ACADIAN ASSET MANAGEMENT LLC

Position in IOSP — Innospec Inc.

CIK 916542 Boston, MA

Position in IOSP

as of Mar 31, 2026 · filed May 13, 2026 Compact

Position Value

$8,948,747

+$7,865,018 QoQ

Shares Held

122,552

+765.5% QoQ

Ownership

0.498%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

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

Basic Materials · as of Mar 31, 2026

ACADIAN ASSET MANAGEMENT LLC holds $268,427,949 across 23 Specialty Chemicals names. IOSP ranks #5 (3.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	LIN	Linde PLC	212,818	$105,506,651
2	ECL	Ecolab Inc.	325,922	$86,701,770
3	LYB	LyondellBasell Industries N.V.	361,413	$29,115,431
4	RPM	Rpm International Inc/De/	107,085	$10,644,249
5	IOSP	Innospec Inc. This page	122,552	$8,948,747
6	ALB	Albemarle Corp	37,209	$6,680,131
7	ALTO	Alto Ingredients, Inc.	590,564	$2,858,329
8	SHW	Sherwin Williams Co	8,880	$2,846,484

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$8,948,747	122,552	+765.5%	Shares	Defined	2026-05-13
2025-12-31	$1,083,729	14,159	-48.2%	Shares	Defined	2026-02-10
2025-09-30	$2,107,548	27,314	+483.0%	Shares	Defined	2025-11-13
2025-06-30	$393,961	4,685	+63.6%	Shares	Defined	2025-08-07
2025-03-31	$271,364	2,864	-56.3%	Shares	Defined	2025-05-21
2024-12-31	$721,113	6,552	-87.7%	Shares	Defined	2025-02-11
2024-09-30	$6,014,691	53,185	-10.6%	Shares	Defined	2024-11-12
2024-06-30	$7,349,279	59,465	-5.7%	Shares	Defined	2024-08-06
2024-03-31	$8,131,472	63,064	-36.6%	Shares	Defined	2024-05-10
2023-12-31	$12,253,137	99,425	-11.0%	Shares	Defined	2024-02-13
2023-09-30	$11,410,834	111,652	+19.7%	Shares	Defined	2023-11-13
2023-06-30	$9,369,143	93,281	+25.3%	Shares	Defined	2023-08-07
2023-03-31	$7,641,830	74,431	+3.6%	Shares	Defined	2023-05-11
2022-12-31	$7,393,371	71,878	+166.2%	Shares	Defined	2023-02-14
2022-09-30	$2,313,175	27,001	-61.7%	Shares	Defined	2022-11-14
2022-06-30	$6,754,344	70,512	+23.7%	Shares	Defined	2022-08-09
2022-03-31	$5,275,072	56,997	+8.6%	Shares	Defined	2022-05-12
2021-12-31	$4,740,410	52,473	+69.5%	Shares	Defined	2022-02-10
2021-09-30	$2,607,619	30,962	+274.6%	Shares	Defined	2021-11-12
2021-06-30	$748,982	8,266	-1.3%	Shares	Defined	2021-08-11
2021-03-31	$860,131	8,376	-37.0%	Shares	Defined	2021-05-11
2020-12-31	$1,205,710	13,289	-3.8%	Shares	Defined	2021-02-11
2020-09-30	$875,082	13,820	0.0%	Shares	Defined	2020-11-09
2020-06-30	$1,067,595	13,820	+11.2%	Shares	Defined	2020-08-12
2020-03-31	$863,969	12,433	—	Shares	Defined	2020-05-11
No filing history on record for this holder in this stock.