Who owns GPOR (GPOR)
Which tracked institutional funds hold GPOR, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See GPOR company fundamentals →
Ownership as of the 2026-Q1 13F filings. 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
97 tracked funds added or opened GPOR while 74 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
GPOR’s largest tracked holder by dollar value, Silver Point Capital L.P., sizes it at 51.7% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 51.7pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in GPOR divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 306 tracked filers holding GPOR, 169 increased or opened the position and 153 reduced or closed it; over the same quarter, open-market insider Form 4 buying and selling roughly offset.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in GPOR between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 26
- VANGUARD CAPITAL MANAGEMENT LLC$148M
- VANGUARD PORTFOLIO MANAGEMENT LLC$66M
- FRONTIER CAPITAL MANAGEMENT CO LLC$47M
- VANGUARD FIDUCIARY TRUST CO$23M
- Alyeska Investment Group, L.P.$17M
- Tributary Capital Management, LLC$11M
Full exits 23
- VANGUARD GROUP INC$190M
- Ninepoint Partners LP$42M
- Driehaus Capital Management LLC$32M
- First Pacific Advisors, LP$27M
- Lighthouse Investment Partners, LLC$13M
- SIR Capital Management, L.P.$11M
Largest adds
- Assenagon Asset Management S.A.$97M
- T. Rowe Price Investment Management, Inc.$55M
- STATE STREET CORP$44M
- Gemsstock Ltd.$37M
- Palo Duro Investment Partners, LP$28M
- HITE Hedge Asset Management LLC$25M
Largest trims
- Silver Point Capital L.P.$166M
- WELLINGTON MANAGEMENT GROUP LLP$67M
- ALLIANCEBERNSTEIN L.P.$40M
- FMR LLC$29M
- MILLENNIUM MANAGEMENT LLC$25M
- PRICE T ROWE ASSOCIATES INC /MD/$22M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| Silver Point Capital L.P. trimmed | 2,606,499 | $551M | 12.4% | 2026-Q1 |
| BlackRock, Inc. added | 1,163,741 | $246M | 5.5% | 2026-Q1 |
| FMR LLC trimmed | 915,469 | $194M | 4.4% | 2026-Q1 |
| STATE STREET CORP added | 764,817 | $162M | 3.6% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 699,070 | $148M | 3.3% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 630,099 | $133M | 3.0% | 2026-Q1 |
| JENNISON ASSOCIATES LLC trimmed | 620,847 | $131M | 3.0% | 2026-Q1 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. added | 589,773 | $125M | 2.8% | 2026-Q1 |
| VICTORY CAPITAL MANAGEMENT INC added | 538,285 | $114M | 2.6% | 2026-Q1 |
| Gemsstock Ltd. added | 508,217 | $108M | 2.4% | 2026-Q1 |
| Assenagon Asset Management S.A. added | 467,419 | $99M | 2.2% | 2026-Q1 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. added | 460,059 | $97M | 2.2% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 398,931 | $84M | 1.9% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 377,669 | $80M | 1.8% | 2026-Q1 |
| T. Rowe Price Investment Management, Inc. added | 371,196 | $79M | 1.8% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 357,000 | $77M | 1.7% | 2026-Q1 |
| Palo Duro Investment Partners, LP added | 352,103 | $74M | 1.7% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 310,966 | $66M | 1.5% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC trimmed | 310,017 | $66M | 1.5% | 2026-Q1 |
| WESTWOOD HOLDINGS GROUP INC added | 270,962 | $57M | 1.3% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 240,120 | $51M | 1.1% | 2026-Q1 |
| JANUS HENDERSON GROUP PLC added | 223,669 | $47M | 1.1% | 2026-Q1 |
| FRONTIER CAPITAL MANAGEMENT CO LLC new | 221,949 | $47M | 1.1% | 2026-Q1 |
| WHITEBOX ADVISORS LLC trimmed | 219,627 | $46M | 1.0% | 2026-Q1 |
| GOLDENTREE ASSET MANAGEMENT LP added | 216,250 | $46M | 1.0% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC trimmed | 202,478 | $43M | 1.0% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 201,629 | $43M | 1.0% | 2026-Q1 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC added | 198,845 | $42M | 0.9% | 2026-Q1 |
| Global Alpha Capital Management Ltd. trimmed | 190,542 | $40M | 0.9% | 2026-Q1 |
| NORTHERN TRUST CORP added | 178,989 | $38M | 0.9% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 152,201 | $32M | 0.7% | 2026-Q1 |
| Pictet Asset Management Holding SA trimmed | 149,652 | $32M | 0.7% | 2026-Q1 |
| HITE Hedge Asset Management LLC added | 148,202 | $31M | 0.7% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC added | 137,200 | $29M | 0.7% | 2026-Q1 |
| FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ added | 129,048 | $27M | 0.6% | 2026-Q1 |
| GW&K Investment Management, LLC trimmed | 121,704 | $26M | 0.6% | 2026-Q1 |
| MACKENZIE FINANCIAL CORP trimmed | 117,001 | $25M | 0.6% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 114,446 | $24M | 0.5% | 2026-Q1 |
| Penn Capital Management Company, LLC added | 111,408 | $24M | 0.5% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 108,788 | $23M | 0.5% | 2026-Q1 |
| UBS Group AG added | 108,436 | $23M | 0.5% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 105,372 | $22M | 0.5% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 104,519 | $22M | 0.5% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC trimmed | 103,337 | $22M | 0.5% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC trimmed | 101,944 | $22M | 0.5% | 2026-Q1 |
| SYSTEMATIC FINANCIAL MANAGEMENT LP added | 101,696 | $22M | 0.5% | 2026-Q1 |
| LSP Investment Advisors, LLC trimmed | 98,800 | $21M | 0.5% | 2026-Q1 |
| MACKAY SHIELDS LLC trimmed | 98,592 | $21M | 0.5% | 2026-Q1 |
| MORGAN STANLEY added | 92,714 | $20M | 0.4% | 2026-Q1 |
| Bridgewater Associates, LP trimmed | 91,835 | $19M | 0.4% | 2026-Q1 |
| Corigliano Investment Advisers, LLC added | 81,100 | $17M | 0.4% | 2026-Q1 |
| FIRST TRUST ADVISORS LP added | 78,951 | $17M | 0.4% | 2026-Q1 |
| Alyeska Investment Group, L.P. trimmed | 78,141 | $17M | 0.4% | 2026-Q1 |
| SCHRODER INVESTMENT MANAGEMENT GROUP added | 75,746 | $16M | 0.4% | 2026-Q1 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 73,965 | $16M | 0.4% | 2026-Q1 |
| SEI INVESTMENTS CO added | 68,711 | $15M | 0.3% | 2026-Q1 |
| Grantham, Mayo, Van Otterloo & Co. LLC trimmed | 61,539 | $13M | 0.3% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 53,117 | $11M | 0.3% | 2026-Q1 |
| Tributary Capital Management, LLC new | 51,282 | $11M | 0.2% | 2026-Q1 |
| Energy Income Partners, LLC added | 50,395 | $11M | 0.2% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 49,717 | $11M | 0.2% | 2026-Q1 |
| Stephens Investment Management Group LLC trimmed | 49,180 | $10M | 0.2% | 2026-Q1 |
| Nuveen, LLC added | 47,341 | $10M | 0.2% | 2026-Q1 |
| Russell Investments Group, Ltd. trimmed | 45,314 | $10M | 0.2% | 2026-Q1 |
| Steamboat Capital Partners, LLC trimmed | 45,259 | $10M | 0.2% | 2026-Q1 |
| Invesco Ltd. trimmed | 45,021 | $10M | 0.2% | 2026-Q1 |
| LORD, ABBETT & CO. LLC trimmed | 42,596 | $9M | 0.2% | 2026-Q1 |
| Azarias Capital Management, L.P. added | 42,121 | $9M | 0.2% | 2026-Q1 |
| CONGRESS ASSET MANAGEMENT CO added | 39,407 | $8M | 0.2% | 2026-Q1 |
| Thrivent Financial for Lutherans trimmed | 36,687 | $8M | 0.2% | 2026-Q1 |
| Rafferty Asset Management, LLC added | 35,640 | $8M | 0.2% | 2026-Q1 |
| BEACONLIGHT CAPITAL, LLC trimmed | 33,981 | $7M | 0.2% | 2026-Q1 |
| CSM Advisors, LLC trimmed | 32,943 | $7M | 0.2% | 2026-Q1 |
| SG Americas Securities, LLC added | 32,810 | $7M | 0.2% | 2026-Q1 |
| Swiss National Bank added | 31,200 | $7M | 0.1% | 2026-Q1 |
| MARSHALL WACE, LLP added | 31,025 | $7M | 0.1% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 30,802 | $7M | 0.1% | 2026-Q1 |
| Y-Intercept (Hong Kong) Ltd added | 28,108 | $6M | 0.1% | 2026-Q1 |
| Jefferies Financial Group Inc. added | 27,695 | $6M | 0.1% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 26,721 | $6M | 0.1% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 26,670 | $6M | 0.1% | 2026-Q1 |
| Hillsdale Investment Management Inc. added | 25,640 | $5M | 0.1% | 2026-Q1 |
| STATE OF WISCONSIN INVESTMENT BOARD trimmed | 25,571 | $5M | 0.1% | 2026-Q1 |
| BARCLAYS PLC trimmed | 25,165 | $5M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 915,139 | $190M | 4.3% | 2025-Q4 stale |
| MACQUARIE GROUP LTD trimmed | 505,768 | $92M | 2.1% | 2025-Q3 stale |
| Ninepoint Partners LP new | 200,000 | $42M | 0.9% | 2025-Q4 stale |
| Driehaus Capital Management LLC trimmed | 154,700 | $32M | 0.7% | 2025-Q4 stale |
| First Pacific Advisors, LP trimmed | 127,434 | $27M | 0.6% | 2025-Q4 stale |
| JACOBS LEVY EQUITY MANAGEMENT, INC trimmed | 89,262 | $18M | 0.4% | 2025-Q2 stale |
| Woodline Partners LP trimmed | 82,852 | $15M | 0.3% | 2025-Q3 stale |
| Pacer Advisors, Inc. new | 74,140 | $13M | 0.3% | 2025-Q3 stale |
| Canoe Financial LP trimmed | 65,900 | $13M | 0.3% | 2025-Q2 stale |
| Lighthouse Investment Partners, LLC trimmed | 63,670 | $13M | 0.3% | 2025-Q4 stale |
| SIR Capital Management, L.P. trimmed | 54,751 | $11M | 0.3% | 2025-Q4 stale |
| Portolan Capital Management, LLC added | 43,376 | $9M | 0.2% | 2025-Q2 stale |
| Yaupon Capital Management LP added | 39,287 | $7M | 0.2% | 2025-Q3 stale |
| SummitTX Capital, L.P. added | 31,467 | $7M | 0.1% | 2025-Q4 stale |
| TUDOR INVESTMENT CORP ET AL trimmed | 32,048 | $6M | 0.1% | 2025-Q2 stale |
| Clark Capital Management Group, Inc. trimmed | 32,245 | $6M | 0.1% | 2025-Q3 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.