Antero Midstream Corporation
US ˙ NYSE ˙ US03676B1026

SecurityAM / Antero Midstream Corporation
InstitutionBlackRock, Inc.
Latest Disclosed Ownership38,375,721 shares
Ownership 8.00%
BlackRock, Inc. ownership in AM / Antero Midstream Corporation

2024-01-25 - BlackRock, Inc. has filed an SC 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 38,375,721 shares of Antero Midstream Corporation (US:AM). This represents 8.0 percent ownership of the company. In their previous filing dated 2023-02-03 , BlackRock, Inc. had reported owning 38,884,707 shares, indicating a decrease of -1.31 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date		Effective
Date		Form Prev
Shares		 Latest
Shares		 ΔShares
(Percent)		 Ownership
(Percent)		 ΔOwnership
(Percent)
2024-01-25 2024-01-25 13G/A 38,884,707 38,375,721 -1.31 8.00 -1.23
2023-02-03 2023-02-03 13G/A 30,173,928 38,884,707 28.87 8.10 28.57
2022-02-03 2022-02-03 13G/A 25,754,652 30,173,928 17.16 6.30 16.67
2021-01-29 2021-01-29 13G/A 25,694,944 25,754,652 0.23 5.40 5.88
2021-01-29 2021-01-29 13G/A 25,754,652 25,754,652 0.00 5.40 0.00
2020-02-07 2020-02-07 13G 25,694,944 5.10

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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)
2026-05-13 2026-03-31 13F ANTERO MIDSTREAM COM 03676B102 37,117,209 -2,073,375 -5.29 846,272 21.38 0.0011
2026-02-12 2025-12-31 13F ANTERO MIDSTREAM COM 03676B102 39,190,584 1,081,229 2.84 697,200 -5.89 0.0118
2025-11-12 2025-09-30 13F ANTERO MIDSTREAM COM 03676B102 38,109,355 139,116 0.37 740,846 2.96 0.0130
2025-08-12 2025-06-30 13F ANTERO MIDSTREAM COM 03676B102 37,970,239 -597,933 -1.55 719,536 3.65 0.0137
2025-05-02 2025-03-31 13F ANTERO MIDSTREAM COM 03676B102 38,568,172 -1,661,162 -4.13 694,227 14.36 0.0146
2025-02-07 2024-12-31 13F ANTERO MIDSTREAM COM 03676B102 40,229,334 1,673,706 4.34 607,061 4.62 0.0123
2024-11-13 2024-09-30 13F ANTERO MIDSTREAM COM 03676B102 38,555,628 -301,834 -0.78 580,262 1.31 0.0122
2024-08-13 2024-06-30 13F ANTERO MIDSTREAM COM 03676B102 38,857,462 477,024 1.24 572,759 6.14 0.0130
2024-05-10 2024-03-31 13F ANTERO MIDSTREAM COM 03676B102 38,380,438 4,717 0.01 539,629 12.22 0.0126
2024-02-13 2023-12-31 13F ANTERO MIDSTREAM COM 03676B102 38,375,721 -515,236 -1.32 480,848 3.21 0.0123
2023-11-13 2023-09-30 13F ANTERO MIDSTREAM COM 03676B102 38,890,957 664,058 1.74 465,914 5.07 0.0134
2023-08-11 2023-06-30 13F ANTERO MIDSTREAM COM 03676B102 38,226,899 460,065 1.22 443,432 11.93 0.0122
2023-05-12 2023-03-31 13F ANTERO MIDSTREAM COM 03676B102 37,766,834 -1,117,873 -2.87 396,174 -5.58 0.0117
2023-02-13 2022-12-31 13F ANTERO MIDSTREAM COM 03676B102 38,884,707 1,714,013 4.61 419,566 22.96 0.0131
2022-11-14 2022-09-30 13F ANTERO MIDSTREAM COM 03676B102 37,170,694 3,501,617 10.40 341,228 11.99 0.0116
2022-08-12 2022-06-30 13F ANTERO MIDSTREAM COM 03676B102 33,669,077 751,919 2.28 304,707 -14.84 0.0098
2022-05-12 2022-03-31 13F ANTERO MIDSTREAM COM 03676B102 32,917,158 2,743,230 9.09 357,809 22.50 0.0096
2022-02-10 2021-12-31 13F ANTERO MIDSTREAM COM 03676B102 30,173,928 -25,534 -0.08 292,084 -7.18 0.0074
2021-11-09 2021-09-30 13F ANTERO MIDSTREAM COM 03676B102 30,199,462 2,503,834 9.04 314,678 9.36 0.0088
2021-08-11 2021-06-30 13F ANTERO MIDSTREAM COM 03676B102 27,695,628 -574,430 -2.03 287,758 12.72 0.0080
2021-05-07 2021-03-31 13F ANTERO MIDSTREAM COM 03676B102 28,270,058 2,515,406 9.77 255,276 28.56 0.0075
2021-02-05 2020-12-31 13F ANTERO MIDSTREAM COM 03676B102 25,754,652 1,701,324 7.07 198,570 53.73 0.0063
2020-11-06 2020-09-30 13F ANTERO MIDSTREAM COM 03676B102 24,053,328 -372,499 -1.53 129,166 3.69 0.0048
2020-08-14 2020-06-30 13F ANTERO MIDSTREAM COM 03676B102 24,425,827 -120,760 -0.49 124,572 141.66 0.0050
2020-05-01 2020-03-31 13F ANTERO MIDSTREAM COM 03676B102 24,546,587 -1,148,357 -4.47 51,549 -73.57 0.0025
2020-02-13 2019-12-31 13F ANTERO MIDSTREAM COM 03676B102 25,694,944 3,421,971 15.36 195,024 18.33 0.0075
2019-11-08 2019-09-30 13F ANTERO MIDSTREAM COM 03676B102 22,272,973 9,779,865 78.28 164,820 15.12 0.0069
2019-08-22 2019-06-30 13F/A-1 ANTERO MIDSTREAM COM 03676B102 12,493,108 10,070,086 415.60 143,170 328.81 0.0061
2019-08-13 2019-06-30 13F ANTERO MIDSTREAM COM 03676B102 12,493,108 143,170
2019-05-09 2019-03-31 13F ANTERO MIDSTREAM COM 03676B102 2,423,022 1,725,415 247.33 33,388 123.75 0.0015
2019-02-08 2018-12-31 13F ANTERO MIDSTREAM PARTNERS UNT LTD PARTN 03673L103 697,607 82,131 13.34 14,922 -15.41 0.0008
2019-02-08 2018-12-31 13F ANTERO MIDSTREAM GP COM SHS REPSTG 03675Y103 335,285 -2,502 3,749 0.0002
2018-11-09 2018-09-30 13F ANTERO MIDSTREAM PARTNERS UNT LTD PARTN 03673L103 615,476 41,464 7.22 17,640 4.10 0.0008
2018-11-09 2018-09-30 13F ANTERO MIDSTREAM GP COM SHS REPSTG 03675Y103 337,787 14,923 5,714 0.0002
2018-08-09 2018-06-30 13F ANTERO MIDSTREAM PARTNERS UNT LTD PARTN 03673L103 574,012 0 0.00 16,945 14.02 0.0008
2018-08-09 2018-06-30 13F ANTERO MIDSTREAM GP COM SHS REPSTG 03675Y103 322,864 46,146 6,091 0.0003
2018-05-09 2018-03-31 13F ANTERO MIDSTREAM PARTNERS UNT LTD PARTN 03673L103 574,012 -69,635 -10.82 14,861 -20.50 0.0007
2018-05-09 2018-03-31 13F ANTERO MIDSTREAM GP COM SHS REPSTG 03675Y103 276,718 222,173 4,425 0.0002
2018-02-09 2017-12-31 13F ANTERO MIDSTREAM PARTNERS UNT LTD PARTN 03673L103 643,647 56,981 9.71 18,692 1.05 0.0009
2018-02-09 2017-12-31 13F ANTERO MIDSTREAM GP COM SHS REPSTG 03675Y103 54,545 -532,121 1,076 0.0001
2017-11-14 2017-09-30 13F ANTERO MIDSTREAM PARTNERS UNT LTD PARTN 03673L103 586,666 4,640 0.80 18,498 -4.21 0.0009
2017-08-10 2017-06-30 13F ANTERO MIDSTREAM PARTNERS UNT LTD PARTN 03673L103 582,026 150,677 34.93 19,312 35.02 0.0010
2017-05-12 2017-03-31 13F ANTERO MIDSTREAM PARTNERS UNT LTD PARTN 03673L103 431,349 431,349 14,303 0.0008
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.