Company · Ownership research

PERMA FIX ENVIRONMENTAL SERVICES INC PESI

CIK 0000891532 · CUSIP 714157203

Insider tradingInitial holdingsInstitutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 714157203 (PESI), not CUSIP 714157903 (PESI), CUSIP 714157953 (PESI), and does not merge CUSIPs.

This page lists the top 20 of 59 rows by value; the complete set is available through the API.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	DIAMOND HILL CAPITAL MANAGEMENT INC CIK 1217541 · View history	$9.22M 589,061 shares	0.10%	-53.47K(-8.30%)Reduced	SEC filing ↗ Nov 10, 2026	▾
02	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$8.01M 511,530 shares	0.00%	+56.37K(+12.40%)Added	SEC filing ↗ Nov 6, 2026	▾
03	Quinn Opportunity Partners LLC CIK 1633275 · View history	$6.98M 445,852 shares	0.38%	+445.85KNew	SEC filing ↗ Nov 10, 2026	▾
04	STATE STREET CORP CIK 93751 · View history	$6.08M 388,669 shares	0.00%	+38.92K(+11.10%)Added	SEC filing ↗ Nov 12, 2026	▾
05	CenterBook Partners LP CIK 1872738 · View history	$5.62M 358,804 shares	0.26%	+358.80KNew	SEC filing ↗ Nov 2, 2026	▾
06	HEARTLAND ADVISORS INC CIK 937394 · View history	$4.70M 300,000 shares	0.23%	-100.00K(-25.00%)Reduced	SEC filing ↗ Nov 10, 2026	▾
07	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$2.89M 184,567 shares	0.00%	-6.50K(-3.40%)Reduced	SEC filing ↗ Nov 4, 2026	▾
08	Prescott Group Capital Management, L.L.C. CIK 1166152 · View history	$2.82M 180,492 shares	0.25%	-596.65K(-76.80%)Reduced	SEC filing ↗ Oct 30, 2026	▾
09	UBS Group AG CIK 1610520 · View history	$1.99M 126,970 shares	0.00%	+95.48K(+303.20%)Added	SEC filing ↗ Nov 10, 2026	▾
10	North Star Investment Management Corp. CIK 1342857 · View history	$1.89M 120,532 shares	0.10%	0(0.00%)Unchanged	SEC filing ↗ Oct 27, 2026	▾
11	CM WEALTH ADVISORS LLC CIK 1764581 · View history	$1.41M 90,133 shares	0.23%	+2.29K(+2.60%)Added	SEC filing ↗ Nov 10, 2026	▾
12	EXCHANGE TRADED CONCEPTS, LLC CIK 1457320 · View history	$1.24M 79,006 shares	0.01%	+79.01KNew	SEC filing ↗ Oct 28, 2026	▾
13	SEI INVESTMENTS CO CIK 350894 · View history	$956.97K 61,148 shares	0.00%	+20.13K(+49.10%)Added	SEC filing ↗ Nov 10, 2026	▾
14	Bank of New York Mellon Corp CIK 1390777 · View history	$658.08K 42,050 shares	0.00%	+3.95K(+10.40%)Added	SEC filing ↗ Nov 5, 2026	▾
15	Squarepoint Ops LLC CIK 1642575 · View history	$527.36K 33,697 shares	0.00%	+2.72K(+8.80%)Added	SEC filing ↗ Nov 9, 2026	▾
16	IMC-Chicago, LLC CIK 1452861 · View history	$514.45K 32,872 shares	0.00%	+16.41K(+99.60%)Added	SEC filing ↗ Nov 5, 2026	▾
17	Nuveen, LLC CIK 1871926 · View history	$417.42K 26,672 shares	0.00%	+4.22K(+18.80%)Added	SEC filing ↗ Nov 10, 2026	▾
18	Quantbot Technologies LP CIK 1512991 · View history	$403.99K 25,814 shares	0.02%	+25.81KNew	SEC filing ↗ Nov 12, 2026	▾
19	Creative Planning CIK 1540235 · View history	$362.60K 23,169 shares	0.00%	+23.17KNew	SEC filing ↗ Nov 2, 2026	▾
20	THOMPSON DAVIS & CO., INC. CIK 1017284 · View history	$358.39K 22,900 shares	0.24%	+22.90KNew	SEC filing ↗ Nov 5, 2026	▾

Showing 20 / 59 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

3,873,867

Not deduplicated across managers

Disclosed value

$60.58M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

PERMA FIX ENVIRONMENTAL SERVICES INC · Q3 2026

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{"action":"holders","cusip":"714157203","quarter":"2026Q3","type":"positions","page_size":100}

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.