Antero Resources Corporation
US ˙ NYSE ˙ US03674X1063

SecurityAR / Antero Resources Corporation
InstitutionCIBC Private Wealth Group, LLC
Latest Disclosed Ownership753,091 shares
Latest Disclosed Value $ 25,951,516
CIBC Private Wealth Group, LLC reports 17.53% decrease in ownership of AR / Antero Resources Corporation

On February 12, 2026 - CIBC Private Wealth Group, LLC filed a 13F-HR form disclosing ownership of 753,091 shares of Antero Resources Corporation (US:AR) valued at $25,951,516 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 24, 2025 disclosing 913,158 shares of Antero Resources Corporation. This represents a change in shares of -17.53% during the quarter. The current value of the position is $26,779,916 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)
2026-02-12 2025-12-31 13F ANTERO RESOURCES COM 03674X106 753,091 -160,067 -17.53 25,952 -15.32 0.0439
2025-11-24 2025-09-30 13F ANTERO RESOURCES COM 03674X106 913,158 645,424 241.07 30,646 184.17 0.0525
2025-08-12 2025-06-30 13F ANTERO RESOURCES COM 03674X106 267,734 -48,912 -15.45 10,784 5.64 0.0193
2025-05-14 2025-03-31 13F ANTERO RESOURCES COM 03674X106 316,646 -49,972 -13.63 10,209 -26.46 0.0216
2025-02-12 2024-12-31 13F Antero Resources COM 03674X106 366,618 116,362 46.50 13,880 93.61 0.0252
2024-11-13 2024-09-30 13F Antero Resources COM 03674X106 250,256 250,152 240,530.77 7,170 238,866.67 0.0128
2024-08-09 2024-06-30 13F Antero Resources COM 03674X106 104 -4,445 -97.71 3 -97.74 0.0000
2024-05-10 2024-03-31 13F Antero Resources COM 03674X106 4,549 4,549 134 0.0003
2023-11-13 2023-09-30 13F ANTERO RESOURCES CORP COM COM 03674X106 0 -256,720 -100.00 0 -100.00
2023-11-21 2023-06-30 13F/A-1 ANTERO RESOURCES CORP COM COM 03674X106 256,720 150,000 140.55 5,912 139.94 0.0129
2023-08-10 2023-06-30 13F ANTERO RESOURCES CORP COM COM 03674X106 256,720 150,000 5,912 0.0129
2023-11-21 2023-03-31 13F/A-1 ANTERO RES CORP COM COM 03674X106 106,720 106,720 2,464 0.0055
2023-05-12 2023-03-31 13F ANTERO RES CORP COM COM 03674X106 106,720 106,720 2,464 0.0054
2019-07-31 2019-06-30 13F ANTERO RES COM 03674X106 0 -500,174 -100.00 0 -100.00
2019-05-10 2019-03-31 13F ANTERO RES COM 03674X106 500,174 -42 -0.01 4,417 -5.96 0.0170
2019-02-05 2018-12-31 13F ANTERO RES COM 03674X106 500,216 500,216 4,697 0.0209
2018-02-12 2017-12-31 13F ANTERO RES CORP COM COM 03674X106 0 -466,136 -100.00 0 -100.00
2017-12-21 2017-09-30 13F/A-1 ANTERO RES CORP COM COM 03674X106 466,136 150,062 47.48 9,276 35.81 0.0423
2017-11-14 2017-09-30 13F ANTERO RES CORP COM COM 03674X106 466,136 150,062 9,276
2017-08-09 2017-06-30 13F ANTERO RES CORP COM Com 03674X106 316,074 316,074 6,830 0.0429
2016-08-11 2016-06-30 13F ANTERO RES CORP COM Com 03674X106 0 -10,167,013 -100.00 0 -100.00
2016-05-11 2016-03-31 13F ANTERO RES CORP COM Com 03674X106 10,167,013 10,167,013 0.00 252,854 1.9539
2015-08-13 2015-06-30 13F ANTERO RES CORP COM Com 03674X106 0 -75,000 -100.00 0 -100.00
2015-05-11 2015-03-31 13F ANTERO RES CORP COM Com 03674X106 75,000 75,000 2,649 0.0196
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.