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Institutional Cluster ·Filed Oct 23, 2026

CLH

CLEAN HARBORS INC
NEUTRAL
Impact 3/10
Horizonweeks Processed3d 10h ago
Institutional cluster: 5 buyers, 0 sellers (bullish)
Actionable Insight • Neutral

The cluster is directionally bullish but small in absolute dollar terms relative to CLH's market cap. Monitor next 13F filing for confirmation — if these positions were maintained or increased, the signal strengthens; if reversed, the thesis was stale.

DirectionNeutral
Confidencemedium
Horizonweeks
Latest settled — T+1d
CLH ▼ -0.52% at T+1d
NEUTRAL call -0.52% · α vs SPY -1.23% · entry $318.76 → $317.09
Next anchor: T+5d in 3d
Entry = T+0 close
Oct 23, 2026
via day close
T+1d
-0.52%
call -0.52% · α -1.23%
$317.09
settled 17h ago
T+5d
Pending
in 3d
T+20d
Pending
in 24d
T+60d
Pending
in 3mo

Executive Summary

Five asset managers increased their CLH positions in Q3 2026, with Assenagon Asset Management doubling its stake to $52.2M.

Key Financial Metrics

Direction
accumulating
Buy Value
$58.2M
Net Flow
$32.9M

Institutional Positions

Net institutional flow: $32.9M

▲ Buyers (5)

InstitutionActionChangePosition ValueValue Δ
Assenagon Asset ManagementDOUBLED+131.9%$52.2M$30.5M
Wealth Enhancement Advisory ServicesADD+71.1%$5.0M$2.0M
Hb Wealth ManagementADD+61.4%$754.0K$304.0K
Farther Finance AdvisorsADD+47.5%$223.0K$78.0K
Mather GroupDOUBLED+165.5%$24.0K$15.0K

Key Facts

  • 5 institutional buyers, 0 sellers in Q3 2026
  • Aggregate net buying of $32.9M across tracked funds
  • Assenagon Asset Management doubled its stake to $52.2M (largest buyer)
  • All buyers are active asset managers — no passive/index fund participation

Financial Impact

5 institutions accumulated $32.9M in net new CLH positions during Q3 2026, bringing total tracked holdings to $58.2M

institutional ownershipfloat

Risk Factors

  • 13F data is 45+ days stale — positions may have already been unwound
  • No insider buying corroboration provided — institutions-only signal is weaker
  • Small aggregate dollar amount ($32.9M) relative to CLH's market cap limits market impact

Investment Themes

Industrials & Manufacturing

Documents Analyzed

This report is based on 1 institutional 13F filing from SEC EDGAR.

DocumentAccession Number
INST-CLUSTER Data (Synthetic)inst-cluster-CLH-2026-Q3
10 reports for CLH
Performance horizon
67% Hit rate @ T+60 2 of 3 directional calls Went positive at some point 3 of 5 best @ T+60▲ +8.65%May 6, 2026
Filters
Rows
Reports for CLH — sortable, filterable
TypeNow
Oct 23, 2026
3d ago
Institutional Cluster
NEUTRAL ★ 3/10
$318.76awaiting T+60——
Oct 5, 2026
21d ago
8-K
BULLISH ★ 6/10
$318.06awaiting T+60——
Sep 18, 2026
5w ago
8-K
NEUTRAL ★ 4/10
$315.80awaiting T+60——
Aug 14, 2026
10w ago
Insider Cluster
NEUTRAL ★ 4/10
$321.98awaiting T+60——
Aug 12, 2026
10w ago
8-K
BULLISH ★ 6/10
$316.65awaiting T+60——
Jul 29, 2026
12w ago
8-K
BULLISH ★ 8/10
$326.34 $320.96▼ −1.65%▼ −6.38%—
May 14, 2026
23w ago
8-K
BULLISH ★ 6/10
$308.40 $310.00▲ +0.52%▼ −3.07%—
May 6, 2026
24w ago
8-K
BULLISH ★ 7/10
$287.98 $312.88▲ +8.65%▲ +6.59%—
Apr 10, 2026
28w ago
DEFA14A
NEUTRAL ★ 3/10
$302.23 $297.93▼ −1.42%▼ −11.75%—
Mar 17, 2026
31w ago
Insider Cluster
NEUTRAL ★ 4/10
$290.55 $287.99▼ −0.88%▼ −11.06%—
Showing 10 of 10

US Market Status

Market Closed — Opens in 8h 14m

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Report published Oct 23, 2026