INNOSPEC INC. - Common Stock (IOSP)

Historical Holders from Q1 2014 to Q4 2025

Type / Class
Equity / Common Stock
Symbol
IOSP on Nasdaq
Shares outstanding
25,045,347
Price per share
$76.54
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares as of 30 Sep 2025
23,962,516
Total reported value
$1,848,221,284
% of total 13F portfolios
0%
Share change
-136,931
Value change
-$14,200,256
Avg buy value change
+0%
Avg sell value change
-0%
Number of holders
263
Price from insider filings
$74.09
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of INNOSPEC INC. - Common Stock (IOSP) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
BlackRock, Inc. 15% $330,908,140 3,681,666 BlackRock, Inc. 31 Mar 2025
WASATCH ADVISORS LP 2.1% -70% $47,469,583 -$94,551,153 528,144 -67% WASATCH ADVISORS LP 31 Mar 2025
As of 30 Sep 2025, INNOSPEC INC. - Common Stock (IOSP) has 263 institutional shareholders filing 13F forms. They hold 23,962,516 shares of 25,045,347 outstanding shares (96%) .

Top 25 institutional shareholders own 76% of the company.

Filer Ownership Nb Shares Share Change % Portfolio % Holdings Value
BlackRock, Inc. 15% 3,632,985 -0.8% 0% $280,321,148
VANGUARD GROUP INC 13% 3,143,422 -0.62% 0% $242,546,441
Allspring Global Investments Holdings, LLC 9.5% 2,391,749 -3.7% 0.29% $183,758,076
DIMENSIONAL FUND ADVISORS LP 4.7% 1,166,975 -0.17% 0.02% $90,043,413
STATE STREET CORP 3.7% 929,123 -4.2% 0% $71,691,131
VICTORY CAPITAL MANAGEMENT INC 3.3% 835,895 -13% 0.04% $64,497,658
FIRST TRUST ADVISORS LP 2.6% 640,562 -20% 0.04% $49,425,758
GEODE CAPITAL MANAGEMENT, LLC 2.5% 614,212 -15% 0% $47,399,408
ROYCE & ASSOCIATES LP 2% 492,614 -21% 0.38% $38,010,096
MILLENNIUM MANAGEMENT LLC 1.9% 481,488 +38% 0.03% $37,151,614
WESTWOOD HOLDINGS GROUP INC 1.8% 447,962 +8.6% 0.25% $34,565,000
Nuveen, LLC 1.6% 411,277 +39% 0.01% $31,734,133
BANK OF AMERICA CORP /DE/ 1.5% 375,331 +27% 0% $28,960,539
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 1.4% 360,590 +1.2% 0% $27,823,124
Qube Research & Technologies Ltd 1.4% 354,012 +15% 0.04% $27,315,566
BROWN ADVISORY INC 1.4% 349,972 -18% 0.04% $27,003,850
JPMORGAN CHASE & CO 1.3% 320,982 -0.06% 0% $24,766,972
NORTHERN TRUST CORP 1.2% 299,050 -1.1% 0% $23,074,697
GOLDMAN SACHS GROUP INC 1.1% 282,643 +170% 0% $21,808,722
D. E. Shaw & Co., Inc. 1.1% 273,905 +59% 0.02% $21,134,510
JANUS HENDERSON GROUP PLC 1% 258,107 +1.1% 0.01% $19,915,276
MORGAN STANLEY 1% 253,753 -3.8% 0% $19,579,604
Medina Value Partners, LLC 0.94% 235,956 4.3% $18,206,365
Bank of New York Mellon Corp 0.86% 215,184 -6.8% 0% $16,603,598
AQR CAPITAL MANAGEMENT LLC 0.72% 181,209 +152% 0.01% $13,982,086

Institutional Holders of INNOSPEC INC. - Common Stock (IOSP) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (% of par) Investors
2025 Q4 267,769 $20,514,351 +$8,205,863 7,654.22% 8
2025 Q3 23,962,516 $1,848,221,284 -$14,200,256 7,716% 263
2025 Q2 24,066,037 $2,032,008,818 -$244,656 8,409% 262
2025 Q1 23,973,535 $2,271,684,317 -$35,858,842 9,475% 269
2024 Q4 24,214,288 $2,659,497,067 +$25,955,419 11,006% 261
2024 Q3 24,004,325 $2,715,710,284 -$8,925,579 11,309% 258
2024 Q2 23,988,077 $2,964,324,973 +$20,060,498 12,359% 265
2024 Q1 23,842,682 $3,073,687,713 -$22,916,224 12,894% 235
2023 Q4 159,882 $19,703,857 +$4,762,240 12,324% 2
2023 Q3 23,372,250 $2,388,624,100 +$6,727,436 10,220% 208
2023 Q2 23,290,576 $2,339,362,426 -$29,313,516 10,044% 199
2023 Q1 23,579,637 $2,420,876,996 +$15,002,589 10,267% 215
2022 Q4 23,435,873 $2,410,890,021 +$988,379 10,286% 216
2022 Q3 23,696,463 $2,030,336,876 -$20,363,099 8,567% 181
2022 Q2 23,923,545 $2,289,652,140 +$26,508,001 9,579% 192
2022 Q1 23,774,125 $2,201,028,190 +$3,194,182 9,255% 178
2021 Q4 23,555,688 $2,128,164,908 -$185,573,857 9,033.97% 176
2021 Q3 23,289,349 $1,961,566,654 +$4,695,829 8,422.01% 181
2021 Q2 23,358,063 $2,116,506,807 -$19,572,662 9,061.03% 174
2021 Q1 23,396,414 $2,402,806,123 -$16,528,651 10,268.98% 175
2020 Q4 23,714,603 $2,151,818,804 +$62,821,308 9,073% 166
2020 Q3 23,232,444 $1,471,378,736 -$21,074,293 6,332% 180
2020 Q2 23,521,227 $1,816,407,760 +$20,329,198 7,724.84% 176
2020 Q1 23,231,961 $1,614,241,269 -$16,278,951 6,949% 171
2019 Q4 23,274,584 $2,407,176,609 +$21,740,679 10,344% 201
2019 Q3 23,064,051 $2,055,831,488 -$9,478,504 8,913.92% 203
2019 Q2 23,106,024 $2,108,040,734 +$53,329,001 9,123.92% 188
2019 Q1 23,208,510 $1,934,462,617 +$18,723,962 8,334.94% 179
2018 Q4 22,889,489 $1,413,655,873 -$13,880,531 6,176% 170
2018 Q3 23,196,100 $1,778,307,142 +$12,315,330 7,674.97% 179
2018 Q2 23,050,240 $1,764,667,673 +$48,364,187 7,655.01% 178
2018 Q1 22,763,170 $1,561,945,440 +$16,153,217 6,859.99% 172
2017 Q4 22,505,607 $1,588,932,816 +$23,896,960 7,059.99% 179
2017 Q3 22,173,191 $1,367,120,043 -$3,186,601 6,164.97% 173
2017 Q2 22,098,849 $1,448,529,591 +$18,897,887 6,554.95% 165
2017 Q1 21,775,539 $1,410,000,430 +$173,998,707 6,474.99% 176
2016 Q4 22,204,233 $1,520,865,778 +$53,444,800 6,849.87% 195
2016 Q3 21,155,550 $1,285,399,942 +$3,159,556 6,080.77% 200
2016 Q2 21,416,123 $984,920,393 -$18,604,390 4,598.99% 178
2016 Q1 21,800,074 $945,468,074 -$19,025,458 4,336% 184
2015 Q4 21,942,504 $1,191,613,849 -$36,806,413 5,430.99% 189
2015 Q3 22,741,020 $1,057,694,663 +$28,806,865 4,651.03% 162
2015 Q2 21,910,335 $986,844,519 -$801,630 4,504.01% 145
2015 Q1 22,263,384 $1,032,422,250 -$1,340,661 4,639% 133
2014 Q4 22,352,587 $954,384,594 -$27,139,440 4,269.96% 121
2014 Q3 22,989,510 $825,321,952 +$16,506,034 3,590.03% 103
2014 Q2 22,500,581 $971,126,734 +$4,161,990 4,317.01% 105
2014 Q1 22,331,411 $1,009,903,775 +$11,629,813 4,522.96% 104