Montrose Environmental Group, Inc. (MEG) Institutional Ownership

Ownership Summary

Montrose Environmental Group, Inc. (NYSE:MEG) currently has 179 active institutional owners and shareholders as of today (December 2025), that have filed 13F forms with the Securities Exchange Commission (SEC).

• The percentage of Montrose Environmental owned by institutions changed from 81.9% in September 2025 to 82.2% in December 2025, marking a slight up trend.
• Institutional share ownership changed by 15.17% QoQ, while the number of institutional owners saw an increase of 8.48% YoY.
• During the quarter, 94 institutions bought more Montrose Environmental shares, 61 sold shares, and 24 of the 179 total investors held their position steady.
• Collectively, institutional investors increased their stake in Montrose Environmental to 32.81Mn shares as of December 2025, a change that is up by 4.32Mn shares quarter on quarter and down 1.19Mn shares year over year.
• BlackRock, Inc. continues to be the largest institutional holder of Montrose Environmental as of December 31, 2025, with a position of 3.24Mn shares, representing 8.12% of the company's outstanding stock.
• Among the most significant buyers of Montrose Environmental during December 2025 were NOMURA ASSET MANAGEMENT INTERNATIONAL INC. (1.65Mn), PRINCIPAL FINANCIAL GROUP INC (1.28Mn), GOLDMAN SACHS GROUP INC (975.77K), Allspring Global Investments Holdings, LLC (408.36K), ALGERT GLOBAL LLC (387.67K).
• Leading sellers of Montrose Environmental stock in December 2025 included BANK OF AMERICA CORP /DE/ (528.02K), JANE STREET GROUP, LLC (330.12K), UBS Group AG (250.14K), MILLENNIUM MANAGEMENT LLC (172.28K), MARSHALL WACE, LLP (168.65K).
• The top 10 institutional holders of Montrose Environmental for the quarter ending December 2025 included BlackRock, Inc. (3.24Mn), BAMCO INC /NY/ (2.16Mn), VANGUARD GROUP INC (1.99Mn), GOLDMAN SACHS GROUP INC (1.73Mn), NOMURA ASSET MANAGEMENT INTERNATIONAL INC. (1.65Mn), UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC (1.46Mn), PRINCIPAL FINANCIAL GROUP INC (1.28Mn), FRED ALGER MANAGEMENT, LLC (1.07Mn), ALLIANCEBERNSTEIN L.P. (893.43K), TRUIST FINANCIAL CORP (803.93K).