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GeoPark GPRK

US equityMarket cap rank #3485Oil & Gas E&P
$11.11 −$0.33 (-2.88%)
Pre-market · Oct 8, 8:20 am ET · After hours $11.11 0.00%
Open$11.50
Prev close$11.44
Day range$11.07 – $11.62
Volume412.8K
Market cap$720.99M
P/E (TTM)8.9
Dividend yield2.07%

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Institutional ownership74.9%-0.21 pts vs. prior quarter
Institutions holding86-1 vs. prior quarter
Insider trades (recent)24 buys / 4 sellsNet buying
Short interest1.85% of floatDays to cover 1.0 · as of 15 Sep 2026
Short-sale volume share18.4%5-day average of daily volume

Short-sale volume as % of daily volume

14%18%23%27%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: +$2.07M (12 inflow days, 8 outflow days).

Net flow by order size, last 20 sessions

+$3.6MSuper−$1.6MBig+$2.1MMid+$5.0MSmall

Super/Big orders approximate institutional-size trades; Mid/Small approximate retail-size trades. Net buy minus sell value in each bucket, summed over the window.

The five largest holders on file together own 98.3% of shares outstanding.

Largest holders

  • Jaime Gilinski43.58%
  • James Park20.44%
  • Parex Resources Inc.14.64%
  • Generacion Argentina SA12.53%
  • Renaissance Technologies Corp.7.10%
  • Cobas Asset Management, SGIIC, SA6.03%
  • Generation Argentina Inc5.50%
  • Fourth Sail Capital LP4.63%

By investor type

  • Individual/Insider68.42%
  • Mutual Fund20.03%
  • Private Company19.44%
  • Hedge Fund18.82%
  • Public Company15.19%
  • Family Office/Trust1.08%
  • VC/PE Fund0.23%
  • Sovereign Wealth Fund0.07%

Reported short interest has risen from 1.41% to 1.85% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).

Recent institutional activity

HolderTypePeriodShare changeNew stake
Camilo Martinez Individual/Insider 2026/Q3 +283,729 0.7%
VR Advisory Services Ltd. Hedge Fund 2026/Q3 +1,148,479 4.5%
D. E. Shaw & Co., L.P. Hedge Fund 2026/Q3 +147,819 1.3%
Sycale Advisors (NY) LLC Hedge Fund 2026/Q3 +115,524 1.1%
SG Americas Securities, LLC Private Company 2026/Q3 +89,995 0.2%
Nuveen Investments Mutual Fund 2026/Q3 +65,145 0.2%
Channing Global Advisors, LLC Mutual Fund 2026/Q3 +62,765 0.3%
XTX Markets Limited Private Company 2026/Q3 +46,162 0.5%
Pale Fire Capital SE VC/PE Fund 2026/Q3 +41,800 0.2%
Northern Trust Global Investments Mutual Fund 2026/Q3 +35,709 0.1%
CV Advisors LLC VC/PE Fund 2026/Q3 +32,515 0.1%
Mirae Asset Global Investments Co., Ltd Mutual Fund 2026/Q3 +25,195 0.9%
Deltec Asset Management LLC Mutual Fund 2026/Q3 +25,000 0.1%
Apollon Wealth Management, LLC Mutual Fund 2026/Q3 +22,000 0.5%
Axxion S.A Mutual Fund 2026/Q3 +20,000 0.0%

Institutional buy/sell activity by reporting period, largest moves first.

Insider transactions

DateInsiderTitleTransactionSharesPriceHeld after
20 Sep 2026 Dorita Gilinski Director Other Acquisition +4,224 $9.74 4,224
7 Sep 2026 James Park Co-Founder & Vice Chair Open Market Disposition -100,000 $11.92 8,497,251
23 Aug 2026 Brian Maxted Independent Director Other Acquisition +2,567 – 45,026
23 Aug 2026 Constantine G. Papadimitriou Independent Non-Executive Director Other Acquisition +2,567 – 106,489
23 Aug 2026 Robert Bedingfield Independent Non-Executive Director Other Acquisition +5,479 $9.74 240,375
23 Aug 2026 Gabriel Kardonski Independent Director Other Acquisition +4,957 $9.74 11,313
23 Aug 2026 Carlos Macellari Independent Director Other Acquisition +2,567 – 58,675
23 Aug 2026 Camilo Martinez Director Other Acquisition +4,392 $9.74 283,729
9 Aug 2026 James Park Co-Founder & Vice Chair Open Market Disposition -120,000 $9.65 8,597,251
13 Jul 2026 Camilo Martinez Director Initial Statement of Beneficial +0 – 279,337
26 May 2026 Gabriel Kardonski Independent Director Other Acquisition +6,356 $8.89 6,356
17 May 2026 Brian Maxted Independent Director Other Acquisition +2,812 – 42,459
17 May 2026 Constantine G. Papadimitriou Independent Non-Executive Director Other Acquisition +2,812 – 103,922
17 May 2026 Marcela Vaca Executive Director Other Acquisition +2,812 – 41,370
17 May 2026 Robert Bedingfield Independent Non-Executive Director Other Acquisition +6,187 $8.89 234,896
17 May 2026 Sylvia Gomez Independent Chairperson Other Acquisition +7,030 $8.89 44,898
17 May 2026 Carlos Macellari Independent Director Other Acquisition +2,812 – 56,108
7 May 2026 Sylvia Gomez Independent Chairperson Sale to Issuer -7,000 $9.31 37,868
19 Apr 2026 James Park Co-Founder & Vice Chair Open Market Disposition -100,000 $8.83 8,717,251
23 Mar 2026 Felipe Bayon Pardo Chief Executive Officer Other Acquisition +44,382 – 127,343

From Form 4/Form 144 filings. Negative share counts are disposals (sales, gifts, or shares withheld for taxes); positive are acquisitions.

Short interest, by report

Report dateShares short% of floatDays to cover
15 Sep 2026 1,197,354 1.8% 1.0
31 Aug 2026 926,564 1.4% 2.0
14 Aug 2026 838,175 1.3% 2.4
31 Jul 2026 900,239 1.4% 2.4
15 Jul 2026 1,043,521 1.6% 2.7
30 Jun 2026 913,620 1.4% 1.6

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