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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 51.32% institutional investors, 6.47% insiders, and 42.21% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 6.76% of PESI shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 2.82% of its assets in Perma-Fix Environmental Services shares.

PESI Ownership Benchmark

TypeName% Inst% Insiders% Retail
StockPerma-Fix Environmental Services51.32%6.47%42.21%
SectorIndustrials Stocks 66.29%16.54%17.17%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Blackrock funding, inc. /de1.25M6.76%$17.90M
Blackrock853.16K6.24%$8.64M
Mak capital one1.03M5.57%$14.76M
Vanguard group968.11K5.24%$12.19M
Vanguard capital management811.74K4.38%$11.60M
Prescott group capital management777.14K4.19%$11.11M
Diamond hill capital management642.53K3.47%$9.18M
Kennedy capital management610.90K3.29%$8.73M
Potomac capital management477.00K2.57%$6.82M
Geode capital management455.16K2.45%$6.51M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Fifth lane capital, lp18.00K15.77%$257.22K
Potomac capital management477.00K4.65%$6.82M
Mak capital one1.03M2.07%$14.76M
Prescott group capital management777.14K0.96%$11.11M
Perritt capital management175.30K0.84%$1.77M
Owls nest partners ia56.55K0.26%$808.17K
Heartland advisors400.00K0.25%$5.72M
Cm wealth advisors87.84K0.23%$1.26M
Myda advisors90.00K0.19%$1.29M
Diametric capital, lp114.71K0.17%$1.64M

Top Buyers

HolderShares% AssetsChange
Kennedy capital management610.90K0.15%610.90K
Blackrock853.16K0.00%577.96K
Diamond hill capital management642.53K0.07%286.56K
Potomac capital management477.00K4.65%180.30K
Susquehanna group, llp156.93K0.00%145.84K

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
Kennedy capital management610.90K0.15%610.90K$8.73M
Diametric capital, lp114.71K0.17%114.71K$1.64M
Cm wealth advisors87.84K0.23%87.84K$1.26M
Owls nest partners ia56.55K0.26%56.55K$808.17K
Sixth street partners management company45.25K0.00%45.25K$646.61K

Sold Out

HolderChange
Farther finance advisors-2.00
Pnc financial services group-8.00
Indiana trust & investment management-65.00
West paces advisors-125.00
Jones financial companies lllp-140.00

Institutional Ownership Trends

DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Jun 30, 2026935.68%9,515,79725.72%513.08%4826.32%19-24.00%
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%

Top Mutual Funds Shareholders

HolderShares% HoldingChange
Vanguard Total Stock Mkt Idx Inv597.75K2.82%-
Vanguard Morn Total Stk Mkt Idx Investor597.75K2.82%-
Vanguard US Total Market Shares ETF442.12K2.40%-
iShares Russell 2000 ETF450.23K2.12%-7.97K
Heartland Value Investor400.00K1.89%-
Heartland Value Strategy400.00K1.89%-
Kennedy Micro Cap371.25K1.75%371.25K
Diamond Hill Small Cap Equity355.30K1.68%20.21K
Diamond Hill Small Cap Inv309.77K1.46%18.90K
VanEck Environmental Svcs ETF187.04K1.01%2.31K

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 Q3--
2026 Q2--
2026 Q1--
2025 Q4--
2025 Q331

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 (1.25M shares, 6.76%), Blackrock (853.16K shares, 6.24%), and Mak capital one (1.03M shares, 5.57%). Together, they hold 18.57% 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?

Fifth lane capital, lp is Perma-Fix Environmental Services’s biggest shareholder by percentage of total assets invested, with 15.77% of its assets in 18K Perma-Fix Environmental Services shares, valued at 257.22K$.

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 2.82% of its total shares outstanding invested in 597.75K Perma-Fix Environmental Services shares.

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