Antero Midstream Corporation
US ˙ NYSE ˙ US03676B1026

SecurityAM / Antero Midstream Corporation
InstitutionMoors & Cabot, Inc.
Latest Disclosed Ownership20,358 shares
Latest Disclosed Value $ 464,162
Moors & Cabot, Inc. reports 17.49% decrease in ownership of AM / Antero Midstream Corporation

On May 8, 2026 - Moors & Cabot, Inc. filed a 13F-HR form disclosing ownership of 20,358 shares of Antero Midstream Corporation (US:AM) valued at $464,162 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 24,673 shares of Antero Midstream Corporation. This represents a change in shares of -17.49% during the quarter. The current value of the position is $433,015 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)
2026-05-08 2026-03-31 13F ANTERO MIDSTREAM COM 03676B102 20,358 -4,315 -17.49 464 5.94 0.0199
2026-02-10 2025-12-31 13F ANTERO MIDSTREAM COM 03676B102 24,673 410 1.69 439 -7.01 0.0188
2025-11-14 2025-09-30 13F ANTERO MIDSTREAM COM 03676B102 24,263 -763 -3.05 472 -0.63 0.0206
2025-08-06 2025-06-30 13F ANTERO MIDSTREAM COM 03676B102 25,026 -2,890 -10.35 474 -5.58 0.0220
2025-05-08 2025-03-31 13F ANTERO MIDSTREAM COM 03676B102 27,916 -5,665 -16.87 502 -0.79 0.0255
2025-02-07 2024-12-31 13F ANTERO MIDSTREAM COM 03676B102 33,581 -500 -1.47 507 -1.17 0.0241
2024-11-08 2024-09-30 13F ANTERO MIDSTREAM COM 03676B102 34,081 -300 -0.87 513 1.19 0.0255
2024-08-09 2024-06-30 13F ANTERO MIDSTREAM COM 03676B102 34,381 150 0.44 507 5.20 0.0270
2024-05-08 2024-03-31 13F ANTERO MIDSTREAM COM 03676B102 34,231 900 2.70 481 15.35 0.0261
2024-02-14 2023-12-31 13F ANTERO MIDSTREAM COM 03676B102 33,331 1,600 5.04 418 9.74 0.0260
2023-11-08 2023-09-30 13F ANTERO MIDSTREAM COM 03676B102 31,731 2,900 10.06 380 13.77 0.0258
2023-08-10 2023-06-30 13F ANTERO MIDSTREAM COM 03676B102 28,831 3,980 16.02 334 28.46 0.0222
2023-05-05 2023-03-31 13F ANTERO MIDSTREAM COM 03676B102 24,851 1,625 7.00 261 4.00 0.0179
2023-02-10 2022-12-31 13F/A-1 ANTERO MIDSTREAM COM 03676B102 23,226 1,050 4.73 251 22.55 0.0175
2022-11-08 2022-09-30 13F ANTERO MIDSTREAM COM 03676B102 22,176 2,382 12.03 204 13.97 0.0155
2022-08-08 2022-06-30 13F ANTERO MIDSTREAM COM 03676B102 19,794 5,693 40.37 179 16.99 0.0129
2022-05-13 2022-03-31 13F ANTERO MIDSTREAM COM 03676B102 14,101 11,057 363.24 153 -27.83 0.0094
2021-11-05 2021-09-30 13F ANTERO MIDSTREAM COM 03676B102 3,044 3,044 212 0.0156
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.