Montrose Environmental Group, Inc.
US ˙ NYSE ˙ US6151111019
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT

SecurityMEG / Montrose Environmental Group, Inc.
InstitutionAlliancebernstein L.p.
Latest Disclosed Ownership1,130,913 shares
Latest Disclosed Value $ 28,080,570
Alliancebernstein L.p. reports 26.58% increase in ownership of MEG / Montrose Environmental Group, Inc.

On May 15, 2026 - Alliancebernstein L.p. filed a 13F-HR form disclosing ownership of 1,130,913 shares of Montrose Environmental Group, Inc. (US:MEG) valued at $24,755,686 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 893,428 shares of Montrose Environmental Group, Inc.. This represents a change in shares of 26.58% during the quarter. The current value of the position is $25,038,414 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 1,130,913 237,485 26.58 28,081 26.58 0.0091
2026-02-17 2025-12-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 893,428 -94,559 -9.57 22,184 -18.23 0.0070
2025-11-14 2025-09-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 987,987 -294,782 -22.98 27,130 -3.38 0.0085
2025-08-14 2025-06-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 1,282,769 1,246,199 3,407.71 28,080 5,289.44 0.0092
2025-05-15 2025-03-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 36,570 0 0.00 521 -23.16 0.0002
2025-02-12 2024-12-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 36,570 0 0.00 678 -29.45 0.0002
2024-11-14 2024-09-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 36,570 0 0.00 962 -41.01 0.0003
2024-08-14 2024-06-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 36,570 12,170 49.88 1,630 70.58 0.0006
2024-05-14 2024-03-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 24,400 0 0.00 956 21.97 0.0003
2024-02-14 2023-12-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 24,400 0 0.00 784 9.82 0.0003
2023-11-14 2023-09-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 24,400 0 0.00 714 -30.57 0.0003
2023-08-15 2023-06-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 24,400 0 0.00 1,028 18.05 0.0004
2023-05-15 2023-03-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 24,400 0 0.00 870 -19.67 0.0004
2023-02-15 2022-12-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 24,400 0 0.00 1,083 31.91 0.0005
2022-11-15 2022-09-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 24,400 -8,567 -25.99 821 -26.24 0.0004
2022-08-15 2022-06-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 32,967 709 2.20 1,113 -34.80 0.0005
2022-05-13 2022-03-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 32,258 -3,957 -10.93 1,707 -33.16 0.0007
2022-02-14 2021-12-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 36,215 5,355 17.35 2,554 34.07 0.0009
2021-11-10 2021-09-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 30,860 98 0.32 1,905 15.38 0.0008
2021-07-30 2021-06-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 30,762 10,062 48.61 1,651 58.90 0.0007
2021-05-06 2021-03-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 20,700 20,700 1,039 0.0005
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.