Canonical: https://ownershiptrace.com/13f/companies/4170

# Who owns GPGI, Inc. (CMPO)? Elite investor 13F holders

6 tracked elite investors reported holding GPGI, Inc as of 2026-06-30, including Leon Cooperman, Starboard Value, Ancora Advisors / Ancora Holdings, Bridgewater Associates, GAMCO. Who bought, trimmed or exited each quarter, with links to the original SEC 13F filings.

6 tracked investors currently reported holding · Latest report period: 2026-06-30 · Financials · Financial Services

GPGI, Inc., together with its subsidiaries, provides sustainable injection molding solutions worldwide. The company's CompoSecure business provides metal payment cards, security, and authentication solutions. It offers engineered injection molding equipment and aftermarket tooling and services focuses on developing highly technical precision technologies instrumental in the delivery of food,…

## Reported holders and securities, including exits (up to 20)

| Investor | Security | Instrument | Report period | Filed | Value | Quantity | Units | Change | Source |
|  --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| [Leon Cooperman](https://ownershiptrace.com/13f/investors/51) | GPGI INC | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 180444452.00 USD | 11384508.000000 | Shares | buy | [Original filing](https://www.sec.gov/Archives/edgar/data/898382/0000945621-26-001056-index.html) |
| [Starboard Value](https://ownershiptrace.com/13f/investors/92) | GPGI INC | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 79678394.00 USD | 5027028.000000 | Shares | hold | [Original filing](https://www.sec.gov/Archives/edgar/data/1517137/0000921895-26-002172-index.html) |
| [Ancora Advisors / Ancora Holdings](https://ownershiptrace.com/13f/investors/101) | GPGI INC | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 7557026.00 USD | 476784.000000 | Shares | reduce | [Original filing](https://www.sec.gov/Archives/edgar/data/1446114/0001446114-26-000012-index.html) |
| [Cannell Capital](https://ownershiptrace.com/13f/investors/132) | GPGI INC | SHARE | 2026-06-30 | 2026-08-18 00:00:00 | 0.00 USD | 0.000000 | Shares | exited | [Original filing](https://www.sec.gov/Archives/edgar/data/1058854/0001420506-26-001852-index.html) |
| [Bridgewater Associates](https://ownershiptrace.com/13f/investors/8) | GPGI INC | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 1822956.00 USD | 115013.000000 | Shares | buy | [Original filing](https://www.sec.gov/Archives/edgar/data/1350694/0001350694-26-000003-index.html) |
| [GAMCO](https://ownershiptrace.com/13f/investors/137) | GPGI INC | SHARE | 2026-06-30 | 2026-08-12 00:00:00 | 1458200.00 USD | 92000.000000 | Shares | hold | [Original filing](https://www.sec.gov/Archives/edgar/data/807249/0001140361-26-032508-index.html) |
| [Gotham Asset Management](https://ownershiptrace.com/13f/investors/94672) | GPGI INC | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 295666.00 USD | 18654.000000 | Shares | reduce | [Original filing](https://www.sec.gov/Archives/edgar/data/1510387/0001398344-26-014644-index.html) |
| [Renaissance Technologies LLC](https://ownershiptrace.com/13f/investors/63) | GPGI INC | SHARE | 2026-06-30 | 2026-08-13 00:00:00 | 0.00 USD | 0.000000 | Shares | exited | [Original filing](https://www.sec.gov/Archives/edgar/data/1037389/0001037389-26-000059-index.html) |
| [Polen Capital Management](https://ownershiptrace.com/13f/investors/61) | GPGI INC | SHARE | 2026-06-30 | 2026-08-04 00:00:00 | 0.00 USD | 0.000000 | Shares | exited | [Original filing](https://www.sec.gov/Archives/edgar/data/1034524/0001172661-26-003035-index.html) |

Public disclosures can be delayed, incomplete, or amended. Report period describes a position date; transaction date describes a reported transaction; filed describes submission. A recent filing or page update does not establish a current holding. A dash means unavailable or not comparable, not zero.

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