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Perma-Fix Environmental Services Ownership | Who Owns Perma-Fix Environmental Services?

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Perma-Fix Environmental Services Ownership Summary

Perma-Fix Environmental Services is owned by 40.89% institutional investors, 7.32% insiders, and 51.79% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 6.32% of PESI shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 2.97% of its assets in Perma-Fix Environmental Services shares.

PESI Ownership Benchmark

TypeName% Inst% Insiders% Retail
StockPerma-Fix Environmental Services40.89%7.32%51.79%
SectorIndustrials Stocks 49.74%15.70%34.56%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Blackrock funding, inc. /de1.17M6.32%$12.51M
Blackrock853.16K6.24%$8.64M
Vanguard group968.11K5.24%$12.19M
Mak capital one918.67K4.96%$9.82M
Prescott group capital management777.14K4.20%$8.31M
Geode capital management432.70K2.34%$4.63M
Heartland advisors400.00K2.16%$4.28M
Diamond hill capital management355.98K1.92%$3.81M
State street335.55K1.81%$3.59M
Potomac capital management296.70K1.60%$3.17M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Potomac capital management296.70K2.76%$3.17M
Mak capital one918.67K1.45%$9.82M
Perritt capital management175.30K0.84%$1.77M
Prescott group capital management777.14K0.83%$8.31M
Heartland advisors400.00K0.22%$4.28M
Myda advisors120.00K0.21%$1.28M
Greenhaven road investment management11.30K0.08%$120.45K
North star investment management120.53K0.08%$1.29M
Corsair capital management37.65K0.06%$402.47K
Oxler private wealth17.00K0.06%$181.78K

Top Buyers

HolderShares% AssetsChange
Blackrock853.16K0.00%577.96K
Group one trading247.67K0.01%243.65K
Vanguard fiduciary trust119.25K0.00%119.25K
North star investment management120.53K0.08%116.13K
Goldman sachs group142.69K0.00%70.75K

Top Sellers

HolderShares% AssetsChange
Awm investment company---400.00K
Van eck associates---220.29K
Essex investment management---196.20K
Polar asset management partners---175.00K
Alyeska investment group---147.42K

New Positions

HolderShares% AssetsChangeValue
Vanguard fiduciary trust119.25K0.00%119.25K$1.27M
Trexquant investment lp42.16K0.00%42.16K$425.78K
Xtx topco23.23K0.00%23.23K$248.30K
Brown advisory20.00K0.00%20.00K$213.80K
Imc-chicago16.93K0.00%16.93K$181.01M

Sold Out

HolderChange
Eversource wealth advisors-3.00
Srs capital advisors-9.00
Indiana trust & investment management-65.00
West paces advisors-125.00
Amalgamated bank-544.00

Institutional Ownership Trends

DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Mar 31, 202687-7,569,036-3.90%402.25%385.56%25-10.71%
Dec 31, 202558-27.50%5,917,672-20.25%321.98%27-34.15%16-27.27%
Sep 30, 20257816.42%7,245,2769.93%393.08%4017.65%2110.53%
Jun 30, 202571-6.58%6,610,635-0.92%352.73%34-19.05%2025.00%
Mar 31, 202576-6,671,805-8.49%361.70%4216.67%17-26.09%

Top Mutual Funds Shareholders

HolderShares% HoldingChange
Vanguard Total Stock Mkt Idx Inv550.97K2.97%-
Vanguard US Total Market Shares ETF442.12K2.40%-
iShares Russell 2000 ETF405.43K2.19%3.43K
Heartland Value Investor400.00K2.16%-
Heartland Value Strategy400.00K2.16%-
Diamond Hill Small Cap Equity229.49K1.24%8.20K
Diamond Hill Small Cap Inv195.09K1.05%8.05K
Vanguard Institutional Extnd Mkt Idx Tr188.63K1.02%5.50K
VanEck Environmental Svcs ETF187.04K1.01%2.31K
Fidelity Small Cap Index169.10K0.91%899.00

Recent Insider Transactions

DateNameRoleActivityValue
Sep 16, 2025Duggan Kerry C-Sell$48.62K
Sep 11, 2025Duff Mark President and CEOBuy$7.22K
Sep 11, 2025Shelton Larry-Buy$8.58K
Sep 09, 2025Shelton Larry-Buy$9.61K
May 30, 2025Duggan Kerry C-Sell$181.64K

Insider Transactions Trends

DateBuySell
2026 Q2--
2026 Q1--
2025 Q4--
2025 Q331
2025 Q2-1

PESI Ownership FAQ

Who owns the most shares of Perma-Fix Environmental Services?

Perma-Fix Environmental Services’s largest shareholders are Blackrock funding, inc. /de (1.17M shares, 6.32%), Blackrock (853.16K shares, 6.24%), and Vanguard group (968.11K shares, 5.24%). Together, they hold 17.80% of Perma-Fix Environmental Services’s total shares outstanding.

Does Blackrock own Perma-Fix Environmental Services?

Yes, BlackRock owns 6.24% of Perma-Fix Environmental Services, totaling 853.16K shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 8.64M$. In the last quarter, BlackRock increased its holdings by 577.96K shares, a 210.01% change.

Who is Perma-Fix Environmental Services’s biggest shareholder by percentage of total assets invested?

Potomac capital management is Perma-Fix Environmental Services’s biggest shareholder by percentage of total assets invested, with 2.76% of its assets in 296.7K Perma-Fix Environmental Services shares, valued at 3.17M$.

Who is the top mutual fund holder of Perma-Fix Environmental Services shares?

Vanguard Total Stock Mkt Idx Inv is the top mutual fund holder of Perma-Fix Environmental Services shares, with 2.97% of its total shares outstanding invested in 550.97K Perma-Fix Environmental Services shares.

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