How many institutions held CLH - CLEAN HARBORS INC - Common Stock, par value $0.01 per share in Q4 2017?

244 institutional investors reported CLH - CLEAN HARBORS INC - Common Stock, par value $0.01 per share for Q4 2017. Use the holders table for investor-level position and value details.

CLEAN HARBORS INC - Common Stock, par value $0.01 per share (CLH)

Q: What does CUSIP 184496107 represent in this 13F holders report?

CUSIP 184496107 is the security identifier for CLH - CLEAN HARBORS INC - Common Stock, par value $0.01 per share used to aggregate holder disclosures.

CUSIP: 184496107

Q4 2017 13F Holders as of 31 Dec 2017

Security type / class: Equity / Common Stock, par value $0.01 per share
Total 13F shares: 52,891,164
Total 13F value: $2,867,280,141
Share change: -240,559
Put/Call ratio: 51%
SEC-reported price per share: $54.20
Number of holders: 244
Value change: -$15,861,691
Number of buys: 127
Number of sells: 92
Shares outstanding: 53,531,240

Security key

184496107

Report period

Q4 2017

Institutions

244

Top holders

CLH full security history Ownership snapshot Full 13F holder table Newer quarter: Q1 2018 Previous quarter: Q3 2017 CLEAN HARBORS INC SEC filings CLEAN HARBORS INC company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 184496107

Newer quarter: Q1 2018 Previous quarter: Q3 2017

Recent filing periods:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Ownership snapshot

Top reported holders of CLH - CLEAN HARBORS INC - Common Stock, par value $0.01 per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

WELLINGTON MANAGEMENT GRO...

Disclosed value leader

WELLINGTON MANAGEMENT GRO...

Comparable rows

15/15

Latest evidence

30 Sep 2017

13F Lead comparable stake: 14% Showing 1-6 of 15 holder rows.

Quick read

WELLINGTON MANAGEMENT GROUP LLP leads the comparable SEC ownership view at 14%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens WELLINGTON MANAGEMENT GROUP LLP's linked filing trail.

Comparable ownership Top 5

WELLINGTON MANAGEMENT GROUP LLP 14%

VANGUARD GROUP INC 7.8%

BlackRock Finance, Inc. 7.7%

SOUTHERNSUN ASSET MANAGEMENT, LLC 7%

ArrowMark Colorado Holdings LLC 4.9%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
WELLINGTON MANAGEMENT GROUP LLP	13F Company 13F	14%	$418,336,000 7,378,060 shares	—	30 Sep 2017
VANGUARD GROUP INC	13F Company 13F	7.8%	$236,959,000 4,179,173 shares	—	30 Sep 2017
BlackRock Finance, Inc.	13F Company 13F	7.7%	$234,855,000 4,142,064 shares	—	30 Sep 2017
SOUTHERNSUN ASSET MANAGEMENT, LLC	13F Company 13F	7%	$213,056,000 3,757,594 shares	—	30 Sep 2017
ArrowMark Colorado Holdings LLC	13F Company 13F	4.9%	$148,187,000 2,613,535 shares	—	30 Sep 2017
FULLER & THALER ASSET MANAGEMENT, INC.	13F Company 13F	4.2%	$128,163,000 2,260,372 shares	—	30 Sep 2017

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q4 2017

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

244

52,891,164

Rows available

244

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q4 2017 vs Q3 2017 Across Filers

Q3 2017 holders

230

Q4 2017 holders

244

Holder diff

Investor	Q3 2017 Shares	Q4 2017 Shares	Share Diff	Share Chg %	Q3 2017 value	Q4 2017 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend