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

SecurityMEG / Montrose Environmental Group, Inc.
InstitutionAdvisor Group Holdings, Inc.
Latest Disclosed Ownership1,815 shares
Latest Disclosed Value $ 39,729
Advisor Group Holdings, Inc. reports 1.25% decrease in ownership of MEG / Montrose Environmental Group, Inc.

On May 15, 2026 - Advisor Group Holdings, Inc. filed a 13F-HR form disclosing ownership of 1,815 shares of Montrose Environmental Group, Inc. (US:MEG) valued at $39,730 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,838 shares of Montrose Environmental Group, Inc.. This represents a change in shares of -1.25% during the quarter. The current value of the position is $40,184 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 1,815 -23 -1.25 40 -13.33 0.0000
2026-02-17 2025-12-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 1,838 -471 -20.40 46 -28.57 0.0001
2025-11-14 2025-09-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 2,309 286 14.14 64 43.18 0.0001
2025-09-04 2025-06-30 13F/A-1 MONTROSE ENVIRONMENTAL GROUP COM 615111101 2,023 -1,858 -47.87 44 -20.00 0.0001
2025-08-13 2025-06-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 395 -3,486 7 0.0000
2025-05-12 2025-03-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 3,881 3,163 440.53 55 323.08 0.0001
2025-06-06 2024-12-31 13F/A-1 MONTROSE ENVIRONMENTAL GROUP COM 615111101 718 -86 -10.70 13 -38.10 0.0000
2025-02-07 2024-12-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 811 7 19 0.0000
2024-11-13 2024-09-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 804 -34 -4.06 21 -43.24 0.0000
2024-08-13 2024-06-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 838 246 41.55 37 60.87 0.0001
2024-05-10 2024-03-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 592 -8,581 -93.55 23 -92.15 0.0001
2024-02-12 2023-12-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 9,173 -6,583 -41.78 294 -36.30 0.0005
2023-11-13 2023-09-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 15,756 -7,064 -30.96 461 -52.13 0.0007
2023-08-21 2023-06-30 13F/A-1 MONTROSE ENVIRONMENTAL GROUP COM 615111101 22,820 -4,515 -16.52 961 -1.33 0.0017
2023-08-10 2023-06-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 22,820 -4,515 961 0.0003
2023-05-12 2023-03-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 27,335 -5,630 -17.08 975 -33.38 0.0018
2023-02-10 2022-12-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 32,965 -8,389 -20.29 1,463 5.10 0.0030
2022-11-14 2022-09-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 41,354 1,428 3.58 1,391 3.19 0.0032
2022-08-10 2022-06-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 39,926 7,428 22.86 1,348 -21.63 0.0030
2022-05-04 2022-03-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 32,498 2,780 9.35 1,720 -17.94 0.0033
2022-02-03 2021-12-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 29,718 13,100 78.83 2,096 104.29 0.0040
2021-11-05 2021-09-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 16,618 8,357 101.16 1,026 131.60 0.0021
2021-08-02 2021-06-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 8,261 4,693 131.53 443 147.49 0.0010
2021-05-13 2021-03-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 3,568 2,895 430.16 179 752.38 0.0004
2021-02-10 2020-12-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 673 673 21 0.0001
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.