JANUS HENDERSON GROUP PLC

Position in IOSP — Innospec Inc.

CIK 1274173 LONDON, X0

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Position in IOSP

as of Mar 31, 2026 · filed May 18, 2026 Compact

Position Value

$9,731,520

-$1,814,614 QoQ

Shares Held

133,272

-11.7% QoQ

Ownership

0.541%

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 0.ToString("F0")% Shared 92.21591932288852.ToString("F0")% None 7.784080677111471.ToString("F0")%

Common Shares in IOSP Over Time

Shares Held

Position Value (USD)

Position in Specialty Chemicals

Basic Materials · as of Mar 31, 2026

JANUS HENDERSON GROUP PLC holds $970,379,263 across 35 Specialty Chemicals names. IOSP ranks #11 (1.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ECL	Ecolab Inc.	1,701,151	$452,540,187
2	SXT	Sensient Technologies Corp	1,905,920	$164,747,723
3	PRM	Perimeter Solutions, Inc.	4,007,536	$97,864,028
4	SOLS	Solstice Advanced Materials Inc.	517,163	$39,387,133
5	WLK	Westlake Corp	269,783	$31,516,049
6	AXTA	Axalta Coating Systems Ltd.	1,036,806	$28,719,525
7	LIN	Linde PLC	56,668	$28,093,727
8	KWR	Quaker Chemical Corp	199,349	$24,765,125

All Filings in IOSP

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25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$9,731,520	133,272	-11.7%	Shares	Defined	2026-05-18
2025-12-31	$11,546,134	150,851	-41.6%	Shares	Defined	2026-02-17
2025-09-30	$19,915,535	258,107	+1.1%	Shares	Defined	2025-11-14
2025-06-30	$21,478,183	255,419	-46.2%	Shares	Defined	2025-08-14
2025-03-31	$44,960,580	474,518	+1.4%	Shares	Defined	2025-05-15
2024-12-31	$51,501,255	467,938	+1.0%	Shares	Defined	2025-02-14
2024-09-30	$52,407,149	463,411	-16.4%	Shares	Defined	2024-11-14
2024-06-30	$68,496,172	554,221	-4.3%	Shares	Defined	2024-08-14
2024-03-31	$74,650,843	578,958	-0.4%	Shares	Defined	2024-05-15
2023-12-31	$71,608,970	581,053	+0.2%	Shares	Defined	2024-02-14
2023-09-30	$59,290,000	580,137	-9.2%	Shares	Defined	2023-11-14
2023-06-30	$64,142,288	638,613	+13.2%	Shares	Defined	2023-08-14
2023-03-31	$57,924,051	564,177	+28.7%	Shares	Defined	2023-05-15
2022-12-31	$45,093,000	438,392	-13.6%	Shares	Defined	2023-02-14
2022-09-30	$43,483,349	507,568	-17.1%	Shares	Defined	2023-01-13
2022-06-30	$58,656,526	612,345	-22.9%	Shares	Defined	2022-08-15
2022-03-31	$73,516,073	794,339	-12.6%	Shares	Defined	2022-05-16
2021-12-31	$82,124,480	909,060	+0.5%	Shares	Defined	2022-02-14
2021-09-30	$76,160,061	904,299	+9.2%	Shares	Defined	2021-11-16
2021-06-30	$75,023,267	827,980	+8.1%	Shares	Defined	2021-08-16
2021-03-31	$78,645,547	765,854	-5.0%	Shares	Defined	2021-05-17
2020-12-31	$73,132,825	806,049	+7.0%	Shares	Defined	2021-02-16
2020-09-30	$47,713,392	753,528	+26.5%	Shares	Defined	2020-11-16
2020-06-30	$46,015,662	595,672	+11.2%	Shares	Defined	2020-08-14
2020-03-31	$37,224,264	535,678	—	Shares	Defined	2020-05-14
No filing history on record for this holder in this stock.