Who owns GPK (GPK)
Which tracked institutional funds hold GPK, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See GPK 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
83 tracked funds added or opened GPK while 165 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
GPK’s largest tracked holder by dollar value, VANGUARD GROUP INC, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes GPK more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in GPK 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 440 tracked filers holding GPK, 282 increased or opened the position and 193 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases.
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 GPK 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 29
- VANGUARD PORTFOLIO MANAGEMENT LLC$144M
- VANGUARD CAPITAL MANAGEMENT LLC$132M
- VANGUARD FIDUCIARY TRUST CO$18M
- ALGERT GLOBAL LLC$15M
- Boston Partners$15M
- PRIVATE MANAGEMENT GROUP INC$13M
Full exits 33
- VANGUARD GROUP INC$435M
- EMINENCE CAPITAL, LP$193M
- CAUSEWAY CAPITAL MANAGEMENT LLC$68M
- Rubric Capital Management LP$30M
- Boston Trust Walden Corp$22M
- DekaBank Deutsche Girozentrale$21M
Largest adds
- MANNING & NAPIER ADVISORS LLC$82M
- CITADEL ADVISORS LLC$40M
- MILLENNIUM MANAGEMENT LLC$30M
- Qube Research & Technologies Ltd$30M
- NORGES BANK$26M
- OpenArc Corporate Advisory, LLC$23M
Largest trims
- AMERICAN CENTURY COMPANIES INC$212M
- BlackRock, Inc.$171M
- Allspring Global Investments Holdings, LLC$123M
- ALLIANCEBERNSTEIN L.P.$94M
- MASSACHUSETTS FINANCIAL SERVICES CO /MA/$88M
- FMR LLC$82M
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 |
|---|---|---|---|---|
| BlackRock, Inc. trimmed | 22,268,335 | $221M | 5.5% | 2026-Q1 |
| FULLER & THALER ASSET MANAGEMENT, INC. added | 20,315,566 | $202M | 5.0% | 2026-Q1 |
| Allspring Global Investments Holdings, LLC trimmed | 18,004,664 | $173M | 4.3% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 14,506,429 | $144M | 3.6% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 13,271,484 | $132M | 3.3% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 10,863,832 | $108M | 2.7% | 2026-Q1 |
| STATE STREET CORP added | 10,111,418 | $102M | 2.5% | 2026-Q1 |
| FMR LLC trimmed | 9,213,895 | $92M | 2.3% | 2026-Q1 |
| DME Capital Management, LP added | 9,099,980 | $90M | 2.2% | 2026-Q1 |
| MANNING & NAPIER ADVISORS LLC added | 8,481,670 | $84M | 2.1% | 2026-Q1 |
| NORGES BANK trimmed | 3,079,983 | $80M | 2.0% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 7,958,102 | $78M | 1.9% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC trimmed | 7,800,229 | $78M | 1.9% | 2026-Q1 |
| UBS Group AG trimmed | 7,592,773 | $75M | 1.9% | 2026-Q1 |
| THOMPSON SIEGEL & WALMSLEY LLC added | 7,489,999 | $74M | 1.8% | 2026-Q1 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ trimmed | 7,459,614 | $74M | 1.8% | 2026-Q1 |
| MORGAN STANLEY added | 6,275,391 | $62M | 1.5% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 5,872,912 | $58M | 1.4% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 5,471,137 | $54M | 1.3% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 5,292,202 | $53M | 1.3% | 2026-Q1 |
| Qube Research & Technologies Ltd added | 4,600,284 | $46M | 1.1% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 4,530,354 | $45M | 1.1% | 2026-Q1 |
| SHAPIRO CAPITAL MANAGEMENT LLC trimmed | 4,271,859 | $42M | 1.0% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 3,913,194 | $39M | 1.0% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 3,733,080 | $37M | 0.9% | 2026-Q1 |
| LETKO, BROSSEAU & ASSOCIATES INC added | 3,470,560 | $34M | 0.8% | 2026-Q1 |
| Squarepoint Ops LLC added | 3,454,012 | $34M | 0.8% | 2026-Q1 |
| D. E. Shaw & Co., Inc. added | 3,135,263 | $31M | 0.8% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 2,864,000 | $28M | 0.7% | 2026-Q1 |
| MARSHALL WACE, LLP added | 2,713,609 | $27M | 0.7% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 2,692,833 | $27M | 0.7% | 2026-Q1 |
| NORTHERN TRUST CORP added | 2,445,582 | $24M | 0.6% | 2026-Q1 |
| OpenArc Corporate Advisory, LLC added | 2,353,623 | $23M | 0.6% | 2026-Q1 |
| Bank of New York Mellon Corp added | 2,032,482 | $20M | 0.5% | 2026-Q1 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC added | 1,837,628 | $18M | 0.5% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 1,829,106 | $18M | 0.4% | 2026-Q1 |
| LSV ASSET MANAGEMENT trimmed | 1,758,428 | $17M | 0.4% | 2026-Q1 |
| Pictet Asset Management Holding SA added | 1,732,060 | $17M | 0.4% | 2026-Q1 |
| TUDOR INVESTMENT CORP ET AL added | 1,585,855 | $16M | 0.4% | 2026-Q1 |
| SEI INVESTMENTS CO added | 1,562,605 | $16M | 0.4% | 2026-Q1 |
| ALGERT GLOBAL LLC added | 1,556,427 | $15M | 0.4% | 2026-Q1 |
| HRT FINANCIAL LP added | 1,505,736 | $15M | 0.4% | 2026-Q1 |
| Boston Partners added | 1,498,165 | $15M | 0.4% | 2026-Q1 |
| PRIVATE MANAGEMENT GROUP INC new | 1,348,661 | $13M | 0.3% | 2026-Q1 |
| BARCLAYS PLC added | 1,324,951 | $13M | 0.3% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 1,293,498 | $13M | 0.3% | 2026-Q1 |
| ENVESTNET ASSET MANAGEMENT INC added | 1,287,620 | $13M | 0.3% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 1,248,218 | $12M | 0.3% | 2026-Q1 |
| Holocene Advisors, LP added | 1,239,828 | $12M | 0.3% | 2026-Q1 |
| Trexquant Investment LP added | 1,203,947 | $12M | 0.3% | 2026-Q1 |
| MILFORD FUNDS LTD trimmed | 1,180,110 | $12M | 0.3% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 1,147,086 | $11M | 0.3% | 2026-Q1 |
| Man Group plc added | 1,140,479 | $11M | 0.3% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 1,079,982 | $11M | 0.3% | 2026-Q1 |
| Point72 Asset Management, L.P. added | 1,054,057 | $10M | 0.3% | 2026-Q1 |
| Callodine Capital Management, LP added | 1,030,776 | $10M | 0.3% | 2026-Q1 |
| CAPITAL FUND MANAGEMENT S.A. added | 1,028,417 | $10M | 0.3% | 2026-Q1 |
| Invesco Ltd. trimmed | 963,980 | $10M | 0.2% | 2026-Q1 |
| FIRST TRUST ADVISORS LP added | 953,956 | $9M | 0.2% | 2026-Q1 |
| SCHRODER INVESTMENT MANAGEMENT GROUP added | 984,190 | $9M | 0.2% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC added | 910,748 | $9M | 0.2% | 2026-Q1 |
| GLENMEDE TRUST CO NA added | 905,924 | $9M | 0.2% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. added | 866,315 | $9M | 0.2% | 2026-Q1 |
| AMG National Trust Bank | 842,953 | $8M | 0.2% | 2026-Q1 |
| NEUBERGER BERMAN GROUP LLC trimmed | 798,457 | $8M | 0.2% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC trimmed | 771,964 | $8M | 0.2% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 771,920 | $8M | 0.2% | 2026-Q1 |
| VICTORY CAPITAL MANAGEMENT INC trimmed | 748,108 | $7M | 0.2% | 2026-Q1 |
| SKBA CAPITAL MANAGEMENT LLC added | 733,300 | $7M | 0.2% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC trimmed | 728,272 | $7M | 0.2% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 28,859,566 | $435M | 10.7% | 2025-Q4 stale |
| EMINENCE CAPITAL, LP added | 12,811,941 | $193M | 4.8% | 2025-Q4 stale |
| CAUSEWAY CAPITAL MANAGEMENT LLC added | 4,528,554 | $68M | 1.7% | 2025-Q4 stale |
| Premier Fund Managers Ltd trimmed | 2,414,385 | $47M | 1.1% | 2025-Q3 stale |
| HENNESSY ADVISORS INC trimmed | 1,559,900 | $33M | 0.8% | 2025-Q2 stale |
| Rubric Capital Management LP new | 2,000,000 | $30M | 0.7% | 2025-Q4 stale |
| L1 Capital Pty Ltd trimmed | 1,060,541 | $28M | 0.7% | 2025-Q1 stale |
| Boston Trust Walden Corp trimmed | 1,447,475 | $22M | 0.5% | 2025-Q4 stale |
| Swedbank AB new | 1,000,000 | $21M | 0.5% | 2025-Q2 stale |
| Howard Capital Management Group, LLC added | 1,069,223 | $21M | 0.5% | 2025-Q3 stale |
| DekaBank Deutsche Girozentrale | 676,230 | $21M | 0.5% | 2025-Q4 stale |
| ROYCE & ASSOCIATES LP added | 1,275,693 | $19M | 0.5% | 2025-Q4 stale |
| TWO SIGMA ADVISERS, LP added | 1,174,107 | $18M | 0.4% | 2025-Q4 stale |
| 12th Street Asset Management Company, LLC trimmed | 824,146 | $17M | 0.4% | 2025-Q2 stale |
| Impax Asset Management Group plc trimmed | 949,588 | $14M | 0.4% | 2025-Q4 stale |
| TD Asset Management Inc new | 548,715 | $14M | 0.4% | 2025-Q1 stale |
| Bank Julius Baer & Co. Ltd, Zurich added | 502,156 | $13M | 0.3% | 2025-Q1 stale |
| ZACKS INVESTMENT MANAGEMENT added | 495,233 | $13M | 0.3% | 2025-Q1 stale |
| Cubist Systematic Strategies, LLC added | 655,647 | $13M | 0.3% | 2025-Q3 stale |
| ATLANTIC INVESTMENT MANAGEMENT, INC. added | 645,584 | $13M | 0.3% | 2025-Q3 stale |
| DEPRINCE RACE & ZOLLO INC trimmed | 772,811 | $12M | 0.3% | 2025-Q4 stale |
| Glenmede Investment Management, LP trimmed | 532,683 | $10M | 0.3% | 2025-Q3 stale |
| FRONTIER CAPITAL MANAGEMENT CO LLC trimmed | 672,224 | $10M | 0.2% | 2025-Q4 stale |
| ExodusPoint Capital Management, LP added | 613,326 | $9M | 0.2% | 2025-Q4 stale |
| Corebridge Financial, Inc. trimmed | 331,577 | $9M | 0.2% | 2025-Q1 stale |
| FIL Ltd trimmed | 435,259 | $9M | 0.2% | 2025-Q3 stale |
| Allianz Asset Management GmbH trimmed | 326,858 | $8M | 0.2% | 2025-Q1 stale |
| Waratah Capital Advisors Ltd. trimmed | 396,003 | $8M | 0.2% | 2025-Q2 stale |
| Dana Investment Advisors, Inc. trimmed | 377,896 | $8M | 0.2% | 2025-Q2 stale |
| MACQUARIE GROUP LTD trimmed | 392,740 | $8M | 0.2% | 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.