Matador Resources Company
US ˙ NYSE ˙ US5764852050

SecurityMTDR / Matador Resources Company
InstitutionOppenheimer Asset Management Inc.
Latest Disclosed Ownership17,304 shares
Latest Disclosed Value $ 1,093,267
Oppenheimer Asset Management Inc. reports 10.31% decrease in ownership of MTDR / Matador Resources Company

On April 23, 2026 - Oppenheimer Asset Management Inc. filed a 13F-HR form disclosing ownership of 17,304 shares of Matador Resources Company (US:MTDR) valued at $1,093,267 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 19,293 shares of Matador Resources Company. This represents a change in shares of -10.31% during the quarter. The current value of the position is $926,975 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)
2026-04-23 2026-03-31 13F MATADOR RES COM 576485205 17,304 -1,989 -10.31 1,093 33.62 0.0031
2026-02-02 2025-12-31 13F MATADOR RES COM 576485205 19,293 -4,650 -19.42 819 -23.91 0.0025
2025-11-06 2025-09-30 13F MATADOR RES COM 576485205 23,943 -2,438 -9.24 1,076 -14.55 0.0118
2025-07-31 2025-06-30 13F MATADOR RES COM 576485205 26,381 -1,182 -4.29 1,259 -10.65 0.0144
2025-04-23 2025-03-31 13F MATADOR RES COM 576485205 27,563 -179 -0.65 1,408 -9.74 0.0175
2025-02-05 2024-12-31 13F MATADOR RES COM 576485205 27,742 9,672 53.53 1,561 74.69 0.0190
2024-11-05 2024-09-30 13F MATADOR RES COM 576485205 18,070 -6,604 -26.77 893 -39.25 0.0108
2024-08-08 2024-06-30 13F MATADOR RES COM 576485205 24,674 5,992 32.07 1,471 17.88 0.0188
2024-05-07 2024-03-31 13F MATADOR RES COM 576485205 18,682 -2,673 -12.52 1,247 2.72 0.0183
2024-02-13 2023-12-31 13F MATADOR RES COM 576485205 21,355 1,857 9.52 1,214 4.75 0.0169
2023-11-08 2023-09-30 13F MATADOR RES COM 576485205 19,498 -269 -1.36 1,160 12.09 0.0178
2023-08-03 2023-06-30 13F MATADOR RES COM 576485205 19,767 344 1.77 1,034 11.78 0.0152
2023-05-10 2023-03-31 13F MATADOR RES COM 576485205 19,423 13,933 253.79 926 194.59 0.0143
2023-02-07 2022-12-31 13F MATADOR RES COM 576485205 5,490 -576 -9.50 314 5.72 0.0051
2022-11-14 2022-09-30 13F MATADOR RES COM 576485205 6,066 -79 -1.29 297 3.48 0.0052
2022-08-08 2022-06-30 13F MATADOR RES COM 576485205 6,145 6,145 287 0.0048
2020-08-11 2020-06-30 13F MATADOR RES COM 576485205 0 -49,753 -100.00 0 -100.00
2020-05-08 2020-03-31 13F MATADOR RES COM 576485205 49,753 -28,226 -36.20 123 -91.22 0.0030
2020-02-07 2019-12-31 13F MATADOR RES COM 576485205 77,979 -10,212 -11.58 1,401 -3.91 0.0296
2019-10-31 2019-09-30 13F MATADOR RES COM 576485205 88,191 5,910 7.18 1,458 -10.88 0.0324
2019-08-09 2019-06-30 13F MATADOR RES COM 576485205 82,281 50,536 159.19 1,636 166.45 0.0361
2019-04-24 2019-03-31 13F MATADOR RES COM 576485205 31,745 1,290 4.24 614 29.81 0.0138
2019-01-30 2018-12-31 13F MATADOR RES COM 576485205 30,455 -1,926 -5.95 473 -55.79 0.0117
2018-10-26 2018-09-30 13F MATADOR RES COM 576485205 32,381 920 2.92 1,070 13.11 0.0237
2018-08-10 2018-06-30 13F MATADOR RES COM 576485205 31,461 1,463 4.88 946 5.46 0.0231
2018-05-09 2018-03-31 13F MATADOR RES COM 576485205 29,998 17,653 143.00 897 167.76 0.0225
2018-02-07 2017-12-31 13F MATADOR RES COM 576485205 12,345 0 0.00 335 0.00 0.0089
2017-11-14 2017-09-30 13F MATADOR RES COM 576485205 12,345 -36 -0.29 335 26.89 0.0087
2017-08-09 2017-06-30 13F MATADOR RES COM 576485205 12,381 9,497 329.30 264 282.61 0.0073
2017-05-15 2017-03-31 13F MATADOR RES COM 576485205 2,884 2,884 69 0.0020
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.