Innospec IOSP Institutional Ownership

NASDAQ IOSP

$93.60 +0.23 (+0.25%)

As of: Sep 9, 2026 · 3:59 PM EDT

Institutions by Trading Activity

279 Institutions

Increased 145 52.0%

Unchanged 37 13.3%

Reduced 97 34.8%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

101.21%

▲+0.03 pp QoQ

Shares Held by Institutions

24.94Mn

of 24.64Mn outstanding

▲+2.13% QoQ

Shares Outstanding

24.64Mn

-299.31K held outside 13F filers

Institutional Investors

279

filed 13F for Jun 2026

▲+14 vs prior quarter

Net Shares Added (QoQ)

+519.05K

accumulated since last quarter

Value of Holdings

$2.34Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Innospec Inc. (NASDAQ:IOSP) appears in 279 institutional 13F filings for the quarter ending June 2026.

These investors held 101.2% of outstanding shares in June 2026, up from 101.2% in March 2026.
Their total shares held in IOSP increased 2.13% from the prior quarter, while the number of investors in Innospec increased 6.9% year over year.
During the quarter, 145 of these 279 funds increased positions in IOSP, 97 reduced exposure, and 37 held steady.
The aggregate institutional position in Innospec amounted to 24.94Mn shares as of June 2026, up by 519.05K shares quarter on quarter, and up 297.57K shares year over year.
BlackRock, Inc. is the top holder of Innospec as of June 30, 2026, with 4.38Mn shares representing 17.78% of outstanding stock.
The largest buyers of Innospec for the quarter ending June 2026 were BlackRock, Inc. (502.35K), Sixth Street Partners Management Company, L.P. (355.66K), AQR CAPITAL MANAGEMENT LLC (170.48K), Goldman Sachs Group Inc (170.2K), ACADIAN ASSET MANAGEMENT LLC (151.45K).
Leading sellers of Innospec shares for the quarter ending June 2026 were Allspring Global Investments Holdings, LLC (423.47K), UBS Group AG (411.91K), Assenagon Asset Management S.A. (218.1K), VICTORY CAPITAL MANAGEMENT INC (204.88K), Point72 Asset Management, L.P. (124.15K).
Per Business Quant data, the top 10 holders of Innospec for the quarter ending June 2026 are BlackRock, Inc. (4.38Mn), Allspring Global Investments Holdings, LLC (1.89Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (1.88Mn), DIMENSIONAL FUND ADVISORS LP (1.31Mn), VANGUARD CAPITAL MANAGEMENT LLC (1.11Mn), State Street Corp (996.03K), Nuveen, LLC (755.72K), GEODE CAPITAL MANAGEMENT, LLC (666.59K), Goldman Sachs Group Inc (662.21K), VICTORY CAPITAL MANAGEMENT INC (660.11K).

Form 13F Holdings

279 Institutional Holders

Report period 30 Jun, 2026

Total shares held 24.94Mn

Of outstanding 101.21%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	4,381,323	17.78%	▲502,348	+12.95%	$356.60Mn
2	Allspring Global Investments Holdings, LLC	0001890906	1,892,471	7.68%	▼423,471	-18.29%	$154.75Mn
3	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	1,884,244	7.65%	▲24,153	+1.30%	$153.36Mn
4	DIMENSIONAL FUND ADVISORS LP	0000354204	1,305,038	5.30%	▲62,949	+5.07%	$106.22Mn
5	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	1,108,107	4.50%	▼6,491	-0.58%	$90.19Mn
6	State Street Corp	0000093751	996,027	4.04%	▲31,692	+3.29%	$81.07Mn
7	Nuveen, LLC	0001871926	755,723	3.07%	▲112,475	+17.49%	$61.51Mn
8	GEODE CAPITAL MANAGEMENT, LLC	0001214717	666,589	2.70%	▲35,997	+5.71%	$54.26Mn
9	Goldman Sachs Group Inc	0000886982	662,210	2.69%	▲170,199	+34.59%	$53.90Mn
10	VICTORY CAPITAL MANAGEMENT INC	0001040188	660,110	2.68%	▼204,884	-23.69%	$53.73Mn
11	TWO SIGMA INVESTMENTS, LP	0001179392	568,709	2.31%	▼24,330	-4.10%	$46.29Mn
12	AQR CAPITAL MANAGEMENT LLC	0001167557	482,545	1.96%	▲170,480	+54.63%	$39.27Mn
13	BROWN ADVISORY INC	0001345929	408,468	1.66%	▲112,003	+37.78%	$33.25Mn
14	Jpmorgan Chase & Co	0000019617	370,574	1.50%	▼55,476	-13.02%	$30.00Mn
15	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0000884546	355,658	1.44%	▼10,216	-2.79%	$28.95Mn
15	Sixth Street Partners Management Company, L.P.	0001812095	355,658	1.44%	▲355,658	0.00%	$28.95Mn
16	GENDELL JEFFREY L	0001056581	324,504	1.32%	▲30,000	+10.19%	$26.41Mn
17	ROYCE & ASSOCIATES LP	0000906304	308,726	1.25%	▲47,390	+18.13%	$25.13Mn
18	Northern Trust Corp	0000073124	303,044	1.23%	▲18,805	+6.62%	$24.66Mn
19	Qube Research & Technologies Ltd	0001729829	285,849	1.16%	▼120,775	-29.70%	$23.27Mn

Showing 1 to 20 of 279 holders