RHUMBLINE ADVISERS

Position in GEOS — Geospace Technologies Corp

CIK 1115418 BOSTON, MA

Position in GEOS

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

Position Value

$5,355

-$2,068 QoQ

Shares Held

439

0.0% QoQ

Ownership

0.003%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

15 quarters on record

Voting authority Sole 0.ToString("F0")% Shared 0.ToString("F0")% None 100.ToString("F0")%

Energy · as of Mar 31, 2026

RHUMBLINE ADVISERS holds $504,442,954 across 32 Oil & Gas Equipment & Services names. GEOS ranks #32 (0.0% 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

15 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$5,355	439	0.0%	Shares	Sole	2026-05-12
2025-12-31	$7,423	439	0.0%	Shares	Sole	2026-02-13
2025-09-30	$8,323	439	-26.8%	Shares	Sole	2025-11-06
2025-06-30	$8,556	600	-94.8%	Shares	Sole	2025-08-12
2025-03-31	$83,340	11,559	-12.0%	Shares	Sole	2025-05-29
2024-12-31	$131,632	13,137	+2.5%	Shares	Sole	2025-05-29
2024-09-30	$132,527	12,817	-13.5%	Shares	Sole	2024-11-12
2024-06-30	$133,119	14,824	+2370.7%	Shares	Sole	2024-08-01
2024-03-31	$7,914	600	0.0%	Shares	Sole	2024-05-09
2023-12-31	$7,776	600	0.0%	Shares	Sole	2024-02-08
2023-09-30	$7,770	600	0.0%	Shares	Sole	2023-11-09
2023-06-30	$4,662	600	-97.5%	Shares	Sole	2023-08-08
2020-09-30	$148,876	24,090	0.0%	Shares	Sole	2020-11-12
2020-06-30	$181,156	24,090	-43.1%	Shares	Sole	2020-08-13
2020-03-31	$270,841	42,319	—	Shares	Sole	2020-05-06
No filing history on record for this holder in this stock.