Ameresco in Q2 2026 while keeping a position were Granahan Investment Management, LLC (-606.45K shares), Royce & Associates LP (-251.72K shares), Bridgeway Capital Management, LLC (-210.86K shares), Grantham, Mayo, Van Otterloo & Co. LLC (-198.68K shares) and Wellington Management Group LLP (-166.81K shares).
• Per Business Quant data, the 10 largest holders of Ameresco at the end of Q2 2026 were Wellington Management Group LLP (3.37Mn shares), BlackRock, Inc. (2.65Mn shares), Grantham, Mayo, Van Otterloo & Co. LLC (2.03Mn shares), Dimensional Fund Advisors LP (1.6Mn shares), State Street Corp (1.6Mn shares), Millennium Management LLC (1.49Mn shares), Vanguard Capital Management LLC (1.43Mn shares), D. E. Shaw & Co., Inc. (1.26Mn shares), DnB Asset Management AS (1.03Mn shares) and Royce & Associates LP (998.18K shares).