Matador Resources Co (NYSE: MTDR), an SEC filer in Crude Petroleum & Natural Gas, closed at $56.39, -0.6%, on 2026-08-28, with a market cap of $7.0B as of 2026-08-27, a trailing P/E of 9.3, a return on equity of 14.1%, a net margin of 20.5% and 3-year sales growth of 6.5%. Institutional ownership, earnings history and filed financials are on the tabs below.
| # | Holder | Shares | Value | % of shares out | Δ QoQ |
|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 11,137,65111.1M | $704M | 8.96% | ADD 3% |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | 8,464,4008.5M | $535M | 6.81% | NEW† |
| 3 | DIMENSIONAL FUND ADVISORS LP | 6,948,1046.9M | $439M | 5.59% | ADD 4% |
| 4 | STATE STREET CORP | 5,133,5665.1M | $324M | 4.13% | ADD 11% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 5,071,3485.1M | $320M | 4.08% | NEW† |
| 6 | WELLINGTON MANAGEMENT GROUP LLP | 3,996,5014.0M | $252M | 3.22% | ADD 17% |
| 7 | LSV ASSET MANAGEMENT | 3,847,9313.8M | $243M | 3.10% | — |
| 8 | T. Rowe Price Investment Management, Inc. | 3,744,7923.7M | $237M | 3.01% | TRIM -22% |
| 9 | ADAGE CAPITAL PARTNERS GP, L.L.C. | 3,035,9973.0M | $192M | 2.44% | TRIM -10% |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | 2,329,0202.3M | $147M | 1.87% | ADD 4% |
† NEW this big is usually a rename.
Ranked by each filer’s own reported value, not shares.
1 holder — The filer reported no value for this line, so it carries no dollar figure and is left out of the percentage and value columns.
| Biggest buyers | Δ shares | Δ value | |
|---|---|---|---|
| VANGUARD PORTFOLIO MANAGEMENT LLC | +8,464,400 | $535M | OPEN |
| VANGUARD CAPITAL MANAGEMENT LLC | +5,071,348 | $320M | OPEN |
| CIBC Bancorp USA Inc. | +1,366,491 | $86M | OPEN |
| Driehaus Capital Management LLC | +1,189,054 | $75M | OPEN |
| FIRST TRUST ADVISORS LP | +810,808 | $51M | ADD |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| VANGUARD GROUP INC | −14,761,769 | $933M | CLOSE |
| CIBC Private Wealth Group LLC | −1,357,127 | $86M | CLOSE |
| Encompass Capital Advisors LLC | −1,254,678 | $79M | CLOSE |
| MILLENNIUM MANAGEMENT LLC | −1,137,956 | $72M | TRIM |
| T. Rowe Price Investment Management, Inc. | −1,068,597 | $68M | TRIM |
Prior quarter split-rebased · 13Fs are long, US-listed only.
| Holder | 2024-Q4 | 2025-Q1 | 2025-Q2 | 2025-Q3 | 2025-Q4 | 2026-Q1 | Latest value |
|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 11.7M | 11.4M | 11.2M | 10.5M | 10.8M | 11.1M | $704M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | — | — | — | — | — | 8.5M | $535M |
| DIMENSIONAL FUND ADVISORS LP | 5.4M | 5.5M | 6.2M | 6.4M | 6.7M | 6.9M | $439M |
| STATE STREET CORP | 4.6M | 4.7M | 4.6M | 4.5M | 4.6M | 5.1M | $324M |
| VANGUARD CAPITAL MANAGEMENT LLC | — | — | — | — | — | 5.1M | $320M |
| WELLINGTON MANAGEMENT GROUP LLP | 1.6M | 2.0M | 1.9M | 2.1M | 3.4M | 4.0M | $252M |
| LSV ASSET MANAGEMENT | 1.5M | 2.3M | 3.3M | 3.5M | 3.8M | 3.8M | $243M |
| T. Rowe Price Investment Management, Inc. | 3.8M | 3.5M | 3.5M | 3.7M | 4.8M | 3.7M | $237M |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 50K | 1.1M | 2.6M | 3.0M | 3.4M | 3.0M | $192M |
| GEODE CAPITAL MANAGEMENT, LLC | 2.0M | 2.1M | 2.1M | 2.2M | 2.2M | 2.3M | $147M |
Green = added, red = trimmed, grey = held; a dash is a quarter with no 13F on file — a gap, not an exit.
Breaks = no 13F that quarter.
Short interest has its own tab now — open SI →
SEC Form 13F · ~10,250 filers, 10y · long-only, US-listed, filed ≤45d after quarter-end.
SEC Schedule 13D/G XML · group aggregate.
