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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 39.27% institutional investors, 7.27% insiders, and 53.46% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 6.33% of PESI shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 2.85% of its assets in Perma-Fix Environmental Services shares.

PESI Ownership Benchmark

TypeName% Inst% Insiders% Retail
StockPerma-Fix Environmental Services39.27%7.27%53.46%
SectorIndustrials Stocks 46.77%12.62%40.60%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Blackrock funding, inc. /de1.17M6.33%$11.79M
Blackrock853.16K6.24%$8.64M
Vanguard group935.94K5.07%$9.45M
Mak capital one815.58K4.42%$8.24M
Prescott group capital management777.14K4.21%$7.85M
Heartland advisors458.25K2.48%$4.63M
Geode capital management421.24K2.28%$4.26M
Diamond hill capital management401.56K2.18%$4.06M
State street298.39K1.62%$3.01M
Van eck associates220.29K1.19%$2.23M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Mak capital one815.58K1.27%$8.24M
Perritt capital management175.30K0.84%$1.77M
Prescott group capital management777.14K0.83%$7.85M
Essex investment management196.20K0.30%$1.98M
Heartland advisors458.25K0.24%$4.63M
Blue square asset management20.10K0.09%$203.01K
Guidance capital17.32K0.06%$241.32K
Legato capital management56.46K0.06%$570.24K
Pale fire capital se45.27K0.05%$457.23K
Oxler private wealth17.00K0.05%$171.75K

Top Buyers

HolderShares% AssetsChange
Mak capital one815.58K1.27%722.97K
Blackrock853.16K0.00%577.96K
Goldman sachs group64.25K0.00%64.25K
Van eck associates220.29K0.00%47.49K
Trexquant investment lp42.16K0.00%42.16K

Top Sellers

HolderShares% AssetsChange
Awm investment company---400.00K
Polar asset management partners---175.00K
Myda advisors---169.21K
Alyeska investment group---147.42K
Thompson siegel & walmsley---104.78K

New Positions

HolderShares% AssetsChangeValue
Trexquant investment lp42.16K0.00%42.16K$425.78K
Corsair capital management27.94K0.05%27.94K$282.22K
Blue square asset management20.10K0.09%20.10K$203.01K
Invesco19.54K-19.54K$197.93K
Guidance capital17.32K0.06%17.32K$241.32K

Sold Out

HolderChange
Indiana trust & investment management-65.00
West paces advisors-125.00
Planned solutions-700.00
Raymond james financial-1.16K
Venturi wealth management-3.00K

Institutional Ownership Trends

DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
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%
Dec 31, 202436-47.06%4,398,091-23.86%272.08%19-50.00%11-31.25%
Sep 30, 2024689.68%5,776,54919.91%362.95%38-13.64%16128.57%

Top Mutual Funds Shareholders

HolderShares% HoldingChange
Vanguard Total Stock Mkt Idx Inv526.32K2.85%-11.61K
Vanguard US Total Market Shares ETF442.12K2.40%-
iShares Russell 2000 ETF410.23K2.22%-
Heartland Value Investor400.00K2.17%-
Diamond Hill Small Cap Equity208.75K1.13%-409.00
VanEck Environmental Svcs ETF187.04K1.01%2.31K
Diamond Hill Small Cap Inv186.24K1.01%-
Vanguard Institutional Extnd Mkt Idx Tr177.51K0.96%-64.31K
Fidelity Small Cap Index172.85K0.94%730.00
Perritt MicroCap Opportunities Investor153.00K0.83%-10.00K

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
2025 Q4--
2025 Q331
2025 Q2-1
2025 Q18-
2024 Q4--

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, 6.33%), Blackrock (853.16K shares, 6.24%), and Vanguard group (935.94K shares, 5.07%). Together, they hold 17.64% 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?

Mak capital one is Perma-Fix Environmental Services’s biggest shareholder by percentage of total assets invested, with 1.27% of its assets in 815.58K Perma-Fix Environmental Services shares, valued at 8.24M$.

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 2.85% of its total shares outstanding invested in 526.32K Perma-Fix Environmental Services shares.

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