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 35.83% institutional investors, 7.31% insiders, and 56.86% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 6.40% 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

Type	Name	% Inst	% Insiders	% Retail
Stock	Perma-Fix Environmental Services	35.83%	7.31%	56.86%
Sector	Industrials Stocks	64.07%	12.69%	23.24%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock funding, inc. /de	1.18M	6.40%	$12.42M
Blackrock	853.16K	6.24%	$8.64M
Vanguard group	868.96K	5.50%	$9.62M
Prescott group capital management	777.14K	4.21%	$8.18M
Heartland advisors	400.00K	2.53%	$4.43M
Geode capital management	327.12K	2.07%	$3.62M
Diamond hill capital management	315.52K	2.00%	$3.49M
Essex investment management	192.33K	1.22%	$2.13M
State street	147.60K	1.08%	$1.50M
Ancora advisors	180.79K	0.98%	$1.90M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Prescott group capital management	777.14K	0.96%	$8.18M
Perritt capital management	176.70K	0.96%	$1.86M
Essex investment management	192.33K	0.38%	$2.13M
Myda advisors	169.21K	0.31%	$1.78M
Commons capital	30.35K	0.24%	$319.28K
Heartland advisors	400.00K	0.24%	$4.43M
Mak capital one	92.61K	0.14%	$974.26K
Blue square asset management	20.10K	0.09%	$203.01K
Legato capital management	56.46K	0.07%	$593.95K
Oxler private wealth	17.00K	0.06%	$178.89K

Top Buyers

Holder	Shares	% Assets	Change
Blackrock	853.16K	0.00%	577.96K
Vanguard group	868.96K	0.00%	116.88K
State street	147.60K	0.00%	100.42K
Mak capital one	92.61K	0.14%	92.61K
Blackrock funding, inc. /de	1.18M	0.00%	87.96K

Top Sellers

Holder	Shares	% Assets	Change
Awm investment company	-	-	-400.00K
Polar asset management partners	-	-	-175.00K
Alyeska investment group	-	-	-147.42K
Thompson siegel & walmsley	-	-	-104.78K
Heartland advisors	400.00K	0.24%	-100.00K

New Positions

Holder	Shares	% Assets	Change	Value
Mak capital one	92.61K	0.14%	92.61K	$974.26K
Blue square asset management	20.10K	0.09%	20.10K	$203.01K
Invesco	19.54K	-	19.54K	$197.93K
Xtx topco	18.96K	0.01%	18.96K	$199.42K
Marshall wace, llp	18.41K	0.00%	18.41K	$193.62K

Sold Out

Holder	Change
Indiana trust & investment management	-65.00
West paces advisors	-125.00
Planned solutions	-700.00
Pnc financial services group	-1.09K
Venturi wealth management	-3.00K

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2025	71	-6.58%	6,610,635	-0.92%	35	2.73%	34	-19.05%	20	25.00%
Mar 31, 2025	76	-	6,671,805	-8.49%	36	1.70%	42	16.67%	17	-26.09%
Dec 31, 2024	36	-47.06%	4,398,091	-23.86%	27	2.08%	19	-50.00%	11	-31.25%
Sep 30, 2024	68	9.68%	5,776,549	19.91%	36	2.95%	38	-13.64%	16	128.57%
Jun 30, 2024	62	44.19%	4,817,296	55.21%	35	6.67%	44	214.29%	7	-46.15%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard Total Stock Mkt Idx Inv	526.32K	2.85%	-11.61K
Vanguard US Total Market Shares ETF	442.12K	2.40%	-
iShares Russell 2000 ETF	410.23K	2.22%	-
Heartland Value Investor	400.00K	2.17%	-
Diamond Hill Small Cap Equity	208.75K	1.13%	-409.00
VanEck Environmental Svcs ETF	187.04K	1.01%	2.31K
Diamond Hill Small Cap Inv	186.24K	1.01%	-
Vanguard Institutional Extnd Mkt Idx Tr	177.51K	0.96%	-64.31K
Fidelity Small Cap Index	172.85K	0.94%	730.00
Perritt MicroCap Opportunities Investor	153.00K	0.83%	-10.00K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Sep 16, 2025	Duggan Kerry C	-	Sell	$48.62K
Sep 11, 2025	Duff Mark	President and CEO	Buy	$7.22K
Sep 11, 2025	Shelton Larry	-	Buy	$8.58K
Sep 09, 2025	Shelton Larry	-	Buy	$9.61K
May 30, 2025	Duggan Kerry C	-	Sell	$181.64K

Insider Transactions Trends

Date	Buy	Sell
2025 Q4	-	-
2025 Q3	3	1
2025 Q2	-	1
2025 Q1	8	-
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 (1.18M shares, 6.40%), Blackrock (853.16K shares, 6.24%), and Vanguard group (868.96K shares, 5.50%). Together, they hold 18.14% 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?

Prescott group capital management is Perma-Fix Environmental Services’s biggest shareholder by percentage of total assets invested, with 0.96% of its assets in 777.14K Perma-Fix Environmental Services shares, valued at 8.18M$.

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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