Who owns PERMA FIX ENVIRONMENTAL SERVICES INC?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from SEC filings.
Institutional ownership of PESI from SEC Form 13F filings across 62 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 62 institutions disclosed 4.9M shares of PERMA FIX ENVIRONMENTAL SERVICES INC worth $69.3M — about 24.6% of shares outstanding; the largest disclosed holder is BlackRock, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
62
13F holders
$69.3M
value, 2026 filers
24.6%
of shares outstanding (4.9M sh)
11
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of PESI's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 1.3M | $17.9M | 0.0% | 6.3% | +7.0% |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | 811,743 | $11.6M | 0.0% | 4.1% | -46.6% |
| 3 | Potomac Capital Management, Inc. | 477,000 | $6.8M | 4.7% | 2.4% | +60.8% |
| 4 | GEODE CAPITAL MANAGEMENT, LLC | 455,156 | $6.5M | 0.0% | 2.3% | +5.2% |
| 5 | GOLDMAN SACHS GROUP INC | 162,755 | $2.3M | 0.0% | 0.8% | +14.1% |
| 6 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 156,934 | $2.2M | 0.0% | 0.8% | +1314.1% |
| 7 | CITADEL ADVISORS LLC | 152,626 | $2.2M | 0.0% | 0.8% | +120.2% |
| 8 | NORTHERN TRUST CORP | 141,639 | $2.0M | 0.0% | 0.7% | +9.3% |
| 9 | VANGUARD FIDUCIARY TRUST CO | 123,040 | $1.8M | 0.0% | 0.6% | +3.2% |
| 10 | VANGUARD PORTFOLIO MANAGEMENT LLC | 121,267 | $1.7M | 0.0% | 0.6% | +20.9% |
| 11 | North Star Investment Management Corp. | 120,532 | $1.7M | 0.1% | 0.6% | 0.0% |
| 12 | Diametric Capital, LPNEW | 114,714 | $1.6M | 0.2% | 0.6% | new |
| 13 | MYDA Advisors LLC | 90,000 | $1.3M | 0.2% | 0.5% | -25.0% |
| 14 | MORGAN STANLEY | 53,084 | $758,571 | 0.0% | 0.3% | +98.7% |
| 15 | JANE STREET GROUP, LLC | 46,651 | $666,643 | 0.0% | 0.2% | +63.5% |
| 16 | Sixth Street Partners Management Company, L.P.NEW | 45,249 | $646,608 | 0.1% | 0.2% | new |
| 17 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 45,249 | $646,608 | 0.0% | 0.2% | +3.8% |
| 18 | BANK OF AMERICA CORP /DE/ | 41,371 | $591,192 | 0.0% | 0.2% | -8.5% |
| 19 | SEI INVESTMENTS CONEW | 41,022 | $586,204 | 0.0% | 0.2% | new |
| 20 | Bank of New York Mellon Corp | 38,101 | $544,457 | 0.0% | 0.2% | -5.6% |
| 21 | ALLIANCEBERNSTEIN L.P.NEW | 32,850 | $351,167 | 0.0% | 0.2% | new |
| 22 | UBS Group AG | 31,493 | $450,035 | 0.0% | 0.2% | -49.3% |
| 23 | Squarepoint Ops LLC | 30,976 | $442,647 | 0.0% | 0.2% | -40.4% |
| 24 | WELLS FARGO & COMPANY/MN | 29,303 | $418,740 | 0.0% | 0.1% | +40.7% |
| 25 | D. E. Shaw & Co., Inc. | 24,858 | $355,221 | 0.0% | 0.1% | -60.5% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.