WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
Position in MTDR — Matador Resources Co
CIK 1644956
CHICAGO, IL
Position in MTDR
as of Mar 31, 2026
· filed May 8, 2026
Position Value
$39,353,558
+$21,685,447 QoQ
Shares Held
622,880
+49.6% QoQ
Ownership
0.502%
of shares outstanding
% of Portfolio
0.13%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Jun 2021
17 quarters on record
Voting authority
Sole 69.16099409195992.ToString("F0")%
Shared 0.ToString("F0")%
None 30.839005908040072.ToString("F0")%
Common Shares in MTDR Over Time
Shares Held
Position Value (USD)
Position in Oil & Gas E&P
Energy · as of Mar 31, 2026WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC holds $173,293,259 across 7 Oil & Gas E&P names. MTDR ranks #3 (22.7% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | GPOR |
Gulfport Energy Corp
|
198,845 | $42,069,636 | |
| 2 | VIST |
Vista Energy, S.A.B. de C.V.
|
556,283 | $41,982,678 | |
| 3 | MTDR |
Matador Resources Co
This page
|
622,880 | $39,353,558 | |
| 4 | BKV |
BKV Corp
|
1,153,767 | $32,905,434 | |
| 5 | AR |
ANTERO RESOURCES Corp
|
384,775 | $16,329,851 | |
| 6 | EXE |
EXPAND ENERGY Corp
|
3,154 | $346,246 | |
| 7 | PR |
Permian Resources Corp
|
14,346 | $305,856 |
All Filings in MTDR
Export CSV
17 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $39,353,558 | 622,880 | Shares | Sole | 2026-05-08 | |
| 2025-12-31 | $17,668,111 | 416,308 | Shares | Sole | 2026-02-09 | |
| 2025-09-30 | $20,663,576 | 459,906 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $23,271,851 | 487,675 | Shares | Sole | 2025-07-29 | |
| 2025-03-31 | $27,018,333 | 528,838 | Shares | Sole | 2025-05-09 | |
| 2024-12-31 | $31,005,223 | 551,106 | Shares | Sole | 2025-02-10 | |
| 2024-09-30 | $26,679,387 | 539,850 | Shares | Sole | 2024-11-08 | |
| 2024-06-30 | $33,148,208 | 556,178 | Shares | Sole | 2024-08-08 | |
| 2024-03-31 | $37,205,712 | 557,222 | Shares | Sole | 2024-05-08 | |
| 2023-12-31 | $31,737,489 | 558,169 | Shares | Sole | 2024-02-09 | |
| 2023-09-30 | $33,719,866 | 566,911 | Shares | Sole | 2023-11-09 | |
| 2022-09-30 | $46,161,205 | 943,606 | Shares | Sole | 2022-11-09 | |
| 2022-06-30 | $53,062,096 | 1,138,916 | Shares | Sole | 2022-08-10 | |
| 2022-03-31 | $71,855,873 | 1,356,283 | Shares | Sole | 2022-05-11 | |
| 2021-12-31 | $50,671,813 | 1,372,476 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $80,349,419 | 2,112,235 | Shares | Sole | 2021-11-10 | |
| 2021-06-30 | $153,762 | 4,270 | Shares | Sole | 2021-08-12 | |
| No filing history on record for this holder in this stock. | ||||||