Institutional Ownership
Perma-Fix Environmental Svcs
CUSIP 714157203COM NEWPESIQ1 2026
13D / 13G Filings
11
Schedule 13D/13G on record
Beneficial Filers
3
Distinct reporting persons
Largest Stake
12.0%
Max % of class reported
Institutional Holders
81
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
11 filings · latest Oct 30, 2025
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Oct 30, 2025 | The Vanguard Group | 13G | 5.1% | 935.9K | SEC |
| 2 | Nov 8, 2024 | Blackrock, Inc. | 13G | 6.4% | 1.01M | SEC |
| 3 | Oct 22, 2024 | Blackrock, Inc. | 13G | 6.4% | 1.01M | SEC |
| 4 | Apr 12, 2023 | Heartland Advisors Inc | 13D/A | 4.9% | 649.4K | SEC |
| 5 | Mar 24, 2023 | Heartland Advisors Inc | 13D/A | 5.5% | 729.3K | SEC |
| 6 | Feb 17, 2023 | Heartland Advisors Inc | 13D/A | 7.1% | 944.6K | SEC |
| 7 | Jan 10, 2023 | Heartland Advisors Inc | 13D/A | 8.3% | 1.11M | SEC |
| 8 | Nov 16, 2021 | Heartland Advisors Inc | 13D/A | 8.6% | 1.14M | SEC |
| 9 | Sep 14, 2021 | Heartland Advisors Inc | 13D/A | 10.1% | 1.23M | SEC |
| 10 | Jan 13, 2021 | Heartland Advisors Inc | 13D/A | 11.1% | 1.35M | SEC |
1 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Perma-Fix Environmental Svcs.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Blackrock, Inc. | 1.17M | $12.51M |
| 2 | Mak Capital One LLC | 918.7K | $9.82M |
| 3 | Prescott Group Capital Management, L.L.C. | 777.1K | $8.31M |
| 4 | Geode Capital Management, LLC | 432.7K | $4.63M |
| 5 | Heartland Advisors Inc | 400.0K | $4.28M |
| 6 | Diamond Hill Capital Management Inc | 356.0K | $3.81M |
| 7 | State Street Corp | 335.5K | $3.59M |
| 8 | Potomac Capital Management, Inc. | 296.7K | $3.17M |
| 9 | Group One Trading LLC | 247.7K | $2.65M |
| 10 | Dimensional Fund Advisors LP | 163.8K | $1.75M |