Perma Fix
PESIInstitutional ownership · Q2 2026
Institutional holders
88
+3 (+3.5%) vs Q1 2026
Reported value
$135.2M
+67.1% vs Q1 2026
Shares held
9.5M
+1.9M shares
Quarter
Q2 2026
Period ended Jun 30, 2026
88 institutional managers reported holding 9,470,507 shares worth $135,225,333 on Form 13F for Q2 2026, against 85 in Q1 2026. Share positions on CUSIP 714157203 only; option legs and principal-amount lines are not counted.
Top 25 institutional holders · Q2 2026
| # | Manager | Shares | Value | % of portfolio | Change | Position page |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 1,252,756 | $17.9M | < 0.01% | +82.5K | Position |
| 2 | MAK CAPITAL ONE LLC | 1,032,958 | $14.8M | 2.07% | +114.3K | Position |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 811,743 | $11.6M | < 0.01% | +52.3K | Position |
| 4 | PRESCOTT GROUP CAPITAL MANAGEMENT L L C | 777,142 | $11.1M | 0.96% | — | Position |
| 5 | DIAMOND HILL CAPITAL MANAGEMENT INC | 642,533 | $9.2M | 0.07% | +286.6K | Position |
| 6 | KENNEDY CAPITAL MANAGEMENT LLC | 610,903 | $8.7M | 0.15% | New | Position |
| 7 | Potomac Capital Management Inc | 477,000 | $6.8M | 4.65% | +180.3K | Position |
| 8 | GEODE CAPITAL MANAGEMENT LLC | 455,156 | $6.5M | < 0.01% | +22.5K | Position |
| 9 | HEARTLAND ADVISORS INC | 400,000 | $5.7M | 0.25% | — | Position |
| 10 | STATE STREET CORPORATION | 349,744 | $5.0M | < 0.01% | +14.2K | Position |
| 11 | DIMENSIONAL FUND ADVISORS LP | 191,063 | $2.7M | < 0.01% | +27.3K | Position |
| 12 | The Goldman Sachs Group Inc | 162,755 | $2.3M | < 0.01% | +20.1K | Position |
| 13 | SUSQUEHANNA INTERNATIONAL GROUP LLP | 156,934 | $2.2M | < 0.01% | +145.8K | Position |
| 14 | CITADEL ADVISORS LLC | 152,626 | $2.2M | < 0.01% | +83.3K | Position |
| 15 | NORTHERN TRUST CORPORATION | 141,639 | $2.0M | < 0.01% | +12.1K | Position |
| 16 | VANGUARD FIDUCIARY TRUST CO | 123,040 | $1.8M | < 0.01% | +3.8K | Position |
| 17 | GROUP ONE TRADING L P | 122,611 | $1.8M | < 0.01% | -125.1K | Position |
| 18 | VANGUARD PORTFOLIO MANAGEMENT LLC | 121,267 | $1.7M | < 0.01% | +20.9K | Position |
| 19 | North Star Investment Management Corp | 120,532 | $1.7M | 0.09% | — | Position |
| 20 | Diametric Capital LP | 114,714 | $1.6M | 0.17% | New | Position |
| 21 | MYDA Advisors LLC | 90,000 | $1.3M | 0.19% | -30.0K | Position |
| 22 | CM WEALTH ADVISORS LLC | 87,839 | $1.3M | 0.23% | New | Position |
| 23 | XTX Topco Ltd | 62,888 | $898.7K | 0.01% | +39.7K | Position |
| 24 | Owls Nest Partners IA LLC | 56,555 | $808.2K | 0.26% | New | Position |
| 25 | Pale Fire Capital SE | 55,627 | $794.9K | 0.06% | +7.0K | Position |
Values as reported on each manager's Q2 2026 Form 13F. Change is in shares against the manager's prior-quarter filing.
13F holders by quarter
| Quarter | Holders | Shares | Value |
|---|---|---|---|
| Q2 2026 | 88 +3 | 9.5M | $135.2M |
| Q1 2026 | 85 +2 | 7.6M | $80.9M |
| Q4 2025 | 83 +7 | 7.9M | $99.2M |
| Q3 2025 | 76 +8 | 7.4M | $75.0M |
| Q2 2025 | 68 -7 | 6.7M | $70.4M |
| Q1 2025 | 75 +2 | 6.8M | $49.4M |
| Q4 2024 | 73 +5 | 7.4M | $81.6M |
| Q3 2024 | 68 +10 | 5.8M | $71.2M |
| Q2 2024 | 58 +17 | 4.8M | $48.8M |
| Q1 2024 | 41 -2 | 3.1M | $36.9M |
| Q4 2023 | 43 | 3.5M | $27.4M |
| Q3 2023 | 43 +6 | 3.3M | $34.9M |
| Q2 2023 | 37 +5 | 3.3M | $35.8M |
| Q1 2023 | 32 +1 | 3.5M | $41.6M |
| Q4 2022 | 31 +3 | 3.6M | $12.7M |
| Q3 2022 | 28 | 3.8M | $17.0M |
| Q2 2022 | 28 +1 | 3.8M | $19.7M |
| Q1 2022 | 27 +1 | 3.7M | $20.5M |
| Q4 2021 | 26 +3 | 3.5M | $22.1M |
| Q3 2021 | 23 | 3.2M | $21.3M |
Q3 2021–Q2 2026, as reported on Form 13F. Earlier quarters are in the ownership explorer below.
Across other SEC filings
Fund holders · N-PORT
115 funds| Fund | Value | % of fund | As of |
|---|---|---|---|
| VANGUARD TOTAL STOCK MARKET INDEX FUND VTI | $8.5M | < 0.01% | Jun 2026 |
| iShares Russell 2000 ETF IWM | $6.6M | < 0.01% | Jun 2026 |
| Heartland Value Fund | $5.7M | 0.49% | Jun 2026 |
| DIAMOND HILL SMALL CAP FUND | $4.2M | 1.35% | Jun 2026 |
| Fidelity Small Cap Index Fund | $3.2M | < 0.01% | Jul 2026 |
| VANGUARD EXTENDED MARKET INDEX FUND | $2.8M | < 0.01% | Jun 2026 |
| iShares Russell 2000 Growth ETF IWO | $2.1M | 0.01% | Jun 2026 |
| Fidelity Extended Market Index Fund | $1.6M | < 0.01% | Aug 2026 |
| ACUITAS US MICROCAP FUND | $1.2M | 1.01% | Jun 2026 |
| North Star Micro Cap Fund | $1.1M | 0.62% | May 2026 |
115 funds reported holding $49,948,742 in total on their latest public Form N-PORT reports, the most recent dated August 2026.
Annual & quarterly reports
-
10-K · FY2025 Filed 2026-03-24Business · Risk Factors · Management's Discussion and Analysis
-
Management's Discussion and Analysis · Controls and Procedures · Legal Proceedings · Risk Factors
5%+ holders · 13D/G
2 filers| Filer | % of class | Filed |
|---|---|---|
| HOLD Alapkezelo Zrt 13G | 15.2% | 2026-10-28 |
| MAK CAPITAL ONE LLC 13G | 5.5% | 2026-08-07 |
Latest Schedule 13D or 13G from each filer naming this CUSIP; stakes a filer has reported closed are left out.
Insiders · Form 4
No open-market purchases or sales by Perma Fix insiders in the last 12 months.
Latest filings
- Richard Grondin 2026-10-29 Exercise
- Zach Paul Wamp 2026-10-02 Award
- Joe Reeder 2026-10-02 Award
- Larry Shelton 2026-10-02 Award
- Joseph Timothy Grumski 2026-10-02 Award
Ownership explorer
Loading ownership explorer…
Security Details
| CUSIP | 714157203 |
|---|---|
| FIGI | BBG001S75KJ1 |
| Symbol | PESI |
| Type | Common stock |
| Class | COM NEW as filed on 13F |
| Exchange | Nasdaq |
| Company | Perma Fix |
Other securities from this issuer
| Name | Symbol | CUSIP | Type |
|---|---|---|---|
| PERMA-FIX ENVIRONMENTAL SVCS | — | 714157112 | Common stock |
| PERMA-FIX ENVIRONMENTAL SVCS | — | 714157120 | Common stock |
| PFRVA-FIX ENVIRONMENTAL SVCS | — | 714157294 | Common stock |
Identifier History
| Type | Value | From | To |
|---|---|---|---|
| FIGI | BBG001S75KJ1 | 2026-02-07 | Current |
| CUSIP | 714157203 | 2013-10-16 | Current |
| CUSIP | 714157104 | 1996-06-30 | 2013-12-31 |
Listing History
| Symbol | Exchange | From | To |
|---|---|---|---|
| PESI | Nasdaq | 2004-03-22 | Current |