Antero Resources Corporation
US ˙ NYSE ˙ US03674X1063

SecurityAR / Antero Resources Corporation
InstitutionMorgan Stanley
Latest Disclosed Ownership3,577,596 shares
Latest Disclosed Value $ 151,833,240
Morgan Stanley reports 4.67% increase in ownership of AR / Antero Resources Corporation

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 3,577,596 shares of Antero Resources Corporation (US:AR) valued at $151,833,174 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 3,417,825 shares of Antero Resources Corporation. This represents a change in shares of 4.67% during the quarter. The current value of the position is $130,689,582 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 3,577,596 159,771 4.67 151,833 28.91 0.0091
2026-05-27 2025-12-31 13F/A-1 ANTERO RESOURCES COM 03674X106 3,417,825 -441,756 -11.45 117,778 -9.07 0.0070
2026-02-13 2025-12-31 13F ANTERO RESOURCES COM 03674X106 3,417,825 -441,756 117,778 0.0070
2026-05-27 2025-09-30 13F/A-1 ANTERO RESOURCES COM 03674X106 3,859,581 -1,075,805 -21.80 129,528 -34.84 0.0078
2025-11-14 2025-09-30 13F ANTERO RESOURCES COM 03674X106 3,859,581 -1,075,805 129,528 0.0078
2025-08-15 2025-06-30 13F ANTERO RESOURCES COM 03674X106 4,935,386 -363,087 -6.85 198,797 -7.22 0.0130
2025-05-15 2025-03-31 13F ANTERO RESOURCES COM 03674X106 5,298,473 1,636,825 44.70 214,270 66.95 0.0153
2025-05-15 2024-12-31 13F/A-1 ANTERO RESOURCES COM 03674X106 3,661,648 420,961 12.99 128,341 38.23 0.0090
2025-02-14 2024-12-31 13F ANTERO RESOURCES COM 03674X106 3,661,648 420,961 128,341 0.0090
2025-05-14 2024-09-30 13F/A-2 ANTERO RESOURCES COM 03674X106 3,240,687 -95,232 -2.85 92,846 -14.70 0.0067
2025-02-14 2024-09-30 13F/A-1 ANTERO RESOURCES COM 03674X106 3,240,687 -95,232 92,846 0.0067
2024-11-14 2024-09-30 13F ANTERO RESOURCES COM 03674X106 3,240,687 -95,232 92,846 0.0067
2025-05-14 2024-06-30 13F/A-2 ANTERO RESOURCES COM 03674X106 3,335,919 -111,261 -3.23 108,851 8.89 0.0084
2024-10-17 2024-06-30 13F/A-1 ANTERO RESOURCES COM 03674X106 3,335,919 -111,261 108,851 0.0084
2024-08-14 2024-06-30 13F ANTERO RESOURCES COM 03674X106 3,335,919 -111,261 108,851 0.0084
2024-10-17 2024-03-31 13F/A-2 ANTERO RESOURCES COM 03674X106 3,447,180 -954,423 -21.68 99,968 0.14 0.0080
2024-08-16 2024-03-31 13F/A-1 ANTERO RESOURCES COM 03674X106 3,447,180 -954,423 99,968 0.0009
2024-05-15 2024-03-31 13F ANTERO RESOURCES COM 03674X106 3,447,180 -954,423 99,968 0.0080
2024-08-16 2023-12-31 13F/A-1 ANTERO RESOURCES COM 03674X106 4,401,603 1,030,640 30.57 99,828 16.68 0.0088
2024-02-13 2023-12-31 13F ANTERO RESOURCES COM 03674X106 4,401,603 1,030,640 99,828 0.0088
2023-11-15 2023-09-30 13F ANTERO RESOURCES COM 03674X106 3,370,963 -117,516 -3.37 85,555 6.49 0.0087
2023-08-14 2023-06-30 13F ANTERO RESOURCES COM 03674X106 3,488,479 240,882 7.42 80,340 7.14 0.0079
2023-05-15 2023-03-31 13F ANTERO RESOURCES COM 03674X106 3,247,597 178,635 5.82 74,987 -21.16 0.0080
2023-02-14 2022-12-31 13F ANTERO RESOURCES COM 03674X106 3,068,962 1,798,519 141.57 95,107 145.20 0.0108
2022-11-14 2022-09-30 13F ANTERO RESOURCES COM 03674X106 1,270,443 -25,847 -1.99 38,787 -2.38 0.0053
2022-10-27 2022-06-30 13F/A-1 ANTERO RESOURCES COM 03674X106 1,296,290 -735,986 -36.21 39,732 -35.96 0.0052
2022-08-15 2022-06-30 13F ANTERO RESOURCES COM 03674X106 1,296,290 -735,986 39,732 0.0052
2022-10-27 2022-03-31 13F/A-1 ANTERO RESOURCES COM 03674X106 2,032,276 -157,758 -7.20 62,046 61.89 0.0084
2022-05-13 2022-03-31 13F ANTERO RESOURCES COM 03674X106 2,032,276 -157,758 62,046 0.0084
2022-02-14 2021-12-31 13F ANTERO RESOURCES COM 03674X106 2,190,034 676,745 44.72 38,326 34.65 0.0047
2021-11-15 2021-09-30 13F ANTERO RESOURCES COM 03674X106 1,513,289 -1,195,320 -44.13 28,464 -30.08 0.0038
2021-08-23 2021-06-30 13F/A-1 ANTERO RESOURCES COM 03674X106 2,708,609 598,034 28.34 40,710 89.10 0.0054
2021-08-16 2021-06-30 13F ANTERO RESOURCES COM 03674X106 2,708,609 598,034 40,710 0.0011
2021-05-17 2021-03-31 13F ANTERO RESOURCES COM 03674X106 2,110,575 -1,346 -0.06 21,528 87.02 0.0032
2021-02-16 2020-12-31 13F ANTERO RESOURCES COM 03674X106 2,111,921 -1,877,141 -47.06 11,511 4.94 0.0018
2020-11-13 2020-09-30 13F ANTERO RESOURCES COM 03674X106 3,989,062 960,004 31.69 10,969 42.58 0.0021
2020-08-14 2020-06-30 13F ANTERO RESOURCES COM 03674X106 3,029,058 2,800,788 1,226.96 7,693 4,590.85 0.0017
2020-05-26 2020-03-31 13F/A-1 ANTERO RESOURCES COM 03674X106 228,270 -249,628 -52.23 164 -87.95 0.0000
2020-05-15 2020-03-31 13F ANTERO RESOURCES COM 03674X106 228,270 -249,628 164 12.5986
2020-02-14 2019-12-31 13F ANTERO RES COM 03674X106 477,898 -44,579 -8.53 1,361 -13.70 0.0003
2019-11-14 2019-09-30 13F ANTERO RES COM 03674X106 522,477 -9,683 -1.82 1,577 -46.42 0.0004
2019-08-14 2019-06-30 13F ANTERO RES COM 03674X106 532,160 -21,983 -3.97 2,943 -39.87 0.0008
2019-05-15 2019-03-31 13F ANTERO RES COM 03674X106 554,143 363,049 189.98 4,894 172.65 0.0014
2019-02-14 2018-12-31 13F ANTERO RES COM 03674X106 191,094 -755,621 -79.82 1,795 -89.29 0.0005
2019-04-23 2018-09-30 13F/A-2 ANTERO RES COM 03674X106 946,715 115,844 13.94 16,766 -5.49 0.0042
2018-11-20 2018-09-30 13F/A-1 ANTERO RES COM 03674X106 946,715 0 16,766 0.0042
2018-11-14 2018-09-30 13F ANTERO RES COM 03674X106 946,715 115,844 16,766
2019-04-23 2018-06-30 13F/A-1 ANTERO RES COM 03674X106 830,871 -580,064 -41.11 17,739 -36.66 0.0048
2018-08-14 2018-06-30 13F ANTERO RES COM 03674X106 830,871 -580,064 17,739
2019-04-23 2018-03-31 13F/A-1 ANTERO RES COM 03674X106 1,410,935 864,284 158.11 28,008 169.64 0.0078
2018-05-14 2018-03-31 13F ANTERO RES COM 03674X106 1,410,935 864,284 28,008
2019-04-23 2017-12-31 13F/A-1 ANTERO RES COM 03674X106 546,651 -10,098 -1.81 10,387 -6.25 0.0028
2018-02-14 2017-12-31 13F ANTERO RES COM 03674X106 546,651 -10,098 10,387
2017-11-14 2017-09-30 13F ANTERO RES COM 03674X106 556,749 8,906 1.63 11,080 -6.42 0.0033
2017-08-11 2017-06-30 13F ANTERO RES COM 03674X106 547,843 -393,363 -41.79 11,840 -44.85 0.0036
2017-05-22 2017-03-31 13F/A-1 ANTERO RES COM 03674X106 941,206 486,687 107.08 21,470 99.74 0.0066
2017-05-12 2017-03-31 13F ANTERO RES COM 03674X106 941,206 21,470
2017-02-22 2016-12-31 13F/A-1 ANTERO RES COM 03674X106 454,519 -1,043,607 -69.66 10,749 -73.38 0.0035
2017-02-13 2016-12-31 13F ANTERO RES COM 03674X106 454,519 10,749
2016-11-10 2016-09-30 13F ANTERO RES COM 03674X106 1,498,126 126,101 9.19 40,375 13.27 0.0138
2016-08-12 2016-06-30 13F ANTERO RES COM 03674X106 1,372,025 1,185,671 636.25 35,645 669.21 0.0129
2016-05-12 2016-03-31 13F ANTERO RES COM 03674X106 186,354 -31,565 -14.48 4,634 -2.46 0.0018
2016-02-09 2015-12-31 13F ANTERO RES COM 03674X106 217,919 183,014 524.32 4,751 543.77 0.0017
2016-02-08 2015-09-30 13F/A-1 ANTERO RES COM 03674X106 34,905 -74,266 -68.03 738 -80.31 0.0003
2015-11-09 2015-09-30 13F ANTERO RES COM 03674X106 34,905 738
2015-08-12 2015-06-30 13F ANTERO RES COM 03674X106 109,171 5,569 5.38 3,748 2.43 0.0013
2015-05-14 2015-03-31 13F ANTERO RES COM 03674X106 103,602 -159,135 -60.57 3,659 -65.68 0.0013
2015-02-13 2014-12-31 13F ANTERO RES COM 03674X106 262,737 255,825 3,701.17 10,662 2,720.63 0.0039
2014-12-16 2014-09-30 13F/A-1 ANTERO RES COM 03674X106 6,912 -16,739 -70.78 378 -75.64 0.0001
2014-11-14 2014-09-30 13F ANTERO RES COM 03674X106 6,912 378
2014-08-12 2014-06-30 13F ANTERO RES COM 03674X106 23,651 -67,279 -73.99 1,552 -72.73 0.0027
2014-05-13 2014-03-31 13F ANTERO RES COM 03674X106 90,930 90,276 13,803.67 5,692 13,782.93 0.0024
2014-02-13 2013-12-31 13F ANTERO RES COM 03674X106 654 654 41 0.0000
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.