# MONTROSE ENVIRONMENTAL GROUP COM

MONTROSE ENVIRONMENTAL GROUP COM is a security (CUSIP 615111101) tracked across SEC portfolio filings. 173 institutional managers reported $717.6M on Form 13F as of 2026-06-30; 22 registered fund positions totaling $49.4M via N-PORT as of 2026-05-31.

## Summary

- Issuer: MONTROSE ENVIRONMENTAL GROUP
- Class: COM
- CUSIP: 615111101
- Asset category: EC
- 13F holders: 173
- 13F value: $717.6M
- 13F period: 2026-06-30
- N-PORT fund positions: 22
- N-PORT value: $49.4M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 173 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| BlackRock, Inc. | New York, NY | $69.0M | 3,150,760 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $49.3M | 1,986,620 |
| [BAMCO INC /NY/](https://search.stillhousedata.com/firm/110789) | NEW YORK, NY | $47.5M | 2,168,183 |
| GOLDMAN SACHS GROUP INC | NEW YORK, NY | $42.9M | 1,960,610 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | PHILADELPHIA, PA | $33.5M | 1,531,641 |
| UBS ASSET MANAGEMENT AMERICAS INC | CHICAGO, IL | $33.2M | 1,515,671 |
| [ALLIANCEBERNSTEIN L.P.](https://search.stillhousedata.com/firm/108477) | NASHVILLE, TN | $28.1M | 1,130,913 |
| PRINCIPAL FINANCIAL GROUP INC | DES MOINES, IA | $25.1M | 1,244,046 |
| [ROYCE & ASSOCIATES LP](https://search.stillhousedata.com/firm/107689) | New York, NY | $20.9M | 954,776 |
| AMUNDI | PARIS, I0 | $19.2M | 880,032 |
| JANUS HENDERSON GROUP PLC | LONDON, X0 | $19.0M | 867,042 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $18.8M | 858,856 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $17.6M | 803,732 |
| Legal & General Group Plc | London, X0 | $16.5M | 753,684 |
| TRUIST FINANCIAL CORP | CHARLOTTE, NC | $16.0M | 792,718 |

## Top fund holders (N-PORT)

_Showing 15 of 22 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [Janus Henderson Venture Fund](https://search.stillhousedata.com/fund/S000010488) | JANUS INVESTMENT FUND | $15.4M | 50.09% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $8.1M | 1.00% |
| ROYCE MICRO-CAP TRUST, INC. | ROYCE MICRO-CAP TRUST, INC. | $5.1M | 74.06% |
| [AB Small Cap Value Portfolio](https://search.stillhousedata.com/fund/S000045542) | AB CAP FUND, INC. | $4.7M | 79.84% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $2.7M | 1.55% |
| Liberty All-Star Growth Fund | LIBERTY ALL STAR GROWTH FUND INC. | $2.2M | 64.16% |
| [Optimum Small-Mid Cap Growth Fund](https://search.stillhousedata.com/fund/S000002424) | Optimum Fund Trust | $1.9M | 25.62% |
| [U.S. MICRO CAP PORTFOLIO](https://search.stillhousedata.com/fund/S000000948) | DFA INVESTMENT DIMENSIONS GROUP INC | $1.6M | 2.18% |
| ROYCE SMALL-CAP TRUST, INC. | ROYCE SMALL-CAP TRUST, INC. | $1.5M | 6.67% |
| [TIFF MULTI-ASSET FUND](https://search.stillhousedata.com/fund/S000006387) | TIFF Investment Program | $1.3M | 9.26% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $1.2M | 2.46% |
| [Small Cap Core Portfolio](https://search.stillhousedata.com/fund/S000051867) | Bernstein Fund Inc | $1.1M | 15.47% |
| [Embark Small Cap Equity Fund](https://search.stillhousedata.com/fund/S000083503) | Harbor Funds II | $948K | 16.58% |
| [1290 Essex Small Cap Growth Fund](https://search.stillhousedata.com/fund/S000076802) | 1290 Funds | $543K | 48.44% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $396K | 0.07% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/615111101.md)
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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.