Antero Resources Corporation
US ˙ NYSE ˙ US03674X1063

SecurityAR / Antero Resources Corporation
InstitutionEngineers Gate Manager LP
Latest Disclosed Ownership84,452 shares
Latest Disclosed Value $ 3,584,143
Engineers Gate Manager LP reports 53.77% increase in ownership of AR / Antero Resources Corporation

On May 15, 2026 - Engineers Gate Manager LP filed a 13F-HR form disclosing ownership of 84,452 shares of Antero Resources Corporation (US:AR) valued at $3,584,143 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 54,920 shares of Antero Resources Corporation. This represents a change in shares of 53.77% during the quarter. The current value of the position is $3,085,032 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)
2026-05-15 2026-03-31 13F ANTERO RESOURCES COM 03674X106 84,452 29,532 53.77 3,584 89.43 0.0448
2026-02-17 2025-12-31 13F ANTERO RESOURCES COM 03674X106 54,920 -99,225 -64.37 1,893 -63.43 0.0224
2025-11-14 2025-09-30 13F ANTERO RESOURCES COM 03674X106 154,145 51,871 50.72 5,173 25.59 0.0592
2025-08-14 2025-06-30 13F ANTERO RESOURCES COM 03674X106 102,274 62,058 154.31 4,120 153.32 0.0513
2025-05-15 2025-03-31 13F ANTERO RESOURCES COM 03674X106 40,216 23,485 140.37 1,626 177.47 0.0274
2025-02-14 2024-12-31 13F ANTERO RESOURCES COM 03674X106 16,731 -14,695 -46.76 586 -34.89 0.0102
2024-11-14 2024-09-30 13F ANTERO RESOURCES COM 03674X106 31,426 16,130 105.45 900 80.36 0.0176
2024-08-14 2024-06-30 13F ANTERO RESOURCES COM 03674X106 15,296 15,296 499 0.0113
2024-02-14 2023-12-31 13F ANTERO RESOURCES COM 03674X106 0 -72,384 -100.00 0 -100.00
2023-11-14 2023-09-30 13F ANTERO RESOURCES COM 03674X106 72,384 -12,582 -14.81 1,837 -6.08 0.0679
2023-08-14 2023-06-30 13F ANTERO RESOURCES COM 03674X106 84,966 62,610 280.06 1,957 279.07 0.0740
2023-05-15 2023-03-31 13F ANTERO RESOURCES COM 03674X106 22,356 -73,300 -76.63 516 -82.59 0.0216
2023-02-14 2022-12-31 13F ANTERO RESOURCES COM 03674X106 95,656 69,783 269.71 2,964 275.19 0.1781
2022-11-14 2022-09-30 13F ANTERO RESOURCES COM 03674X106 25,873 -124,407 -82.78 790 -82.85 0.0491
2022-08-15 2022-06-30 13F ANTERO RESOURCES COM 03674X106 150,280 81,883 119.72 4,606 120.59 0.1688
2022-05-16 2022-03-31 13F ANTERO RESOURCES COM 03674X106 68,397 -21,183 -23.65 2,088 33.16 0.0817
2022-02-14 2021-12-31 13F ANTERO RESOURCES COM 03674X106 89,580 64,126 251.93 1,568 227.35 0.0705
2021-11-15 2021-09-30 13F ANTERO RESOURCES COM 03674X106 25,454 -47,116 -64.92 479 -56.10 0.0273
2021-08-16 2021-06-30 13F ANTERO RESOURCES COM 03674X106 72,570 -46,478 -39.04 1,091 -10.13 0.0702
2021-05-17 2021-03-31 13F ANTERO RESOURCES COM 03674X106 119,048 -72,504 -37.85 1,214 16.28 0.0601
2021-02-16 2020-12-31 13F ANTERO RESOURCES COM 03674X106 191,552 191,552 1,044 0.0453
2020-11-16 2020-09-30 13F ANTERO RESOURCES COM 03674X106 0 -35,400 -100.00 0 -100.00
2020-08-17 2020-06-30 13F ANTERO RESOURCES COM 03674X106 35,400 35,400 90 0.0046
2019-11-14 2019-09-30 13F ANTERO RES COM 03674X106 0 -23,900 -100.00 0 -100.00
2019-08-14 2019-06-30 13F ANTERO RES COM 03674X106 23,900 -232,432 -90.68 132 -94.17 0.0073
2019-05-15 2019-03-31 13F ANTERO RES COM 03674X106 256,332 256,332 2,263 0.1370
2017-05-05 2017-03-31 13F ANTERO RES COM 03674X106 0 -28,500 -100.00 0 -100.00
2017-02-10 2016-12-31 13F ANTERO RES COM 03674X106 28,500 28,500 674 0.0723
2016-11-09 2016-09-30 13F ANTERO RES COM 03674X106 0 -12,700 -100.00 0 -100.00
2016-08-11 2016-06-30 13F ANTERO RES COM 03674X106 12,700 -40,864 -76.29 330 -75.23 0.0237
2016-05-09 2016-03-31 13F ANTERO RES COM 03674X106 53,564 27,363 104.43 1,332 133.27 0.1039
2016-02-05 2015-12-31 13F ANTERO RES COM 03674X106 26,201 26,201 0.00 571 0.0386
2015-08-14 2015-06-30 13F ANTERO RES COM 03674X106 0 -10,579 -100.00 0 -100.00
2015-05-15 2015-03-31 13F ANTERO RES COM 03674X106 10,579 10,579 374 0.0497
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.