Antero Resources Corporation
US ˙ NYSE ˙ US03674X1063

SecurityAR / Antero Resources Corporation
InstitutionAmalgamated Bank
Latest Disclosed Ownership133,277 shares
Latest Disclosed Value $ 5,656
Amalgamated Bank reports 0.13% decrease in ownership of AR / Antero Resources Corporation

On May 8, 2026 - Amalgamated Bank filed a 13F-HR form disclosing ownership of 133,277 shares of Antero Resources Corporation (US:AR) valued at $5,656,276 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 133,448 shares of Antero Resources Corporation. This represents a change in shares of -0.13% during the quarter. The current value of the position is $4,944,577 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 RESOURCES COM 03674X106 133,277 -171 -0.13 6 25.00 0.0433
2026-02-05 2025-12-31 13F ANTERO RESOURCES COM 03674X106 133,448 -350 -0.26 5 0.00 0.0332
2025-10-29 2025-09-30 13F ANTERO RESOURCES COM 03674X106 133,798 566 0.42 4 -20.00 0.0321
2025-08-04 2025-06-30 13F ANTERO RESOURCES COM 03674X106 133,232 -1,665 -1.23 5 0.00 0.0414
2025-04-25 2025-03-31 13F ANTERO RESOURCES COM 03674X106 134,897 -5,052 -3.61 5 25.00 0.0467
2025-02-04 2024-12-31 13F ANTERO RESOURCES COM 03674X106 139,949 552 0.40 5 33.33 0.0403
2024-10-30 2024-09-30 13F ANTERO RESOURCES COM 03674X106 139,397 -8,158 -5.53 4 -25.00 0.0329
2024-08-12 2024-06-30 13F ANTERO RESOURCES COM 03674X106 147,555 -44,613 -23.22 5 -20.00 0.0410
2024-04-23 2024-03-31 13F ANTERO RESOURCES COM 03674X106 192,168 16,375 9.31 6 66.67 0.0477
2024-02-06 2023-12-31 13F ANTERO RESOURCES COM 03674X106 175,793 -2,747 -1.54 4 -25.00 0.0318
2023-11-08 2023-09-30 13F ANTERO RESOURCES COM 03674X106 178,540 -2,583 -1.43 5 0.00 0.0386
2023-08-11 2023-06-30 13F ANTERO RESOURCES COM 03674X106 181,123 -19,092 -9.54 4 0.00 0.0338
2023-05-02 2023-03-31 13F ANTERO RESOURCES COM 03674X106 200,215 -10,924 -5.17 5 -33.33 0.0394
2023-02-10 2022-12-31 13F ANTERO RESOURCES COM 03674X106 211,139 149,665 243.46 7 -99.68 0.0584
2022-11-09 2022-09-30 13F ANTERO RESOURCES COM 03674X106 61,474 -16,917 -21.58 1,877 -21.89 0.0181
2022-08-15 2022-06-30 13F ANTERO RESOURCES COM 03674X106 78,391 41,907 114.86 2,403 115.71 0.0224
2022-08-25 2022-03-31 13F/A-1 ANTERO RESOURCES COM 03674X106 36,484 -832 -2.23 1,114 70.60 0.0087
2022-06-30 2022-03-31 13F ANTERO RESOURCES COM 03674X106 36,484 -832 1,114 0.0088
2022-02-15 2021-12-31 13F/A-1 ANTERO RESOURCES COM 03674X106 37,316 -357 -0.95 653 -7.90 0.0048
2022-02-15 2021-12-31 13F ANTERO RESOURCES COM 03674X106 37,316 -357 653 0.0048
2021-10-29 2021-09-30 13F ANTERO RESOURCES COM 03674X106 37,673 -2,649 -6.57 709 17.00 0.0060
2021-08-16 2021-06-30 13F ANTERO RESOURCES COM 03674X106 40,322 22,115 121.46 606 225.81 0.0049
2021-05-13 2021-03-31 13F ANTERO RESOURCES COM 03674X106 18,207 -1,299 -6.66 186 75.47 0.0070
2021-02-12 2020-12-31 13F ANTERO RESOURCES COM 03674X106 19,506 0 0.00 106 96.30 0.0040
2020-10-30 2020-09-30 13F ANTERO RESOURCES COM 03674X106 19,506 149 0.77 54 10.20 0.0023
2020-08-10 2020-06-30 13F ANTERO RESOURCES COM 03674X106 19,357 -37,200 -65.77 49 22.50 0.0023
2020-05-13 2020-03-31 13F ANTERO RESOURCES COM 03674X106 56,557 950 1.71 40 -74.68 0.0010
2020-02-13 2019-12-31 13F ANTERO RESOURCES COM 03674X106 55,607 4,699 9.23 158 2.60 0.0029
2019-11-13 2019-09-30 13F ANTERO RESOURCES COM 03674X106 50,908 -340 -0.66 154 -45.58 0.0032
2019-08-14 2019-06-30 13F ANTERO RESOURCES COM 03674X106 51,248 2,337 4.78 283 -34.49 0.0066
2019-05-15 2019-03-31 13F ANTERO RESOURCES COM 03674X106 48,911 1,050 2.19 432 -3.79 0.0105
2019-02-15 2018-12-31 13F ANTERO RESOURCES COM 03674X106 47,861 10,960 29.70 449 -31.35 0.0127
2018-11-14 2018-09-30 13F ANTERO RESOURCES COM 03674X106 36,901 -12,677 -25.57 654 -38.19 0.0162
2018-07-18 2018-06-30 13F ANTERO RESOURCES COM 03674X106 49,578 4,850 10.84 1,058 19.14 0.0259
2018-05-22 2018-03-31 13F ANTERO RESOURCES COM 03674X106 44,728 1,292 2.97 888 7.64 0.0236
2018-02-13 2017-12-31 13F ANTERO RESOURCES COM 03674X106 43,436 2,583 6.32 825 1.48 0.0223
2017-11-09 2017-09-30 13F ANTERO RESOURCES COM 03674X106 40,853 -713 -1.72 813 -9.47 0.0253
2017-08-10 2017-06-30 13F ANTERO RESOURCES COM 03674X106 41,566 41,566 898 0.0294
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.