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GPOR · Gulfport Energy Corp

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Market Cap
$3.20B
Shares
17.68M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 294
Total Value: $3,609,200,633
Total Shares: 21,268,135
Showing 1–100 of 299 holdings by value · page 1 of 3

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 294 13F filers · Δ vs Mar 31, 2026
Top Holder
12.3%
Sep 2023 → Jun 2026 · range 10.5% – 32.7%
−0.9 pts
Top 5
34.8%
Sep 2023 → Jun 2026 · range 30.9% – 53.4%
+3.7 pts
Top 10
47.8%
Sep 2023 → Jun 2026 · range 45.3% – 66.9%
+2.1 pts
HHI
398
Sep 2023 → Jun 2026 · range 302 – 1,251
Broadly held+41

Quarterly Activity

vs Mar 31, 2026
New
46
Increased
125
Decreased
87
Sold Out
60
Unchanged
36
Holder count: -14
Institutional value: -13.6%
Shares held: +7.7%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 299
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 874499 CUSIP 402635502 13F (30d) 212 filings 210 filers Visit website Investor relations