Antero Midstream Corporation
US ˙ NYSE ˙ US03676B1026

SecurityAM / Antero Midstream Corporation
InstitutionNeuberger Berman Group LLC
Latest Disclosed Ownership5,757,560 shares
Ownership 3.08%
Neuberger Berman Group LLC ownership in AM / Antero Midstream Corporation

2018-02-15 - Neuberger Berman Group LLC has filed an SC 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 5,757,560 shares of Antero Midstream Corporation (US:AM). This represents 3.08 percent ownership of the company. In their previous filing dated 2017-02-14 , Neuberger Berman Group LLC had reported owning 5,182,743 shares, indicating an increase of 11.09 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)
2018-02-15 2018-02-15 13G/A 5,182,743 5,757,560 11.09 3.08 -39.73
2017-02-14 2017-02-14 13G 5,182,743 5.11

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)
2026-05-14 2026-03-31 13F ANTERO MIDSTREAM Common 03676B102 7,272,626 -164,626 -2.21 165,828 25.33 0.1262
2026-02-13 2025-12-31 13F ANTERO MIDSTREAM Common 03676B102 7,437,252 57,675 0.78 132,311 -7.77 0.0985
2025-11-12 2025-09-30 13F ANTERO MIDSTREAM Common 03676B102 7,379,577 -21,502 -0.29 143,460 2.29 0.1048
2025-08-25 2025-06-30 13F/A-1 ANTERO MIDSTREAM Common 03676B102 7,401,079 104,710 1.44 140,249 6.79 0.1079
2025-08-13 2025-06-30 13F ANTERO MIDSTREAM Common 03676B102 7,401,079 104,710 140,249 0.0558
2025-05-13 2025-03-31 13F ANTERO MIDSTREAM Common 03676B102 7,296,369 23,839 0.33 131,331 19.67 0.1100
2025-02-13 2024-12-31 13F ANTERO MIDSTREAM Common 03676B102 7,272,530 -7,434 -0.10 109,742 0.16 0.0871
2024-11-14 2024-09-30 13F ANTERO MIDSTREAM Common 03676B102 7,279,964 812,266 12.56 109,563 14.93 0.0855
2024-11-14 2024-06-30 13F/A-1 ANTERO MIDSTREAM Common 03676B102 6,467,698 93,890 1.47 95,334 6.38 0.0783
2024-08-13 2024-06-30 13F ANTERO MIDSTREAM Common 03676B102 6,467,698 93,890 95,334 0.0782
2024-11-14 2024-03-31 13F/A-1 ANTERO MIDSTREAM Common 03676B102 6,373,808 -230,316 -3.49 89,616 8.30 0.0741
2024-05-13 2024-03-31 13F ANTERO MIDSTREAM Common 03676B102 6,373,808 -230,316 89,616 0.0741
2024-11-14 2023-12-31 13F/A-2 ANTERO MIDSTREAM Common 03676B102 6,604,124 -149,383 -2.21 82,750 2.28 0.0722
2024-02-09 2023-12-31 13F ANTERO MIDSTREAM Common 03676B102 6,604,124 -149,383 82,750 0.0722
2023-11-14 2023-09-30 13F ANTERO MIDSTREAM Common 03676B102 6,753,507 -306,107 -4.34 80,907 -1.20 0.0737
2023-08-11 2023-06-30 13F ANTERO MIDSTREAM Common 03676B102 7,059,614 22,978 0.33 81,892 10.94 0.0732
2023-05-12 2023-03-31 13F ANTERO MIDSTREAM Common 03676B102 7,036,636 -91,508 -1.28 73,814 -4.03 0.0685
2023-02-13 2022-12-31 13F ANTERO MIDSTREAM Common 03676B102 7,128,144 -1,710 -0.02 76,913 17.51 0.0754
2022-11-15 2022-09-30 13F ANTERO MIDSTREAM Common 03676B102 7,129,854 1,315,939 22.63 65,452 24.40 0.0683
2022-08-15 2022-06-30 13F ANTERO MIDSTREAM Common 03676B102 5,813,915 1,253,992 27.50 52,616 6.15 0.0529
2022-05-23 2022-03-31 13F/A-1 ANTERO MIDSTREAM Common 03676B102 4,559,923 692,141 17.90 49,566 32.44 0.0420
2022-05-13 2022-03-31 13F ANTERO MIDSTREAM Common 03676B102 4,559,923 692,141 49,551 0.0221
2022-02-11 2021-12-31 13F ANTERO MIDSTREAM Common 03676B102 3,867,782 274,448 7.64 37,426 -0.01 0.0294
2021-11-12 2021-09-30 13F ANTERO MIDSTREAM Common 03676B102 3,593,334 941,089 35.48 37,429 35.88 0.0327
2021-08-13 2021-06-30 13F ANTERO MIDSTREAM Common 03676B102 2,652,245 1,138,847 75.25 27,545 101.69 0.0240
2021-05-13 2021-03-31 13F ANTERO MIDSTREAM Common 03676B102 1,513,398 1,293,529 588.32 13,657 709.54 0.0130
2021-02-10 2020-12-31 13F ANTERO MIDSTREAM Common 03676B102 219,869 -304,405 -58.06 1,687 -40.07 0.0017
2020-11-12 2020-09-30 13F ANTERO MIDSTREAM Common 03676B102 524,274 343,865 190.60 2,815 205.98 0.0033
2020-08-13 2020-06-30 13F ANTERO MIDSTREAM Common 03676B102 180,409 -16,998 -8.61 920 121.69 0.0011
2020-05-14 2020-03-31 13F ANTERO MIDSTREAM Common 03676B102 197,407 -472,282 -70.52 415 -91.84 0.0006
2020-02-12 2019-12-31 13F ANTERO MIDSTREAM Common 03676B102 669,689 83,740 14.29 5,083 17.23 0.0059
2019-11-13 2019-09-30 13F ANTERO MIDSTREAM Common 03676B102 585,949 -13,504,311 -95.84 4,336 -97.31 0.0053
2019-08-13 2019-06-30 13F ANTERO MIDSTREAM Common 03676B102 14,090,260 -4,910,148 -25.84 161,474 -38.33 0.1931
2019-05-13 2019-03-31 13F ANTERO MIDSTREAM Common 03676B102 19,000,408 11,896,869 167.48 261,825 229.68 0.3208
2019-02-12 2018-12-31 13F ANTERO MIDSTREAM GP Common 03675Y103 7,103,539 1,772,518 33.25 79,417 -11.96 0.1107
2019-02-12 2018-12-31 13F ANTERO RESOURCES MIDSTREAM UNITS UNIT COMMON 03673L103 6,203,177 386,770 132,686 0.1850
2018-11-16 2018-09-30 13F/A-1 ANTERO MIDSTREAM GP Common 03675Y103 5,331,021 -784,128 -12.82 90,201 -50.03 0.1022
2018-11-16 2018-09-30 13F/A-1 ANTERO RESOURCES MIDSTREAM UNITS UNIT COMMON 03673L103 5,816,407 1,710,613 166,698 0.1889
2018-11-13 2018-09-30 13F ANTERO MIDSTREAM GP Common 03675Y103 5,331,021 1,225,227 90,201
2018-11-13 2018-09-30 13F ANTERO RESOURCES MIDSTREAM UNITS UNIT COMMON 03673L103 5,816,407 -298,742 166,698
2018-08-13 2018-06-30 13F ANTERO RESOURCES MIDSTREAM UNITS MLP COMMON 03673L103 6,115,149 -166,274 -2.65 180,519 11.00 0.1993
2018-08-13 2018-06-30 13F ANTERO MIDSTREAM GP Common 03675Y103 4,105,794 2,381,390 77,436 0.0855
2018-05-08 2018-03-31 13F ANTERO RESOURCES MIDSTREAM UNITS MLP Common 03673L103 6,281,423 6,184,139 6,356.79 162,626 8,378.94 0.1858
2018-05-08 2018-03-31 13F ANTERO MIDSTREAM GP Common 03675Y103 1,724,404 -4,033,156 27,573 0.0315
2018-02-14 2017-12-31 13F ANTERO MIDSTREAM GP Common 03675Y103 97,284 81,874 531.30 1,918 508.89 0.0022
2018-02-14 2017-12-31 13F ANTERO RESOURCES MIDSTREAM UNITS MLP COMMON 03673L103 5,757,560 251,256 167,199 0.1922
2017-11-15 2017-09-30 13F ANTERO RESOURCES MIDSTREAM M COMMON STOCK 03675Y103 15,410 -7,190 -31.81 315 -36.62 0.0004
2017-11-15 2017-09-30 13F ANTERO MIDSTREAM PARTNERS COMMON STOCK 03673L103 5,506,304 147,744 173,614 0.2172
2017-08-08 2017-06-30 13F ANTERO RESOURCES MIDSTREAM M COMMON STOCK 03675Y103 22,600 -5,279,314 -99.57 497 -99.72 0.0006
2017-08-08 2017-06-30 13F ANTERO MIDSTREAM PARTNERS COMMON STOCK 03673L103 5,358,560 56,646 177,797 0.2283
2017-05-10 2017-03-31 13F ANTERO MIDSTREAM PARTNERS COMMON STOCK 03673L103 5,301,914 119,171 2.30 175,811 9.85 0.2269
2017-02-06 2016-12-31 13F ANTERO MIDSTREAM PARTNERS COMMON STOCK 03673L103 5,182,743 526,345 11.30 160,043 28.73 0.2149
2016-11-02 2016-09-30 13F ANTERO MIDSTREAM PARTNERS COMMON STOCK 03673L103 4,656,398 1,251,090 36.74 124,326 31.00 0.1687
2016-08-05 2016-06-30 13F ANTERO MIDSTREAM PARTNERS COMMON STOCK 03673L103 3,405,308 3,405,308 0.00 94,906 0.1308
2015-07-31 2015-06-30 13F ANTERO MIDSTREAM PARTNERS COMMON STOCK 03673L103 0 -16,800 -100.00 0 -100.00
2015-05-06 2015-03-31 13F ANTERO MIDSTREAM PARTNERS COMMON STOCK 03673L103 16,800 16,800 406 0.0004
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.