Antero Midstream Corporation
US ˙ NYSE ˙ US03676B1026

SecurityAM / Antero Midstream Corporation
InstitutionAlps Advisors Inc
Latest Disclosed Ownership1,083,901 shares
Latest Disclosed Value $ 24,712,943
Alps Advisors Inc reports 4.58% decrease in ownership of AM / Antero Midstream Corporation

On May 8, 2026 - Alps Advisors Inc filed a 13F-HR form disclosing ownership of 1,083,901 shares of Antero Midstream Corporation (US:AM) valued at $24,712,943 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 1,135,956 shares of Antero Midstream Corporation. This represents a change in shares of -4.58% during the quarter. The current value of the position is $23,054,574 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.

Upgrade to unlock premium data and export to Excel .

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 1,083,901 -52,055 -4.58 24,713 22.29 0.1067
2026-02-12 2025-12-31 13F ANTERO MIDSTREAM COM 03676B102 1,135,956 143,994 14.52 20,209 4.80 0.1177
2025-11-05 2025-09-30 13F ANTERO MIDSTREAM COM 03676B102 991,962 -137,338 -12.16 19,284 -9.89 0.1074
2025-08-11 2025-06-30 13F ANTERO MIDSTREAM COM 03676B102 1,129,300 -99,266 -8.08 21,400 -3.23 0.1234
2025-04-30 2025-03-31 13F ANTERO MIDSTREAM COM 03676B102 1,228,566 223,487 22.24 22,114 45.81 0.1282
2025-02-13 2024-12-31 13F ANTERO MIDSTREAM COM 03676B102 1,005,079 -46,725 -4.44 15,167 -4.19 0.0957
2024-11-12 2024-09-30 13F ANTERO MIDSTREAM COM 03676B102 1,051,804 233,778 28.58 15,830 31.28 0.1059
2024-08-13 2024-06-30 13F ANTERO MIDSTREAM COM 03676B102 818,026 20,684 2.59 12,058 7.56 0.0828
2024-05-14 2024-03-31 13F ANTERO MIDSTREAM COM 03676B102 797,342 -32,782 -3.95 11,211 7.78 0.0794
2024-02-14 2023-12-31 13F ANTERO MIDSTREAM COM 03676B102 830,124 32,610 4.09 10,401 8.87 0.0818
2023-11-14 2023-09-30 13F ANTERO MIDSTREAM COM 03676B102 797,514 33,646 4.40 9,554 7.83 0.0793
2023-08-14 2023-06-30 13F ANTERO MIDSTREAM COM 03676B102 763,868 -127,014 -14.26 8,861 -5.19 0.0770
2023-05-10 2023-03-31 13F ANTERO MIDSTREAM COM 03676B102 890,882 46,631 5.52 9,345 2.59 0.0826
2023-02-14 2022-12-31 13F ANTERO MIDSTREAM COM 03676B102 844,251 12,344 1.48 9,109 19.27 0.0813
2022-11-14 2022-09-30 13F ANTERO MIDSTREAM COM 03676B102 831,907 82,378 10.99 7,637 12.59 0.0723
2022-08-15 2022-06-30 13F/A-1 ANTERO MIDSTREAM COM 03676B102 749,529 214,584 40.11 6,783 16.65 0.0660
2022-08-11 2022-06-30 13F ANTERO MIDSTREAM COM 03676B102 749,529 214,584 6,783 0.0649
2022-05-16 2022-03-31 13F ANTERO MIDSTREAM COM 03676B102 534,945 -61,469 -10.31 5,815 0.73 0.0631
2022-02-09 2021-12-31 13F ANTERO MIDSTREAM COM 03676B102 596,414 218,151 57.67 5,773 46.45 0.0650
2021-11-15 2021-09-30 13F ANTERO MIDSTREAM COM 03676B102 378,263 -28,565 -7.02 3,942 -6.74 0.0380
2021-08-11 2021-06-30 13F ANTERO MIDSTREAM COM 03676B102 406,828 70,920 21.11 4,227 39.37 0.0374
2021-05-07 2021-03-31 13F ANTERO MIDSTREAM COM 03676B102 335,908 19,331 6.11 3,033 24.25 0.0296
2021-02-03 2020-12-31 13F ANTERO MIDSTREAM COM 03676B102 316,577 111,646 54.48 2,441 121.91 0.0275
2020-11-05 2020-09-30 13F/A-1 ANTERO MIDSTREAM COM 03676B102 204,931 -48,222 -19.05 1,100 -14.79 0.0162
2020-11-04 2020-09-30 13F ANTERO MIDSTREAM COM 03676B102 204,931 -48,222 1,100 14,097.8178
2020-08-05 2020-06-30 13F ANTERO MIDSTREAM COM 03676B102 253,153 14,483 6.07 1,291 157.68 0.0173
2020-05-06 2020-03-31 13F ANTERO MIDSTREAM COM 03676B102 238,670 -42,592 -15.14 501 -76.53 0.0078
2020-02-07 2019-12-31 13F ANTERO MIDSTREAM COM 03676B102 281,262 63,844 29.36 2,135 32.69 0.0166
2019-11-04 2019-09-30 13F ANTERO MIDSTREAM COMMON STOCK 03676B102 217,418 4,512 2.12 1,609 -34.06 0.0125
2019-08-07 2019-06-30 13F ANTERO MIDSTREAM COMMON STOCK 03676B102 212,906 3,304 1.58 2,440 -15.51 0.0181
2019-05-01 2019-03-31 13F ANTERO MIDSTREAM COMMON STOCK 03676B102 209,602 -8,511,300 -97.60 2,888 -98.45 0.0204
2019-02-04 2018-12-31 13F ANTERO MIDSTREAM COMMON STOCK 03673L103 8,720,902 8,560,994 5,353.70 186,540 6,793.57 1.4476
2019-02-04 2018-12-31 13F ANTERO RESOURCES COMMON STOCK 03675Y103 185,243 -7,560,771 2,071 0.0161
2018-10-25 2018-09-30 13F ANTERO RESOURCES COMMON STOCK 03675Y103 159,908 98,686 161.19 2,706 134.29 0.0178
2018-10-25 2018-09-30 13F ANTERO MIDSTREAM COMMON STOCK 03673L103 7,746,014 451,249 222,001 1.4565
2018-08-02 2018-06-30 13F/A-2 Antero Resources Midstream Man COMMON STOCK 03675Y103 61,222 -5,428 -8.14 1,155 8.35 0.0075
2018-08-02 2018-06-30 13F/A-2 Antero Midstream Partners COMMON STOCK 03673L103 7,294,765 407,704 215,341 1.4046
2018-07-31 2018-06-30 13F/A-1 Antero Resources Midstream Man COMMON STOCK 03675Y103 38,311 -7,256,454 755 0.0048
2018-07-31 2018-06-30 13F/A-1 Antero Midstream Partners COMMON STOCK 03673L103 7,270,043 7,231,732 211,122 1.3499
2018-07-25 2018-06-30 13F Antero Resources Midstream Man COMMON STOCK 03675Y103 38,311 -28,339 755
2018-07-25 2018-06-30 13F Antero Midstream Partners COMMON STOCK 03673L103 7,270,043 382,982 211,122
2018-05-01 2018-03-31 13F Antero Resources Midstream Man COMMON STOCK 03675Y103 66,650 28,339 73.97 1,066 41.19 0.0085
2018-05-01 2018-03-31 13F Antero Midstream Partners COMMON STOCK 03673L103 6,887,061 -382,982 178,306 1.4189
2018-02-20 2017-12-31 13F/A-1 Antero Resources Midstream Man COMMON STOCK 03675Y103 38,311 -6,279,877 -99.39 755 -99.62 0.0052
2018-02-20 2017-12-31 13F/A-1 Antero Midstream Partners COMMON STOCK 03673L103 7,270,043 951,855 211,122 1.4616
2018-02-05 2017-12-31 13F Antero Resources Midstream Man COMMON STOCK 03675Y103 38,311 755
2018-02-05 2017-12-31 13F Antero Midstream Partners COMMON STOCK 03673L103 7,270,043 951,855 211,122
2017-11-03 2017-09-30 13F Antero Midstream Partners COMMON STOCK 03673L103 6,318,188 686,899 12.20 199,212 6.62 1.4118
2017-08-03 2017-06-30 13F Antero Midstream Partners COMMON STOCK 03673L103 5,631,289 197,826 3.64 186,846 7.75 1.3036
2017-05-12 2017-03-31 13F Antero Midstream Partners COMMON STOCK 03673L103 5,433,463 783,686 16.85 173,411 20.77 1.1958
2017-01-24 2016-12-31 13F Antero Midstream Partners Common Stock 03673L103 4,649,777 373,912 8.74 143,585 25.77 1.0588
2016-11-02 2016-09-30 13F Antero Midstream Common Stock 03673L103 4,275,865 98,114 2.35 114,166 -1.95 0.9318
2016-07-27 2016-06-30 13F Antero Midstream Common Stock 03673L103 4,177,751 249,160 6.34 116,434 34.05 1.0317
2016-05-10 2016-03-31 13F Antero Midstream Common Stock 03673L103 3,928,591 3,928,591 86,861 0.8969
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.