RHUMBLINE ADVISERS

Position in IOSP — Innospec Inc.

CIK 1115418 BOSTON, MA

Position in IOSP

as of Jun 30, 2026 · filed Aug 12, 2026 Compact

Position Value

$5,294,826

+$98,942 QoQ

Shares Held

65,055

-8.6% QoQ

Ownership

0.264%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#54

of 282 holders

Holding Since

Mar 2020

26 quarters on record

Voting authority Sole 51% Shared 0% None 49%

Basic Materials · as of Jun 30, 2026

RHUMBLINE ADVISERS holds $1,282,066,450 across 52 Specialty Chemicals names. IOSP ranks #30 (0.4% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	LIN	Linde PLC	780,916	$405,248,549
2	SHW	Sherwin Williams Co	409,153	$140,879,560
3	ECL	Ecolab Inc.	445,795	$124,202,944
4	APD	Air Products & Chemicals, Inc.	381,830	$111,944,919
5	PPG	Ppg Industries Inc	403,341	$48,921,229
6	DD	DuPont de Nemours, Inc.	357,575	$48,501,473
7	RPM	Rpm International Inc/De/	363,093	$40,357,786
8	SOLS	Solstice Advanced Materials Inc.	448,781	$39,761,996

26 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$5,294,826	65,055	-8.6%	Shares	Sole	2026-08-12
2026-03-31	$5,195,884	71,157	+1.4%	Shares	Sole	2026-05-12
2025-12-31	$5,372,878	70,197	-3.2%	Shares	Sole	2026-02-13
2025-09-30	$5,593,174	72,488	-11.0%	Shares	Sole	2025-11-06
2025-06-30	$6,851,737	81,481	+4.8%	Shares	Sole	2025-08-12
2025-03-31	$7,367,760	77,760	+9.3%	Shares	Sole	2025-05-29
2024-12-31	$7,831,649	71,158	-0.0%	Shares	Sole	2025-05-29
2024-09-30	$8,050,764	71,189	-3.6%	Shares	Sole	2024-11-12
2024-06-30	$9,129,964	73,873	-0.3%	Shares	Sole	2024-08-01
2024-03-31	$9,557,806	74,126	-1.7%	Shares	Sole	2024-05-09
2023-12-31	$9,290,570	75,386	+0.8%	Shares	Sole	2024-02-08
2023-09-30	$7,645,786	74,812	-1.6%	Shares	Sole	2023-11-09
2023-06-30	$7,638,863	76,054	-0.6%	Shares	Sole	2023-08-08
2023-03-31	$7,857,951	76,536	+7.1%	Shares	Sole	2023-05-11
2022-12-31	$7,352,432	71,480	-4.0%	Shares	Sole	2023-02-14
2022-09-30	$6,378,816	74,458	+5.1%	Shares	Sole	2022-11-10
2022-06-30	$6,785,476	70,837	+0.4%	Shares	Sole	2022-08-11
2022-03-31	$6,529,124	70,547	+1.8%	Shares	Sole	2022-05-12
2021-12-31	$6,260,200	69,296	+2.0%	Shares	Sole	2022-02-10
2021-09-30	$5,722,580	67,948	-12.3%	Shares	Sole	2021-11-12
2021-06-30	$7,020,190	77,477	+2.9%	Shares	Sole	2021-08-05
2021-03-31	$7,731,119	75,286	+1.5%	Shares	Sole	2021-05-06
2020-12-31	$6,729,171	74,167	+3.1%	Shares	Sole	2021-02-10
2020-09-30	$4,554,544	71,929	-5.4%	Shares	Sole	2020-11-12
2020-06-30	$5,871,849	76,011	-7.4%	Shares	Sole	2020-08-13
2020-03-31	$5,701,932	82,054	—	Shares	Sole	2020-05-06
No filing history on record for this holder in this stock.