undamentalytics Newsletter

Perma FIX Environmental Services Inc: which funds bought and sold

Institutions that bought and sold Perma FIX Environmental Services shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 48 institutions that filed 13F reports for both quarters added to or opened positions in Perma FIX Environmental Services, and 26 cut or closed them. Together they added a net 1.9M shares, +25.1% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 988K shares (+168.4%); index fund managers were net buyers of 209K shares (+6.7%). 14 opened a new position and 9 sold out entirely.

Bought, Q2 2026 48 institutions, 14 of them new holders Sold, Q2 2026 26 institutions, 9 of them sold out
Net change, all compared +1.9M shares (+25.1%)
Net change, active managers +988K shares (+168.4%), 8 bought, 4 sold

Buyers versus sellers

institutions compared, 97
Active managers and hedge funds 8 bought · 4 sold · +988K
Index fund managers 8 bought · 1 sold · +209K
Other institutions 32 bought · 21 sold · +704K

Biggest buyers

by change in shares held
Biggest buyers
Institution Change in shares Shares June 30, 2026 Value
Kennedy Capital Management LLC Active manager +611K New position 611K $8.7M
Diamond Hill Capital Management, LLC (Investment Advisor) Active manager +287K +80.5% 643K $9.2M
Potomac Capital Management, Inc. +180K +60.8% 477K $6.8M
Susquehanna International Group, LLP +146K +1314.1% 157K $2.2M
Diametric Capital, LP +115K New position 115K $1.6M
Mak Capital One LLC +114K +12.4% 1.0M $14.8M
Cm Wealth Advisors LLC +88K New position 88K $1.3M
Citadel Advisors LLC Hedge fund +83K +120.2% 153K $2.2M
Blackrock, Inc. Index funds +82K +7.0% 1.3M $17.9M
Owls Nest Partners Ia, LLC +57K New position 57K $808,171
Vanguard Capital Management LLC Index funds +52K +6.9% 812K $11.6M
Sei Investments Co +41K New position 41K $586,204
Xtx Topco Ltd +40K +170.8% 63K $898,670
Alliancebernstein L.P. Active manager +33K New position 33K $351,167
Dimensional Fund Advisors LP +27K +16.7% 191K $2.7M
Morgan Stanley +26K +98.7% 53K $758,571
Geode Capital Management, LLC Index funds +22K +5.2% 455K $6.5M
Trexquant Investment LP Hedge fund +22K New position 22K $313,637
Vanguard Portfolio Management LLC Index funds +21K +20.9% 121K $1.7M
Goldman Sachs Group Inc +20K +14.1% 163K $2.3M

Biggest sellers

by change in shares held
Biggest sellers
Institution Change in shares Shares June 30, 2026 Value
Group One Trading LLC −125K −50.5% 123K $1.8M
D. E. Shaw & Co., Inc. Hedge fund −38K −60.5% 25K $355,221
UBS Group AG −31K −49.3% 31K $450,035
Myda Advisors LLC −30K −25.0% 90K $1.3M
Squarepoint Ops LLC Hedge fund −21K −40.4% 31K $442,647
Gsa Capital Partners LLP −16K Sold out 0 —
Fermata Advisors, LLC −13K Sold out 0 —
Greenhaven Road Investment Management, L.P. −11K Sold out 0 —
Invesco Ltd. −11K Sold out 0 —
American Century Companies Inc Active manager −11K Sold out 0 —
Bank Of America Corp −3,819 −8.5% 41K $591,192
Bank Of New York Mellon Corp −2,278 −5.6% 38K $544,457
BNP Paribas Financial Markets −1,187 −32.4% 2,482 $35,468
California State Teachers Retirement System −693 −74.0% 243 $3,472
Barclays PLC −565 −17.3% 2,708 $38,697
FMR LLC Active manager −545 −11.5% 4,181 $59,747
Rhumbline Advisers Index funds −531 −2.5% 21K $298,353
Rockefeller Capital Management L.P. −500 Sold out 0 —
Imc-Chicago, LLC −468 −2.8% 16K $235,285
Sterling Capital Management LLC −400 −79.8% 101 $1,443

New positions

largest by value
InstitutionSharesValue June 30, 2026
Kennedy Capital Management LLCActive manager 611K $8.7M
Diametric Capital, LP 115K $1.6M
Cm Wealth Advisors LLC 88K $1.3M
Owls Nest Partners Ia, LLC 57K $808,171
Sei Investments Co 41K $586,204
Alliancebernstein L.P.Active manager 33K $351,167
Trexquant Investment LPHedge fund 22K $313,637
Quadrature Capital LtdHedge fund 19K $271,038
Fifth Lane Capital, LP 18K $257,220
Persistent Asset Partners Ltd 3,912 $55,902

Sold out

largest by value

Who holds the shares

13F holdings at June 30, 2026
Institutions reporting
89
Ten largest holders
71.9%
of 13F-reported shares
Index fund managers
35.1%
of 13F-reported shares
Active managers and hedge funds
16.6%
of 13F-reported shares
Buying and selling by type of institution, March 31, 2026 to June 30, 2026
TypeBoughtSoldNewSold outNet change in sharesNet %
Active managers and hedge funds 8 4 4 1 +988K +168.4%
Index fund managers 8 1 0 0 +209K +6.7%
Other institutions 32 21 10 8 +704K +18.2%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

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