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US ˙ NYSE ˙ US03674X1063

SecurityAR / Antero Resources Corporation
InstitutionMackenzie Financial Corp
Latest Disclosed Ownership18,547 shares
Latest Disclosed Value $ 787,135
Mackenzie Financial Corp ownership in AR / Antero Resources Corporation

On May 13, 2026 - Mackenzie Financial Corp filed a 13F-HR form disclosing ownership of 18,547 shares of Antero Resources Corporation (US:AR) valued at $787,135 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 2, 2025 disclosing 0 shares of Antero Resources Corporation. The current value of the position is $688,094 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)
2026-05-13 2026-03-31 13F ANTERO RESOURCES COM 03674X106 18,547 18,547 787 0.0009
2025-05-02 2024-12-31 13F/A-2 ANTERO RESOURCES COM 03674X106 0 -58,000 -100.00 0 -100.00
2025-02-20 2024-12-31 13F/A-1 ANTERO RESOURCES COM 03674X106 0 0
2025-02-14 2024-12-31 13F ANTERO RESOURCES COM 03674X106 0 0
2024-11-13 2024-09-30 13F ANTERO RESOURCES COM 03674X106 58,000 58,000 1,662 0.0023
2024-08-14 2024-06-30 13F ANTERO RESOURCES COM 03674X106 0 -53,000 -100.00 0 -100.00
2024-05-10 2024-03-31 13F ANTERO RESOURCES COM 03674X106 53,000 53,000 1,537 0.0022
2024-01-30 2023-12-31 13F ANTERO RESOURCES COM 03674X106 0 -70,309 -100.00 0 -100.00
2023-10-25 2023-09-30 13F ANTERO RESOURCES COM 03674X106 70,309 -133,477 -65.50 1,706 -63.79 0.0029
2023-08-03 2023-06-30 13F ANTERO RESOURCES COM 03674X106 203,786 184,553 959.56 4,712 961.04 0.0071
2023-04-24 2023-03-31 13F ANTERO RESOURCES COM 03674X106 19,233 0 0.00 444 -25.50 0.0007
2023-02-14 2022-12-31 13F ANTERO RESOURCES COM 03674X106 19,233 19,233 596 0.0010
2022-08-10 2022-06-30 13F ANTERO RESOURCES COM 03674X106 0 -16,083 -100.00 0 -100.00
2022-05-13 2022-03-31 13F ANTERO RESOURCES COM 03674X106 16,083 -10,740 -40.04 491 4.69 0.0007
2022-02-14 2021-12-31 13F ANTERO RESOURCES COM 03674X106 26,823 -294,356 -91.65 469 -92.24 0.0006
2021-11-08 2021-09-30 13F ANTERO RESOURCES COM 03674X106 321,179 111,879 53.45 6,041 911.89 0.0086
2020-02-13 2019-12-31 13F ANTERO RES COM 03674X106 209,300 185,323 772.92 597 729.17 0.0015
2019-11-14 2019-09-30 13F ANTERO RES COM 03674X106 23,977 -2,431,085 -99.02 72 -99.47 0.0002
2019-08-23 2019-06-30 13F/A-1 ANTERO RES COM 03674X106 2,455,062 -67,580 -2.68 13,576 -39.05 0.0350
2019-08-14 2019-06-30 13F ANTERO RES COM 03674X106 2,455,062 -67,580 13,576
2019-05-15 2019-03-31 13F ANTERO RES COM 03674X106 2,522,642 2,155,075 586.31 22,275 545.47 0.0537
2019-02-06 2018-12-31 13F ANTERO RES COM 03674X106 367,567 299,283 438.29 3,451 185.44 0.0091
2018-11-15 2018-09-30 13F ANTERO RES COM 03674X106 68,284 -43,847 -39.10 1,209 -49.50 0.0029
2018-08-13 2018-06-30 13F ANTERO RES COM 03674X106 112,131 0 0.00 2,394 7.55 0.0061
2018-05-14 2018-03-31 13F/A-1 ANTERO RES COM 03674X106 112,131 -17,968 -13.81 2,226 -9.95 0.0057
2018-05-14 2018-03-31 13F ANTERO RES COM 03674X106 112,131 2,226
2018-02-13 2017-12-31 13F ANTERO RES COM 03674X106 130,099 -1,921 -1.46 2,472 -5.90 0.0060
2017-11-13 2017-09-30 13F ANTERO RES COM 03674X106 132,020 8,949 7.27 2,627 -1.24 0.0142
2017-08-14 2017-06-30 13F ANTERO RES COM 03674X106 123,071 4,615 3.90 2,660 -1.55 0.0148
2017-05-25 2017-03-31 13F/A-1 ANTERO RES COM 03674X106 118,456 56,167 90.17 2,702 83.44 0.0158
2017-05-12 2017-03-31 13F ANTERO RES COM 03674X106 118,456 2,702
2017-02-14 2016-12-31 13F ANTERO RES COM 03674X106 62,289 62,289 1,473 0.0088
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.