Innospec Inc. (IOSP) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

0Shares Outstanding

140,786Shares held by institutions

$10,299,904Value of institutional holdings

98.42%Institutional ownership %

1.26%Shares Changed QoQ

260No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Innospec Inc. (NASDAQ:IOSP) showed up in the 13F filings of 252 institutional investors as of December 2025.

They owned 97.3% of outstanding stock in December 2025, down from 99.0% the prior quarter.
They decreased total shares held in IOSP by -0.46% quarter over quarter, and investors in Innospec decreased 1.95% from a year ago.
Of these 252 funds, 127 grew their exposure to Innospec, 91 cut back, and 34 maintained positions.
Institutional investors collectively held 24.23Mn shares in Innospec as of December 2025, down by 110.78K shares quarter on quarter, and down 844.19K shares year over year.
BlackRock, Inc. leads ownership in IOSP with 3.66Mn shares as of December 31, 2025, equal to 14.7% of outstanding shares.
The most significant purchases of IOSP for the quarter ending December 2025 came from Western Standard LLC (241.37K), Goldman Sachs Group Inc (202.32K), Medina Value Partners, LLC (142.81K), NORGES BANK (139.2K), VICTORY CAPITAL MANAGEMENT INC (114.18K).
Leading sellers of Innospec shares for the quarter ending December 2025 were FIRST TRUST ADVISORS LP (628.29K), Bank Of America Corp /De/ (428.3K), Jpmorgan Chase & Co (336.09K), ROYCE & ASSOCIATES LP (187.39K), Janus Henderson Group Plc (107.26K).
Per Business Quant data, the top 10 holders of Innospec for the quarter ending December 2025 are BlackRock, Inc. (3.66Mn), VANGUARD GROUP INC (3.12Mn), Allspring Global Investments Holdings, LLC (2.36Mn), DIMENSIONAL FUND ADVISORS LP (1.18Mn), VICTORY CAPITAL MANAGEMENT INC (950.07K), State Street Corp (949.04K), GEODE CAPITAL MANAGEMENT, LLC (609.22K), MILLENNIUM MANAGEMENT LLC (533.31K), Nuveen, LLC (502.6K), Westwood Holdings Group Inc (491.45K).

252 Institutional Holders

140,786 Total Shares Held

Rows:

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Owner Name	Date	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	29,338	0.81%	$0.00
VANGUARD GROUP INC	31 Dec, 2025	-22,271	-0.71%	$0.00
Allspring Global Investments Holdings, LLC	31 Dec, 2025	-35,246	-1.47%	$0.00
Barclays Plc	31 Dec, 2025	-45,052	-49.56%	$0.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	8,147	0.70%	$0.00
Nuveen, LLC	31 Dec, 2025	91,326	22.21%	$0.00
HSBC HOLDINGS PLC	31 Dec, 2025	14,663	97.55%	$0.00
VICTORY CAPITAL MANAGEMENT INC	31 Dec, 2025	114,179	13.66%	$0.00
Medina Value Partners, LLC	31 Dec, 2025	142,813	60.53%	$0.00
Rockefeller Capital Management L.P.	31 Dec, 2025	1,133	350.77%	$0.00
State Street Corp	31 Dec, 2025	19,915	2.14%	$0.00
Qube Research & Technologies Ltd	31 Dec, 2025	-33,508	-9.47%	$0.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	-4,992	-0.81%	$0.00
UBS Group AG	31 Dec, 2025	-22,992	-13.93%	$0.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	51,824	10.76%	$0.00
Walleye Capital LLC	31 Dec, 2025	-46,871	-31.08%	$0.00
Westwood Holdings Group Inc	31 Dec, 2025	43,489	9.71%	$0.00
Numerai GP LLC	31 Dec, 2025	16,728	20.51%	$0.00
Goldman Sachs Group Inc	31 Dec, 2025	202,325	71.58%	$0.00
Point72 Asset Management, L.P.	31 Dec, 2025	83,982	712.13%	$0.00

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