Antero Resources Corporation
US ˙ NYSE ˙ US03674X1063

SecurityAR / Antero Resources Corporation
InstitutionLazard Asset Management Llc
Latest Disclosed Ownership733,422 shares
Latest Disclosed Value $ 31,126,430
Lazard Asset Management Llc reports 427.38% increase in ownership of AR / Antero Resources Corporation

On May 15, 2026 - Lazard Asset Management Llc filed a 13F-HR form disclosing ownership of 733,422 shares of Antero Resources Corporation (US:AR) valued at $31,126,430 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 139,070 shares of Antero Resources Corporation. This represents a change in shares of 427.38% during the quarter. The current value of the position is $26,080,486 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 733,422 594,352 427.38 31,126 549.54 0.0267
2026-02-17 2025-12-31 13F ANTERO RESOURCES COM 03674X106 139,070 -22,501 -13.93 4,792 -11.62 0.0081
2025-11-14 2025-09-30 13F ANTERO RESOURCES COM 03674X106 161,571 436 0.27 5,422 90,266.67 0.0073
2025-08-14 2025-06-30 13F ANTERO RESOURCE Common Stock 03674X106 161,135 -133,208 -45.26 6 -45.45 0.0089
2025-05-15 2025-03-31 13F ANTERO RESOURCE Common Stock 03674X106 294,343 -206,707 -41.25 12 -35.29 0.0183
2025-02-14 2024-12-31 13F ANTERO RESOURCE Common Stock 03674X106 501,050 -78,901 -13.60 18 6.25 0.0257
2024-11-14 2024-09-30 13F ANTERO RESOURCE Common Stock 03674X106 579,951 109,182 23.19 17 6.67 0.0222
2024-08-14 2024-06-30 13F ANTERO RESOURCE Common Stock 03674X106 470,769 -336,382 -41.68 15 -34.78 0.0193
2024-07-09 2024-03-31 13F/A-1 ANTERO RESOURCE Common Stock 03674X106 807,151 -710,582 -46.82 23 -32.35 0.0285
2024-05-14 2024-03-31 13F ANTERO RESOURCE Common Stock 03674X106 807,151 -710,582 23 0.0284
2024-02-14 2023-12-31 13F ANTERO RESOURCE Common Stock 03674X106 1,517,733 680,640 81.31 34 61.90 0.0435
2023-11-14 2023-09-30 13F ANTERO RESOURCE Common Stock 03674X106 837,093 91,698 12.30 21 23.53 0.0289
2023-08-15 2023-06-30 13F ANTERO RESOURCE Common Stock 03674X106 745,395 7,111 0.96 17 0.00 0.0211
2023-05-15 2023-03-31 13F ANTERO RESOURCE Common Stock 03674X106 738,284 -546,041 -42.52 17 -99.96 0.0223
2023-02-15 2022-12-31 13F ANTERO RESOURCE Common Stock 03674X106 1,284,325 319,840 33.16 39,801 35.17 0.0548
2022-11-14 2022-09-30 13F ANTERO RESOURCE Common Stock 03674X106 964,485 -170,212 -15.00 29,445 -15.33 0.0430
2022-08-09 2022-06-30 13F ANTERO RESOURCE Common Stock 03674X106 1,134,697 211,170 22.87 34,778 23.35 0.0470
2022-05-13 2022-03-31 13F ANTERO RESOURCE Common Stock 03674X106 923,527 576,403 166.05 28,195 364.19 0.0327
2022-02-09 2021-12-31 13F ANTERO RESOURCE Common Stock 03674X106 347,124 308,067 788.76 6,074 727.52 0.0065
2021-11-15 2021-09-30 13F ANTERO RESOURCE Common Stock 03674X106 39,057 39,057 734 0.0008
2019-08-19 2017-06-30 13F/A-1 ANTERO RESOURCE Common Stock 03674X106 0 -318,638 -100.00 0 -100.00
2019-08-13 2017-03-31 13F/A-1 ANTERO RESOURCE Common Stock 03674X106 318,638 -393,950 -55.28 7,268 -56.87 0.0137
2017-05-12 2017-03-31 13F ANTERO RESOURCE Common Stock 03674X106 318,377 -393,650 7,262
2019-07-30 2016-12-31 13F/A-1 ANTERO RESOURCE Common Stock 03674X106 712,588 156,680 28.18 16,852 12.49 0.0344
2017-02-13 2016-12-31 13F ANTERO RESOURCE Common Stock 03674X106 712,027 156,577 16,839
2019-08-07 2016-09-30 13F/A-1 ANTERO RESOURCE Common Stock 03674X106 555,908 555,908 14,981 0.0298
2016-11-14 2016-09-30 13F ANTERO RESOURCE Common Stock 03674X106 555,450 14,969
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.