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ESSEX INVESTMENT MANAGEMENT CO LLC

Position in CLH — Clean Harbors Inc

CIK 201772 BOSTON, MA

Position in CLH

as of Jun 30, 2026 · filed Aug 6, 2026
Position Value
$57,658
+$2,320 QoQ
Shares Held
193
0.0% QoQ
Ownership
0.000%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#216
of 290 holders
Holding Since
Jun 2020
25 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

ESSEX INVESTMENT MANAGEMENT CO LLC holds $167,760 across 2 Waste Management names. CLH ranks #2 (34.4% of the industry book) .

# Ticker Company Shares Value (USD) Open
2 CLH
Clean Harbors Inc
This page
193 $57,658

All Filings in CLH

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25 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $57,658 193
2026-03-31 $55,338 193
2025-12-31 $45,254 193
2025-09-30 $44,818 193
2025-06-30 $44,617 193
2025-03-31 $38,040 193
2024-12-31 $44,417 193
2024-09-30 $112,878 467
2024-06-30 $105,612 467
2024-03-31 $107,096 532
2023-12-31 $130,184 746
2023-09-30 $1,024,745 6,123
2023-06-30 $1,446,984 8,800
2023-03-31 $1,423,176 9,983
2022-12-31 $1,683 14,748
2022-09-30 $1,269,169 11,540
2022-06-30 $1,011,711 11,540
2022-03-31 $1,481,462 13,270
2021-12-31 $1,381,614 13,848
2021-09-30 $1,440,261 13,866
2021-06-30 $1,291,479 13,866
2021-03-31 $1,172,300 13,946
2020-12-31 $234,083 3,076
2020-09-30 $172,348 3,076
2020-06-30 $184,498 3,076