Perma Fix Environmental Services Inc
PESI- Exchange
- Nasdaq
- Industry
- Hazardous Waste Management
- SEC CIK
- 0000891532
No open-market purchases or sales by Perma Fix Environmental Services Inc insiders were filed in the last 90 days; 88 institutions reported holding it in 13F filings for Q2 2026, worth $135.2M in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in Perma Fix Environmental Services Inc as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 85
- +4 vs. Q4 2025
- Shares held
- 7.57M
- +827.5K (+12.3%) vs. Q4 2025
- Total value
- $80.9M
- −$4.00M (−4.7%) vs. Q4 2025
- New holders
- 17
- 20 more added
- Sold out
- 13
- 26 more reduced
3 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting PESI on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 88 | $135.2M |
| Q1 2026 | 85 | $80.9M |
| Q4 2025 | 84 | $99.2M |
| Q3 2025 | 77 | $75.0M |
| Q2 2025 | 70 | $70.4M |
| Q1 2025 | 76 | $49.4M |
| Q4 2024 | 74 | $81.6M |
| Q3 2024 | 68 | $71.2M |
| Q2 2024 | 58 | $48.8M |
| Q1 2024 | 41 | $36.9M |
| Q4 2023 | 43 | $27.4M |
| Q3 2023 | 43 | $34.9M |
| Q2 2023 | 37 | $35.8M |
| Q1 2023 | 32 | $41.6M |
| Q4 2022 | 30 | $12.7M |
| Q3 2022 | 28 | $17.0M |
| Q2 2022 | 29 | $19.7M |
| Q1 2022 | 29 | $20.7M |
| Q4 2021 | 29 | $22.1M |
| Q3 2021 | 24 | $21.3M |
| Q2 2021 | 24 | $22.8M |
| Q1 2021 | 24 | $23.8M |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Perma Fix Environmental Services Inc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 1,170,303 | $12.5M | 0.00% | −27,682−2.3% | Reduced |
| Mak Capital One LLC | 918,673 | $9.82M | 1.63% | 00.0% | Unchanged |
| Prescott Group Capital Management, L.L.C. | 777,142 | $8.31M | 0.83% | 00.0% | Unchanged |
| Vanguard Capital Management LLC | 759,435 | $8.12M | 0.00% | +759,435 | New |
| Geode Capital Management, LLC | 432,701 | $4.63M | 0.00% | +9,811+2.3% | Added |
| Heartland Advisors Inc | 400,000 | $4.28M | 0.22% | 00.0% | Unchanged |
| Diamond Hill Capital Management Inc | 355,978 | $3.81M | 0.02% | −30,865−8.0% | Reduced |
| State Street Corp | 335,547 | $3.59M | 0.00% | +23,280+7.5% | Added |
| Potomac Capital Management, Inc. | 296,700 | $3.17M | 2.77% | −45,100−13.2% | Reduced |
| Group One Trading, L.P. | 247,674 | $2.65M | 0.09% | +243,647+6,050.3% | Added |
| Dimensional Fund Advisors LP | 163,787 | $1.75M | 0.00% | −1,000−0.6% | Reduced |
| Goldman Sachs Group Inc | 142,687 | $1.53M | 0.00% | +70,750+98.3% | Added |
| Northern Trust Corp | 129,568 | $1.39M | 0.00% | +6,059+4.9% | Added |
| North Star Investment Management Corp. | 120,532 | $1.29M | 0.08% | +116,132+2,639.4% | Added |
| MYDA Advisors LLC | 120,000 | $1.28M | 0.30% | +20,000+20.0% | Added |
| Vanguard Fiduciary Trust Co | 119,253 | $1.27M | 0.00% | +119,253 | New |
| Vanguard Portfolio Management LLC | 100,318 | $1.07M | 0.00% | +100,318 | New |
| Citadel Advisors LLC | 69,313 | $741.0K | 0.00% | +33,184+91.8% | Added |
| D. E. Shaw & Co., Inc. | 62,989 | $673.4K | 0.00% | −33,020−34.4% | Reduced |
| UBS Group AG | 62,082 | $663.7K | 0.00% | +33,118+114.3% | Added |
| Squarepoint Ops LLC | 51,940 | $555.2K | 0.00% | +15,098+41.0% | Added |
| Pale Fire Capital SE | 48,626 | $519.8K | 0.05% | +5,406+12.5% | Added |
| Bank of America Corp | 45,190 | $483.1K | 0.00% | +1,524+3.5% | Added |
| Charles Schwab Investment Management Inc | 43,590 | $466.0K | 0.00% | −5,017−10.3% | Reduced |
| Bank of New York Mellon Corp | 40,379 | $431.6K | 0.00% | −3,680−8.4% | Reduced |
| Corsair Capital Management, L.P. | 37,649 | $402.5K | 0.06% | +16,000+73.9% | Added |
| Simplex Trading, LLC | 31,318 | $334.8K | 0.01% | +31,318 | New |
| GatePass Capital, LLC | 29,742 | $317.9K | 0.15% | −35,000−54.1% | Reduced |
| Jane Street Group, LLC | 28,525 | $304.9K | 0.00% | −115,714−80.2% | Reduced |
| Morgan Stanley | 26,718 | $285.6K | 0.00% | −40,013−60.0% | Reduced |
| XTX Topco Ltd | 23,227 | $248.3K | 0.00% | +23,227 | New |
| Nuveen, LLC | 22,454 | $240.0K | 0.00% | 00.0% | Unchanged |
| Rhumbline Advisers | 21,410 | $228.9K | 0.00% | −13−0.1% | Reduced |
| Wells Fargo & Company | 20,830 | $222.7K | 0.00% | −11,296−35.2% | Reduced |
| Sentinus, LLC | 20,600 | $220.2K | 0.02% | −145,700−87.6% | Reduced |
| Brown Advisory Inc | 20,000 | $213.8K | 0.00% | +20,000 | New |
| Guidance Capital, Inc | 16,302 | $210.8K | 0.05% | −883−5.1% | Reduced |
| Bailard, Inc. | 17,800 | $190.3K | 0.00% | 00.0% | Unchanged |
| Oxler Private Wealth LLC | 17,005 | $181.8K | 0.06% | 00.0% | Unchanged |
| IMC-Chicago, LLC | 16,933 | $181.0K | 0.00% | +16,933 | New |
| Quent Capital, LLC | 16,199 | $173.2K | 0.01% | 00.0% | Unchanged |
| Gsa Capital Partners LLP | 16,097 | $172.0K | 0.01% | +16,097 | New |
| Advisor Group Holdings, Inc. | 16,000 | $171.0K | 0.00% | +100+0.6% | Added |
| Deutsche Bank AG | 14,621 | $156.3K | 0.00% | +2,628+21.9% | Added |
| Fermata Advisors, LLC | 12,936 | $138.3K | 0.03% | +301+2.4% | Added |
| Greenhaven Road Investment Management, L.P. | 11,303 | $120.5K | 0.08% | +11,303 | New |
| Price T Rowe Associates Inc | 11,202 | $120.0K | 0.00% | 00.0% | Unchanged |
| Invesco Ltd. | 11,135 | $119.0K | 0.00% | +11,135 | New |
| Susquehanna International Group, LLP | 11,098 | $118.6K | 0.00% | −87,171−88.7% | Reduced |
| American Century Companies Inc | 10,692 | $114.3K | 0.00% | +10,692 | New |
| Vident Advisory, LLC | 10,390 | $111.1K | 0.00% | +10,390 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 8,223 | $87.9K | 0.00% | +204+2.5% | Added |
| JPMorgan Chase & Co | 7,082 | $73.7K | 0.00% | −58−0.8% | Reduced |
| Vanguard Global Advisers, LLC | 5,742 | $61.4K | 0.00% | +5,742 | New |
| Police & Firemen's Retirement System of New Jersey | 5,649 | $60.4K | 0.00% | 00.0% | Unchanged |
| Capital Advisors, Ltd. LLC | 5,000 | $53.0K | 0.01% | +5,000 | New |
| MetLife Investment Management | 4,922 | $52.6K | 0.00% | −4,232−46.2% | Reduced |
| FMR LLC | 4,726 | $50.5K | 0.00% | −978−17.1% | Reduced |
| New York State Common Retirement Fund | 4,400 | $47.0K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 3,669 | $39.2K | 0.00% | −151−4.0% | Reduced |
| Barclays PLC | 3,273 | $35.0K | 0.00% | −23,708−87.9% | Reduced |
| Russell Investments Group, Ltd. | 1,732 | $18.5K | 0.00% | +120+7.4% | Added |
| Legal & General Group Plc | 1,558 | $16.7K | 0.00% | −53−3.3% | Reduced |
| Tower Research Capital LLC (TRC) | 1,528 | $16.3K | 0.00% | −1,654−52.0% | Reduced |
| Ameritas Investment Partners, Inc. | 1,232 | $13.2K | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 936 | $10.0K | 0.00% | −129−12.1% | Reduced |
| Citigroup Inc | 819 | $8.76K | 0.00% | +428+109.5% | Added |
| Sterling Capital Management LLC | 501 | $5.36K | 0.00% | −359−41.7% | Reduced |
| Rockefeller Capital Management L.P. | 500 | $5.34K | 0.00% | 00.0% | Unchanged |
| GAMMA Investing LLC | 214 | $2.29K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 195 | $2.08K | 0.00% | +78+66.7% | Added |
| Optiver Holding B.V. | 170 | $1.82K | 0.00% | −128−43.0% | Reduced |
| Jones Financial Companies LLLP | 140 | $1.49K | 0.00% | +140 | New |
| Royal Bank of Canada | 50 | $1.00K | 0.00% | −977−95.1% | Reduced |
| Nisa Investment Advisors, LLC | 71 | $759 | 0.00% | 00.0% | Unchanged |
| Torren Management, LLC | 53 | $567 | 0.00% | 00.0% | Unchanged |
| Rothschild Investment LLC | 20 | $214 | 0.00% | 00.0% | Unchanged |
| Caitong International Asset Management Co., Ltd | 14 | $150 | 0.00% | +14 | New |
| Essential Partners LLC | 9 | $96 | 0.00% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 8 | $86 | 0.00% | 00.0% | Unchanged |
| Sunbelt Securities, Inc. | 7 | $75 | 0.00% | 00.0% | Unchanged |
| CoreCap Advisors, LLC | 5 | $53 | 0.00% | 00.0% | Unchanged |
| Farther Finance Advisors, LLC | 2 | $22 | 0.00% | +2 | New |
| Morgan Dempsey Capital Management LLC | 1 | $11 | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 1 | $11 | 0.00% | 00.0% | Unchanged |
| EAM Investors, LLC | 0 | $0 | 0.00% | −64,784−100.0% | Sold out |
| Ancora Advisors, LLC | 0 | $0 | 0.00% | −57,927−100.0% | Sold out |
| SEI Investments Co | 0 | $0 | 0.00% | −39,442−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −38,617−100.0% | Sold out |
| ARS Investment Partners, LLC | 0 | $0 | 0.00% | −36,145−100.0% | Sold out |
| Los Angeles Capital Management LLC | 0 | $0 | 0.00% | −22,960−100.0% | Sold out |
| Brookwood Investment Group LLC | 0 | $0 | 0.00% | −20,873−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −14,585−100.0% | Sold out |
| Flagship Harbor Advisors, LLC | 0 | $0 | 0.00% | −910−100.0% | Sold out |
| Amalgamated Bank | 0 | $0 | 0.00% | −544−100.0% | Sold out |
| SRS Capital Advisors, Inc. | 0 | $0 | 0.00% | −9−100.0% | Sold out |
| EverSource Wealth Advisors, LLC | 0 | $0 | 0.00% | −3−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Perritt Capital Management Inc | – | – | – | – | Not filed |