Innospec Inc. (IOSP) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

40,000,000Shares Outstanding

137,241Shares held by institutions

$11,821,940Value of institutional holdings

59.84%Institutional ownership %

2.23%Shares Changed QoQ

266No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

The institutional landscape for Innospec Inc. (NASDAQ:IOSP) includes 243 filers as of the latest reporting cycle ending December 2025.

The percentage of Innospec owned by institutions changed from 59.8% in September 2025 to 60.2% in December 2025, marking a slight up trend.
Institutional share ownership changed by 2.49% QoQ, while the number of institutional owners saw a decrease of 5.45% YoY.
Among the 243 institutional holders of Innospec, 122 added to their stakes while 87 trimmed their positions and 34 held steady.
The total number of shares held by institutions in Innospec increased to 24.07Mn as of December 2025, a net change of up by 583.72K shares quarter on quarter, and down 20.43K shares year over year.
As of December 31, 2025, BlackRock, Inc. held Innospec's largest shareholding position with over 3.66Mn shares, representing 9.16% of total outstanding shares.
Among the most significant buyers of Innospec during December 2025 were Western Standard LLC (241.37K), GOLDMAN SACHS GROUP INC (202.32K), Medina Value Partners, LLC (142.81K), NORGES BANK (139.20K), VICTORY CAPITAL MANAGEMENT INC (114.18K).
Leading sellers of Innospec stock in December 2025 included FIRST TRUST ADVISORS LP (628.29K), ROYCE & ASSOCIATES LP (187.39K), JANUS HENDERSON GROUP PLC (107.26K), Bank of New York Mellon Corp (77.36K), BANK OF AMERICA CORP /DE/ (52.97K).
The top 10 institutional holders of Innospec for the quarter ending December 2025 included 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 (502.60K), WESTWOOD HOLDINGS GROUP INC (491.45K).

243 Institutional Holders

137,241 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	3,662,323	29,338	0.81%	$280,314,199.00
VANGUARD GROUP INC	31 Dec, 2025	3,121,151	-22,271	-0.71%	$238,892,898.00
Allspring Global Investments Holdings, LLC	31 Dec, 2025	2,356,503	-35,246	-1.47%	$179,754,049.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	1,175,122	8,147	0.70%	$89,946,408.00
VICTORY CAPITAL MANAGEMENT INC	31 Dec, 2025	950,074	114,179	13.66%	$72,718,664.00
STATE STREET CORP	31 Dec, 2025	949,038	19,915	2.14%	$72,639,369.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	609,220	-4,992	-0.81%	$46,637,981.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	533,312	51,824	10.76%	$40,819,700.00
Nuveen, LLC	31 Dec, 2025	502,603	91,326	22.21%	$38,469,234.00
WESTWOOD HOLDINGS GROUP INC	31 Dec, 2025	491,451	43,489	9.71%	$37,615,660.00
GOLDMAN SACHS GROUP INC	31 Dec, 2025	484,968	202,325	71.58%	$37,119,453.00
Medina Value Partners, LLC	31 Dec, 2025	378,769	142,813	60.53%	$28,990,979.00
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	31 Dec, 2025	373,540	12,950	3.59%	$28,590,752.00
BANK OF AMERICA CORP /DE/	31 Dec, 2025	322,358	-52,973	-14.11%	$24,673,283.00
Qube Research & Technologies Ltd	31 Dec, 2025	320,504	-33,508	-9.47%	$24,531,376.00
D. E. Shaw & Co., Inc.	31 Dec, 2025	309,927	36,022	13.15%	$23,721,812.00
BROWN ADVISORY INC	31 Dec, 2025	305,977	-43,995	-12.57%	$23,419,533.00
JPMORGAN CHASE & CO	31 Dec, 2025	305,875	-15,107	-4.71%	$23,411,673.00
ROYCE & ASSOCIATES LP	31 Dec, 2025	305,226	-187,388	-38.04%	$23,361,998.00
GENDELL JEFFREY L	31 Dec, 2025	285,351	110,402	63.11%	$21,840,766.00

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