RHUMBLINE ADVISERS

Position in CLB — Core Laboratories Inc. /DE/

CIK 1115418 BOSTON, MA

Position in CLB

as of Mar 31, 2026 · filed May 12, 2026 Compact

Position Value

$2,336,059

+$172,955 QoQ

Shares Held

139,134

+3.1% QoQ

Ownership

0.302%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Jun 2023

12 quarters on record

Voting authority Sole 42.61647045294465.ToString("F0")% Shared 0.ToString("F0")% None 57.38352954705535.ToString("F0")%

Energy · as of Mar 31, 2026

RHUMBLINE ADVISERS holds $504,442,954 across 32 Oil & Gas Equipment & Services names. CLB ranks #18 (0.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	SLB	Slb Limited/Nv	2,550,837	$131,087,513
2	BKR	Baker Hughes Co	1,678,694	$102,484,268
3	FTI	TechnipFMC plc	1,028,750	$71,117,487
4	HAL	Halliburton Co	1,540,521	$60,064,913
5	NOV	NOV Inc.	964,995	$18,151,555
6	WFRD	Weatherford International plc	189,393	$17,912,789
7	AROC	Archrock, Inc.	485,773	$16,904,900
8	LBRT	Liberty Energy Inc.	466,859	$13,445,539

12 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$2,336,059	139,134	+3.1%	Shares	Sole	2026-05-12
2025-12-31	$2,163,104	134,941	-4.7%	Shares	Sole	2026-02-13
2025-09-30	$1,750,942	141,662	+1.0%	Shares	Sole	2025-11-06
2025-06-30	$1,615,345	140,221	+1.2%	Shares	Sole	2025-08-12
2025-03-31	$2,077,763	138,610	+1.7%	Shares	Sole	2025-05-29
2024-12-31	$2,358,210	136,234	-1.0%	Shares	Sole	2025-05-29
2024-09-30	$2,549,264	137,575	+0.2%	Shares	Sole	2024-11-12
2024-06-30	$2,785,045	137,262	-5.1%	Shares	Sole	2024-08-01
2024-03-31	$2,469,409	144,579	+1.5%	Shares	Sole	2024-05-09
2023-12-31	$2,515,031	142,414	-0.5%	Shares	Sole	2024-02-08
2023-09-30	$3,436,815	143,141	+2.7%	Shares	Sole	2023-11-09
2023-06-30	$3,241,933	139,438	—	Shares	Sole	2023-08-08
No filing history on record for this holder in this stock.