Core Laboratories

CLB • NYSE

Core Laboratories is a oil & gas equipment & services company in the energy sector on NYSE, led by Lawrence V. Bruno, with a market cap of $767.4M. As of Q3 2025, 109% of shares are held by 187 institutional investors, with ARIEL INVESTMENTS, LLC as the largest holder at 29.37%.

Chief Executive OfficerLawrence V. Bruno

Market Cap$767.4M

Oil & Gas Equipment & Services

Energy

Employees3.6K

Websitecorelab.com

Country

United States of America

Overview

Overview of institutional ownership in CLB as of Q3 2025 with a market cap of $579.6M

All Institutions

Institutions: 187
Value Held: $633.3M
Shares Held: 51.2M
Avg Position: $3.4M
Median Position: $229.0K

Hedge Funds

Hedge Funds: 23
Value Held: $14.0M
Shares Held: 1.1M
Avg Position: $610.7K
Median Position: $345.7K

Ownership Breakdown

Institutional (non-HF)

106.84%

$619.3M

Hedge Funds

2.42%

$14.0M

Retail & Other

Based on market cap of $579.6M as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in CLB as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
ARIEL INVESTMENTS, LLC Long Only Manager	John Washington Rogers CEO	$170.2M 1.82% of portfolio	29.37% 13.8M shares	Q2 2020 Held for 5y 5m	$9.4B
B BlackRock, Inc. Institution	-	$89.7M 0.00% of portfolio	15.48% 7.3M shares	≤ Q2 2013 Held for 12y 5m+	$5.67T
D DISCIPLINED GROWTH INVESTORS INC /MN Long Only Manager	Ricki Lee Martin CEO	$73.8M 1.34% of portfolio	12.73% 6.0M shares	Q1 2015 Held for 10y 8m	$5.5B
EARNEST PARTNERS LLC Long Only Manager	Paul Ernest Viera CEO	$42.4M 0.18% of portfolio	7.31% 3.4M shares	Q4 2013 Held for 11y 11m	$23.1B
VANGUARD GROUP INC Institution	Salim Ramji CEO	$37.7M 0.00% of portfolio	6.50% 3.0M shares	≤ Q2 2013 Held for 12y 5m+	$6.69T
STATE STREET CORP Institution	Ronald P. O'Hanley CEO	$24.4M 0.00% of portfolio	4.22% 2.0M shares	≤ Q2 2013 Held for 12y 5m+	$2.88T
DIMENSIONAL FUND ADVISORS LP Long Only Manager	David Paul Butler CEO	$13.7M 0.00% of portfolio	2.37% 1.1M shares	≤ Q2 2013 Held for 12y 5m+	$466.32B
GEODE CAPITAL MANAGEMENT LLC ETF Provider	David Kenneth Lane CEO	$13.7M 0.00% of portfolio	2.36% 1.1M shares	≤ Q2 2013 Held for 12y 5m+	$1.57T
T T. Rowe Price Investment Management, Inc. Insurance Manager	John Edward Robison President	$11.2M 0.01% of portfolio	1.94% 908.2K shares	Q2 2024 Held for 1y 5m	$161.58B
F Fisher Asset Management, LLC Institution	-	$10.2M 0.00% of portfolio	1.76% 824.6K shares	Q1 2018 Held for 7y 8m	$276.29B

Net Capital Flow

Institutional buying and selling activity for CLB in Q3 2025

Traded: −$10.9M
Buyers: 91
Sellers: 96
Total Bought: +$39.0M
Total Sold: −$49.9M
Avg Position: $3.0M

Biggest Buyers

Institution	Net Bought	Current Position
ARIEL INVESTMENTS, LLC Long Only Manager	+$9.9M +797.1K shares	$170.2M 13.8M shares
D DISCIPLINED GROWTH INVESTORS INC /MN Long Only Manager	+$6.5M +529.0K shares	$73.8M 6.0M shares
H HRT FINANCIAL LLC Institution	+$3.2M +259.1K shares	$4.3M 349.5K shares
GOLDMAN SACHS GROUP INC Institution	+$2.2M +174.7K shares	$3.7M 296.6K shares
D D. E. Shaw & Co., Inc. Institution	+$1.8M +148.6K shares	$2.2M 179.4K shares
SCHWAB CHARLES INVESTMENT MANAGEMENT INC Long Only Manager	+$1.4M +116.3K shares	$8.1M 657.2K shares
BANK OF AMERICA CORP /DE/ Institution	+$1.4M +111.5K shares	$4.2M 343.3K shares
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC Long Only Manager	+$1.3M +101.8K shares	$6.9M 559.6K shares
A AMERICAN CENTURY COMPANIES INC Institution	+$999.6K +80.9K shares	$2.6M 213.9K shares
B BNP PARIBAS ARBITRAGE, SA Institution	+$928.5K +75.1K shares	$984.2K 79.6K shares

Biggest Sellers

Institution	Net Sold	Current Position
VANGUARD GROUP INC Institution	−$17.7M −1.4M shares	$37.7M 3.0M shares
F FRED ALGER MANAGEMENT INC Long Only Manager	−$6.3M −544.4K shares	Sold Off 0 shares
R ROYCE & ASSOCIATES LLC Institution	−$4.1M −331.9K shares	$5.4M 440.4K shares
STATE STREET CORP Institution	−$2.3M −185.9K shares	$24.4M 2.0M shares
EARNEST PARTNERS LLC Long Only Manager	−$2.2M −175.4K shares	$42.4M 3.4M shares
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	−$1.6M −128.7K shares	$2.4M 193.4K shares
ExodusPoint Capital Management, LP Hedge Fund•Multi-Strategy	−$1.1M −98.0K shares	Sold Off 0 shares
S Squarepoint Ops LLC Hedge Fund•Quant	−$969.0K −78.4K shares	$194.8K 15.8K shares
B BlackRock, Inc. Institution	−$915.4K −74.1K shares	$89.7M 7.3M shares
UBS GLOBAL ASSET MANAGEMENT AMERICAS INC Long Only Manager	−$773.1K −62.5K shares	$1.3M 103.1K shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited CLB in Q3 2025

New Positions: 15
New Value: $2.8M
Exited Positions: 24
Exited Value: $9.8M

New Positions

Institution	Position Value
Lido Advisors, LLC RIA/Wealth	$553.4K 44.8K shares
Pacific Ridge Capital Partners, LLC Long Only Manager	$524.6K 42.4K shares
Weiss Asset Management LP Hedge Fund•Multi-Strategy	$391.2K 31.6K shares
FourThought Financial Partners, LLC RIA/Wealth	$309.9K 25.1K shares
P PharVision Advisers, LLC Hedge Fund•Long/Short	$218.5K 17.7K shares
ISAM Funds Ltd Hedge Fund•Quant	$201.8K 16.3K shares
Q Quantessence Capital LLC Hedge Fund•Quant	$192.3K 15.6K shares
M MQS Management LLC Hedge Fund•Global Macro	$159.9K 12.9K shares
MERCER GLOBAL ADVISORS INC /ADV RIA/Wealth	$132.2K 10.7K shares
V Vestcor Investment Management Corp Institution	$100.6K 8.1K shares

Exited Positions

Institution	Previous Position
F FRED ALGER MANAGEMENT INC Long Only Manager	$6.3M 544.4K shares
ExodusPoint Capital Management, LP Hedge Fund•Multi-Strategy	$1.1M 98.0K shares
T TEXAS PERMANENT SCHOOL FUND Institution	$525.9K 45.7K shares
Verition Fund Management LLC Hedge Fund•Multi-Strategy	$365.4K 31.7K shares
C Cubist Systematic Strategies, LLC Institution	$250.3K 21.7K shares
C CONNABLE OFFICE INC Institution	$189.4K 16.4K shares
ING INVESTMENT MANAGEMENT LLC Insurance Manager	$161.1K 14.0K shares
M Maryland State Retirement & Pension System Institution	$157.4K 13.7K shares
EVERENCE CAPITAL MANAGEMENT INC Long Only Manager	$154.6K 13.4K shares
P ProShare Advisors LLC Institution	$120.8K 10.5K shares

Options Activity

Institutions with the largest Call and Put options positions in CLB as of Q3 2025

Call Positions: 3
Call Value: $464.7K
Put Positions: 3
Put Value: $312.7K

Call Positions

Institution	Position Value
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$187.9K 152.0 contracts
Walleye Trading Advisors, LLC Hedge Fund•Multi-Strategy	$153.3K 124.0 contracts
Walleye Trading LLC RIA/Wealth	$123.6K 100.0 contracts

Put Positions

Institution	Position Value
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$284.3K 230.0 contracts
Walleye Trading LLC RIA/Wealth	$27.2K 22.0 contracts
Walleye Trading Advisors, LLC Hedge Fund•Multi-Strategy	$1.2K 1.0 contracts

Most Committed Institutions

Institutions with CLB as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
ARIEL INVESTMENTS, LLC Long Only Manager	John Washington Rogers CEO	1.82% $170.2M	29.37% 13.8M shares	Q2 2020 Held for 5y 5m	$9.4B
D DISCIPLINED GROWTH INVESTORS INC /MN Long Only Manager	Ricki Lee Martin CEO	1.34% $73.8M	12.73% 6.0M shares	Q1 2015 Held for 10y 8m	$5.5B
B BWM Planning, LLC Institution	-	0.24% $803.8K	0.14% 65.0K shares	Q3 2024 Held for 1y 2m	$336.1M
EARNEST PARTNERS LLC Long Only Manager	Paul Ernest Viera CEO	0.18% $42.4M	7.31% 3.4M shares	Q4 2013 Held for 11y 11m	$23.1B
Ridgewood Investments LLC RIA/Wealth	Kaushal Bhupendra Majmudar President	0.16% $388.5K	0.07% 31.4K shares	Q2 2022 Held for 3y 5m	$237.0M
G GENDELL JEFFREY L Institution	-	0.13% $7.0M	1.21% 569.5K shares	Q4 2022 Held for 2y 11m	$5.5B
P PharVision Advisers, LLC Hedge Fund•Long/Short	Blagovest Dimitrov Baychev CEO	0.12% $218.5K	0.04% 17.7K shares	Q3 2025 Held for 2 months	$176.9M
Pacific Ridge Capital Partners, LLC Long Only Manager	Mark Daniel Cooper President	0.11% $524.6K	0.09% 42.4K shares	Q3 2025 Held for 2 months	$460.6M
C CoreCommodity Management, LLC Hedge Fund•Global Macro	Bradford L Klein President	0.10% $545.1K	0.09% 44.1K shares	Q4 2024 Held for 11 months	$551.0M
M MQS Management LLC Hedge Fund•Global Macro	Robert Yale Gelfond CEO	0.09% $159.9K	0.03% 12.9K shares	Q3 2025 Held for 2 months	$171.4M

Hedge Fund Spotlight

Discover hedge funds investing in CLB

MQS Management LLC

Hedge Fund • Global Macro

Portfolio ManagerRobert Yale Gelfond

Portfolio Value: $171.4M
Positions: 404
Last Reported: Q3 2025

Sector Allocation

Position in Core Laboratories

Market Value: $159.9K
Shares Held: 12.9K
Portfolio Weight: 0.09%
Owned Since: 2025-Q3

Top Holding	Sector	Market Value	Weight
1 Kimco Realty KIM	REIT - Retail Real Estate	$1.3M	0.77%
2 Hilton Worldwide HLT	Travel Lodging Consumer Cyclical	$1.2M	0.71%
3 Schlumberger SLB	Oil & Gas Equipment & Services Energy	$1.2M	0.70%