WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
Position in GPOR — Gulfport Energy Corp
CIK 1644956
CHICAGO, IL
Position in GPOR
as of Jun 30, 2026
· filed Aug 12, 2026
Position Value
$26,585,371
-$15,484,265 QoQ
Shares Held
156,661
-21.2% QoQ
Ownership
0.886%
of shares outstanding
% of Portfolio
0.08%
of 13F equity value
Holder Rank
#32
of 291 holders
Holding Since
Mar 2024
10 quarters on record
Voting authority
Sole 62%
Shared 0%
None 38%
Common Shares in GPOR Over Time
Shares Held
Position Value (USD)
Position in Oil & Gas E&P
Energy · as of Jun 30, 2026WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC holds $416,132,530 across 9 Oil & Gas E&P names. GPOR ranks #5 (6.4% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | CNQ |
CANADIAN NATURAL RESOURCES Ltd
|
3,635,082 | $143,585,739 | |
| 2 | LB |
LandBridge Co LLC
|
1,235,265 | $97,882,398 | |
| 3 | VIST |
Vista Energy, S.A.B. de C.V.
|
1,245,598 | $79,469,152 | |
| 4 | BKV |
BKV Corp
|
1,194,790 | $32,689,454 | |
| 5 | GPOR |
Gulfport Energy Corp
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|
156,661 | $26,585,371 | |
| 6 | MTDR |
Matador Resources Co
|
492,596 | $24,521,428 | |
| 7 | AR |
ANTERO RESOURCES Corp
|
308,622 | $10,844,977 | |
| 8 | EXE |
EXPAND ENERGY Corp
|
3,168 | $288,889 |
All Filings in GPOR
Export CSV
10 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $26,585,371 | 156,661 | Shares | Sole | 2026-08-12 | |
| 2026-03-31 | $42,069,636 | 198,845 | Shares | Sole | 2026-05-08 | |
| 2025-12-31 | $40,004,796 | 192,340 | Shares | Sole | 2026-02-09 | |
| 2025-09-30 | $38,394,002 | 212,145 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $45,257,617 | 224,972 | Shares | Sole | 2025-07-29 | |
| 2025-03-31 | $44,877,680 | 243,715 | Shares | Sole | 2025-05-09 | |
| 2024-12-31 | $46,974,131 | 255,017 | Shares | Sole | 2025-02-10 | |
| 2024-09-30 | $37,691,749 | 249,037 | Shares | Sole | 2024-11-08 | |
| 2024-06-30 | $31,257,906 | 207,006 | Shares | Sole | 2024-08-08 | |
| 2024-03-31 | $33,147,241 | 207,015 | Shares | Sole | 2024-05-08 | |
| No filing history on record for this holder in this stock. | ||||||