MONTROSE ENVIRONMENTAL GROUP (MEG) Institutional Ownership Changes & 13F Activity

MONTROSE ENVIRONMENTAL GROUP (MEG). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q4 2025). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Bamco Inc, Nomura Asset Management International Inc., Fred Alger Management, Llc, Alliancebernstein L.P., and Janus Henderson Group Plc.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Op Asset Management LtdSell-8,260-10.2%72,716$1.81MQ4 2025Sep 28, 2026
Algert Global LlcBuy+387,667+216.3%566,855$14.08MQ4 2025Aug 11, 2026
Hsbc Holdings PlcBuy+10,735—10,735$265.91KQ4 2025Mar 06, 2026
Sunbelt Securities, Inc.Buy+14—14$348.00Q4 2025Feb 20, 2026
Bamco IncBuy+2,160,599—2,160,599$53.65MQ4 2025Feb 17, 2026
Nomura Asset Management International Inc.Buy+1,653,379—1,653,379$41.05MQ4 2025Feb 17, 2026
Fred Alger Management, LlcBuy+1,068,555—1,068,555$26.53MQ4 2025Feb 17, 2026
Alliancebernstein L.P.Buy+893,428—893,428$22.18MQ4 2025Feb 17, 2026
Janus Henderson Group PlcBuy+763,892—763,892$18.97MQ4 2025Feb 17, 2026
Fmr LlcBuy+452,856—452,856$11.24MQ4 2025Feb 17, 2026
Bank Of America CorpBuy+402,596—402,596$10.00MQ4 2025Feb 17, 2026
Silvercrest Asset Management Group LlcBuy+354,434—354,434$8.80MQ4 2025Feb 17, 2026
Blair William & Co/IlBuy+340,869—340,869$8.46MQ4 2025Feb 17, 2026
Northern Trust CorpBuy+326,129—326,129$8.10MQ4 2025Feb 17, 2026
Arrowmark Colorado Holdings LlcBuy+269,413—269,413$6.69MQ4 2025Feb 17, 2026
Aqr Capital Management LlcBuy+215,738—215,738$5.36MQ4 2025Feb 17, 2026
Granahan Investment Management, LlcBuy+199,317—199,317$4.95MQ4 2025Feb 17, 2026
Russell Investments Group, Ltd.Buy+198,017—198,017$4.92MQ4 2025Feb 17, 2026
Trexquant Investment LpBuy+174,541—174,541$4.33MQ4 2025Feb 17, 2026
Citadel Advisors LlcBuy+172,754—172,754$4.29MQ4 2025Feb 17, 2026
Tudor Investment Corp Et AlBuy+168,699—168,699$4.19MQ4 2025Feb 17, 2026
Rockefeller Capital Management L.P.Buy+127,935—127,935$3.18MQ4 2025Feb 17, 2026
Millennium Management LlcBuy+71,586—71,586$1.78MQ4 2025Feb 17, 2026
Engineers Gate Manager LpBuy+59,682—59,682$1.48MQ4 2025Feb 17, 2026
Creative PlanningBuy+55,346—55,346$1.37MQ4 2025Feb 17, 2026
Dark Forest Capital Management LpBuy+45,187—45,187$1.12MQ4 2025Feb 17, 2026
Royal Bank Of CanadaBuy+30,978—30,978$770.00KQ4 2025Feb 17, 2026
California State Teachers Retirement SystemBuy+30,062—30,062$746.44KQ4 2025Feb 17, 2026
Canada Pension Plan Investment BoardBuy+29,500—29,500$732.49KQ4 2025Feb 17, 2026
Gotham Asset Management, LlcBuy+27,719—27,719$688.26KQ4 2025Feb 17, 2026
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Frequently asked questions about MEG activity

  • Which institutional owners are buying MEG?

    Institutional owners buying MEG include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in MEG activity?

    "Buy" means an investor increased their reported position in MEG compared to the prior reporting period. This reflects growing exposure to MONTROSE ENVIRONMENTAL GROUP (MEG) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in MEG increasing?

    Institutional interest in MEG can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.