PESI

Perma-Fix Environmental Svcs$19.43 11.35%
UtilitiesUSCUSIP 714157203· EOD Aug 12, 2026◍ Confluence graph
Tracked 13F Holders
81
-61 QoQ
13F Value (tracked)
$80.2M
Insider Net · 180d
$0
0↑ 0↓
Recent Filings
15
Smart-money sentimentBullish
BearishBullish
13F funds (latest Q)18 adding · 3 trimming
Insider net (180d)$0

Price & smart-money activity

$19.43 11.35%5Y +233.8%
$2.11$6.76$11.41$16.06$20.71202120222023202420252026434434465312747427265107687386947881481391013312101015101422
Hover for who · click for detailEnd-of-day closing prices52w $8.19 – $19.43

Who owns PESI?

81 tracked 13F filers

81 tracked 13F filers disclose a position in PESI as of the latest SEC 13F filings, a combined $80.2M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

All quarters use one ordinary-share-equivalent series. Historical ADS are converted at 2 ADS = 1 ordinary share. Expand a row for the exact calculation; the residual is not classified as a trade.
#FundPosition valueSharesLast moveAs ofHistory
1BlackRock, Inc.
$12.5M
1.2M
−2.3%
Reduced · −28K sh
Q1 2026
2PRESCOTT GROUP CAPITAL MANAGEMENT, L.L.C.
$11.1M
777K
Held
Q2 2026
3VANGUARD CAPITAL MANAGEMENT LLC
$8.1M
759K
First observed position
No prior filed position
Q1 2026
4DIAMOND HILL CAPITAL MANAGEMENT INC
$9.2M
643K
+80%
Added · +287K sh
Q2 2026
5GEODE CAPITAL MANAGEMENT, LLC
$6.5M
455K
+5.2%
Added · +22K sh
Q2 2026
6HEARTLAND ADVISORS INC
$5.7M
400K
Held
Q2 2026
7STATE STREET CORP
$5.0M
350K
+4.2%
Added · +14K sh
Q2 2026
8GROUP ONE TRADING LLC
$2.6M
248K
62×
Added · +244K sh
Q1 2026
9DIMENSIONAL FUND ADVISORS LP
$1.8M
164K
−0.6%
Reduced · −1K sh
Q1 2026
10GOLDMAN SACHS GROUP INC
$1.5M
143K
+98%
Added · +71K sh
Q1 2026
11NORTHERN TRUST CORP
$1.4M
130K
+4.9%
Added · +6K sh
Q1 2026
12VANGUARD FIDUCIARY TRUST CO
$1.3M
119K
First observed position
No prior filed position
Q1 2026
13Diametric Capital, LP
$1.6M
115K
New
+115K sh
Q2 2026
14VANGUARD PORTFOLIO MANAGEMENT LLC
$1.1M
100K
First observed position
No prior filed position
Q1 2026
15CITADEL ADVISORS LLC
$741K
69K
+92%
Added · +33K sh
Q1 2026
16D. E. Shaw & Co., Inc.
$673K
63K
−34%
Reduced · −33K sh
Q1 2026
17UBS Group AG
$664K
62K
+114%
Added · +33K sh
Q1 2026
18Squarepoint Ops LLC
$555K
52K
+41%
Added · +15K sh
Q1 2026
19Sixth Street Partners Management Company, L.P.
$647K
45K
New
+45K sh
Q2 2026
20BANK OF AMERICA CORP /DE/
$483K
45K
+3.5%
Added · +2K sh
Q1 2026
21GatePass Capital, LLC
$639K
45K
+50%
Added · +15K sh
Q2 2026
22CHARLES SCHWAB INVESTMENT MANAGEMENT INC
$466K
44K
−10%
Reduced · −5K sh
Q1 2026
23Bank of New York Mellon Corp
$432K
40K
−8.3%
Reduced · −4K sh
Q1 2026
24SIMPLEX TRADING, LLC
$335K
31K
New
+31K sh
Q1 2026
25JANE STREET GROUP, LLC
$305K
29K
−80%
Reduced · −116K sh
Q1 2026

Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

Is PESI being bought or sold by institutions?

Last quarter, 9 funds opened a new position in PESI and 9 added to an existing one, while 3 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).

Opened (NEW)
9
funds
Added
9
funds
Reduced
3
funds
Exited
0
funds

Funds that own PESI also own

CompanyCo-held byCombined value
MICROSOFT CORPMSFT31 funds$79.4B
AMAZON.COM INCAMZN31 funds$51.7B
CHEVRON CORPCVX31 funds$7.7B
ABBOTT LABORATORIESABT31 funds$4.5B
NVIDIA CORPNVDA30 funds$116.9B
ELI LILLY & COLLY30 funds$22.1B
VISA INC-CLASS A SHARESV30 funds$19.6B
BERKSHIRE HATHAWAY INC-CL BBRK/B30 funds$10.8B
JOHNSON & JOHNSONJNJ30 funds$10.0B
CISCO SYSTEMS INCCSCO30 funds$6.6B
ORACLE CORPORCL30 funds$5.5B
TEXAS INSTRUMENTS INCTXN30 funds$5.0B

Ranked by how many of PESI's institutional holders also hold each name, a cross-fund conviction signal.

Insider activity (Form 4)

Full insider page →
Buys · 180d
$0
0 insiders
Sells · 180d
$0
0 insiders
Net
$0
0 P/S txns
Signal
Mixed
open-market
DateInsiderRoleActionSharesValue
Sep 16, 2025Duggan Kerry CDirectorSell (S)6K$49K
Sep 11, 2025Shelton LarryDirectorBuy (P)1K$9K
Sep 11, 2025Duff MarkPresident and CEO, DirectorBuy (P)897$7K
Sep 9, 2025Shelton LarryDirectorBuy (P)1K$10K
May 30, 2025Duggan Kerry CDirectorSell (S)17K
Mar 21, 2025Duff MarkPresident and CEO, DirectorBuy (P)650$5K
Mar 21, 2025Duff MarkPresident and CEO, DirectorBuy (P)650$5K
Mar 21, 2025Duff MarkPresident and CEO, DirectorBuy (P)750$5K
Mar 21, 2025Naccarato BenChief Financial OfficerBuy (P)400$3K
Mar 18, 2025Duff MarkPresident and CEO, DirectorBuy (P)500$4K
Mar 18, 2025Duff MarkPresident and CEO, DirectorBuy (P)500$4K
Mar 18, 2025Eshleman TroyChief Operating OfficerBuy (P)1K$10K

Institutional ownership over time

10 funds-44 since Q3 2024
03671Q3 2024Q1 2025Q3 2025Q1 2026Q2 2026
funds holding aggregate valuelatest $1.5M

Recent filings

15 shown

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Connected entities for PESI

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Ask your agent what changed in PESI

This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.

Copy-paste
curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://arkolith.com/api/v1/stocks/PESI/capital-change-brief"
Ask your agent
Use Arkolith's capital_change_brief for PESI.
Tell me what changed, whether insider activity
corroborates it, and cite the SEC evidence.

13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for PESI. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.