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PKO Investment Management Joint-Stock Co

Position in CLH — Clean Harbors Inc

CIK 2059321 WARSAW, R9

Position in CLH

as of Jun 30, 2026 · filed Jul 20, 2026
Position Value
$4,481,250
+$180,300 QoQ
Shares Held
15,000
0.0% QoQ
Ownership
0.028%
of shares outstanding
% of Portfolio
0.40%
of 13F equity value
Holder Rank
#197
of 655 holders
Holding Since
Dec 2020
23 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in CLH Over Time

Shares Held

Position Value (USD)

Position in Waste Management

Industrials · as of Jun 30, 2026

PKO Investment Management Joint-Stock Co holds $10,055,963 across 4 Waste Management names. CLH ranks #1 (44.6% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 CLH
Clean Harbors Inc
This page
15,000 $4,481,250

All Filings in CLH

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23 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $4,481,250 15,000
2026-03-31 $4,300,950 15,000
2025-12-31 $3,517,200 15,000
2025-09-30 $3,483,300 15,000
2025-06-30 $3,467,700 15,000
2025-03-31 $2,956,500 15,000
2024-12-31 $3,452,100 15,000
2024-09-30 $3,625,650 15,000
2024-06-30 $3,392,250 15,000
2024-03-31 $3,019,650 15,000
2023-12-31 $3,215,172 18,424
2023-09-30 $3,083,440 18,424
2023-06-30 $3,029,458 18,424
2023-03-31 $2,626,525 18,424
2022-12-31 $2,102,546 18,424
2022-09-30 $2,026,271 18,424
2022-06-30 $1,931,107 22,027
2022-03-31 $2,459,094 22,027
2021-12-31 $3,363,645 33,714
2021-09-30 $3,241,990 31,212
2021-06-30 $1,587,385 17,043
2021-03-31 $202,332 2,407
2020-12-31 $69,098 908