- Type / Class
- Equity / Common Stock
- Shares outstanding
- 24,907,931
- Total 13F shares
- 24,299,165
- Share change
- +527,964
- Total reported value
- $1,859,374,510
- Put/Call ratio
- 0%
- Price per share
- $76.54
- Number of holders
- 258
- Value change
- +$40,259,836
- Number of buys
- 131
- Number of sells
- 120
Quarterly Holders Quick Answers
What is CUSIP 45768S105?
CUSIP 45768S105 identifies IOSP - INNOSPEC INC. - Common Stock in SEC institutional holdings data.
Need full ownership history?
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- Latest 13F filings for newly reported positions across managers.
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- SEC investors directory for manager drilldown.
Explore More Reporting Periods
Jump to adjacent filing periods for faster comparison and easier crawl discovery.
Recent filing periods for CUSIP 45768S105:
Top shareholders of IOSP - INNOSPEC INC. - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. |
13D/G
13F
|
Company |
15%
|
3,681,666
|
$330,981,773 | $0 | 31 Mar 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
13%
|
3,143,422
|
$242,546,441 | — | 30 Sep 2025 | |
| Allspring Global Investments Holdings, LLC |
13F
|
Company |
9.6%
|
2,391,749
|
$183,758,076 | — | 30 Sep 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
4.7%
|
1,166,975
|
$90,043,413 | — | 30 Sep 2025 | |
| STATE STREET CORP |
13F
|
Company |
3.7%
|
929,123
|
$71,691,131 | — | 30 Sep 2025 | |
| VICTORY CAPITAL MANAGEMENT INC |
13F
|
Company |
3.4%
|
835,895
|
$64,497,658 | — | 30 Sep 2025 | |
| FIRST TRUST ADVISORS LP |
13F
|
Company |
2.6%
|
640,562
|
$49,425,758 | — | 30 Sep 2025 | |
| WASATCH ADVISORS LP |
13D/G
|
— |
2.1%
|
528,144
|
$47,480,146 | -$94,572,193 | 31 Mar 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2.5%
|
614,212
|
$47,399,408 | — | 30 Sep 2025 | |
| ROYCE & ASSOCIATES LP |
13F
|
Company |
2%
|
492,614
|
$38,010,096 | — | 30 Sep 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
1.9%
|
481,488
|
$37,151,614 | — | 30 Sep 2025 | |
| WESTWOOD HOLDINGS GROUP INC |
13F
|
Company |
1.8%
|
447,962
|
$34,565,000 | — | 30 Sep 2025 | |
| Nuveen, LLC |
13F
|
Company |
1.7%
|
411,277
|
$31,734,133 | — | 30 Sep 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
1.5%
|
375,331
|
$28,960,539 | — | 30 Sep 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
1.4%
|
360,590
|
$27,823,124 | — | 30 Sep 2025 | |
| Qube Research & Technologies Ltd |
13F
|
Company |
1.4%
|
354,012
|
$27,315,566 | — | 30 Sep 2025 | |
| BROWN ADVISORY INC |
13F
|
Company |
1.4%
|
349,972
|
$27,003,850 | — | 30 Sep 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
1.3%
|
320,982
|
$24,766,972 | — | 30 Sep 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
1.2%
|
299,050
|
$23,074,697 | — | 30 Sep 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
1.1%
|
282,643
|
$21,808,722 | — | 30 Sep 2025 | |
| D. E. Shaw & Co., Inc. |
13F
|
Company |
1.1%
|
273,905
|
$21,134,510 | — | 30 Sep 2025 | |
| JANUS HENDERSON GROUP PLC |
13F
|
Company |
1%
|
258,107
|
$19,915,276 | — | 30 Sep 2025 | |
| MORGAN STANLEY |
13F
|
Company |
1%
|
253,753
|
$19,579,604 | — | 30 Sep 2025 | |
| Medina Value Partners, LLC |
13F
|
Company |
0.95%
|
235,956
|
$18,206,365 | — | 30 Sep 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.86%
|
215,185
|
$16,603,714 | — | 30 Sep 2025 | |
| AQR CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.73%
|
181,209
|
$13,982,086 | — | 30 Sep 2025 | |
| Jeffrey L. Gendell |
13F
|
Individual |
0.7%
|
174,949
|
$13,499,064 | — | 30 Sep 2025 | |
| UBS Group AG |
13F
|
Company |
0.66%
|
165,047
|
$12,735,027 | — | 30 Sep 2025 | |
| TWO SIGMA ADVISERS, LP |
13F
|
Company |
0.64%
|
158,200
|
$12,206,712 | — | 30 Sep 2025 | |
| Cubist Systematic Strategies, LLC |
13F
|
Company |
0.62%
|
154,165
|
$11,895,367 | — | 30 Sep 2025 | |
| Walleye Capital LLC |
13F
|
Company |
0.61%
|
150,806
|
$11,636,191 | — | 30 Sep 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.6%
|
148,205
|
$11,435,498 | — | 30 Sep 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
0.59%
|
146,500
|
$11,303,940 | — | 30 Sep 2025 | |
| Assenagon Asset Management S.A. |
13F
|
Company |
0.52%
|
129,397
|
$9,984,273 | — | 30 Sep 2025 | |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC |
13F
|
Company |
0.51%
|
126,086
|
$9,728,796 | — | 30 Sep 2025 | |
| PRINCIPAL FINANCIAL GROUP INC |
13F
|
Company |
0.48%
|
119,935
|
$9,254,186 | — | 30 Sep 2025 | |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.45%
|
111,506
|
$8,603,803 | — | 30 Sep 2025 | |
| PUBLIC SECTOR PENSION INVESTMENT BOARD |
13F
|
Company |
0.39%
|
96,866
|
$7,474,181 | — | 30 Sep 2025 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
0.37%
|
92,766
|
$7,157,824 | — | 30 Sep 2025 | |
| HRT FINANCIAL LP |
13F
|
Company |
0.36%
|
89,537
|
$6,908,000 | — | 30 Sep 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.33%
|
83,389
|
$6,434,295 | — | 30 Sep 2025 | |
| Numerai GP LLC |
13F
|
Company |
0.33%
|
81,541
|
$6,291,704 | — | 30 Sep 2025 | |
| Invesco Ltd. |
13F
|
Company |
0.32%
|
80,845
|
$6,237,999 | — | 30 Sep 2025 | |
| PANAGORA ASSET MANAGEMENT INC |
13F
|
Company |
0.32%
|
79,459
|
$6,131,056 | — | 30 Sep 2025 | |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC |
13F
|
Company |
0.31%
|
77,358
|
$5,968,943 | — | 30 Sep 2025 | |
| ProShare Advisors LLC |
13F
|
Company |
0.31%
|
77,261
|
$5,961,458 | — | 30 Sep 2025 | |
| MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.3%
|
75,695
|
$5,840,626 | — | 30 Sep 2025 | |
| RHUMBLINE ADVISERS |
13F
|
Company |
0.29%
|
72,488
|
$5,593,151 | — | 30 Sep 2025 | |
| Leeward Investments, LLC - MA |
13F
|
Company |
0.29%
|
72,124
|
$5,565,088 | — | 30 Sep 2025 | |
| SEI INVESTMENTS CO |
13F
|
Company |
0.27%
|
66,521
|
$5,132,953 | — | 30 Sep 2025 |
Institutional Holders of INNOSPEC INC. - Common Stock (IOSP) as of Q4 2025
As of 31 Dec 2025,
INNOSPEC INC. - Common Stock (IOSP) was held by
258 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
24,299,165 shares.
The largest 10 holders included
BlackRock, Inc., VANGUARD GROUP INC, Allspring Global Investments Holdings, LLC, DIMENSIONAL FUND ADVISORS LP, VICTORY CAPITAL MANAGEMENT INC, STATE STREET CORP, GEODE CAPITAL MANAGEMENT, LLC, MILLENNIUM MANAGEMENT LLC, Nuveen, LLC, and WESTWOOD HOLDINGS GROUP INC.
This page lists
258
institutional shareholders reporting positions in this security
for the Q4 2025 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
264
Q4 2025 holders
258
Holder diff
-6
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 Value $ | Q4 2025 Value $ | Value Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.