What does CUSIP 45768S105 represent in this 13F holders report?

CUSIP 45768S105 is the security identifier for IOSP - INNOSPEC INC. - Common Stock used to aggregate holder disclosures.

How many institutions held IOSP - INNOSPEC INC. - Common Stock in Q4 2023?

223 institutional investors reported IOSP - INNOSPEC INC. - Common Stock for Q4 2023. Use the holders table for investor-level position and value details.

INNOSPEC INC. - Common Stock (IOSP)

CUSIP: 45768S105

Q4 2023 13F Holders as of 31 Dec 2023

Type / Class: Equity / Common Stock
Shares outstanding: 24,907,931
Total 13F shares: 23,984,746
Share change: +116,615
Total reported value: $2,955,807,103
Put/Call ratio: 109%
Price per share: $123.24
Number of holders: 223
Value change: +$15,777,725
Number of buys: 92
Number of sells: 110

Security key

45768S105

Report period

Q4 2023

Institutions

223

Top holders

IOSP full security history Ownership snapshot Full 13F holder table Newer quarter: Q1 2024 Previous quarter: Q3 2023 INNOSPEC INC. SEC filings INNOSPEC INC. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 45768S105

Newer quarter: Q1 2024 Previous quarter: Q3 2023

Recent filing periods:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Ownership snapshot

Top shareholders of IOSP - INNOSPEC INC. - Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Lead holder

BlackRock Finance, Inc.

13D/G signal

—

Evidence rows

Latest as of

30 Sep 2023

13F Lead comparable stake: 15% Showing first 8 of 50 holder rows. Open remaining rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
BlackRock Finance, Inc.	13F Company 13F	15%	$392,054,107 3,836,146 shares	—	30 Sep 2023
VANGUARD GROUP INC	13F Company 13F	12%	$300,606,583 2,941,356 shares	—	30 Sep 2023
Allspring Global Investments Holdings, LLC	13F Company 13F	9.6%	$245,313,520 2,400,328 shares	—	30 Sep 2023
WASATCH ADVISORS LP	13F Company 13F	7.9%	$201,862,374 1,975,170 shares	—	30 Sep 2023
DIMENSIONAL FUND ADVISORS LP	13F Company 13F	4.9%	$124,897,831 1,222,075 shares	—	30 Sep 2023
VICTORY CAPITAL MANAGEMENT INC	13F Company 13F	4.6%	$116,346,626 1,138,421 shares	—	30 Sep 2023
STATE STREET CORP	13F Company 13F	3.6%	$92,855,036 908,562 shares	—	30 Sep 2023
ROYCE & ASSOCIATES LP	13F Company 13F	3.4%	$86,629,830 847,650 shares	—	30 Sep 2023

Show 42 additional holder rows in the full holder list

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
Champlain Investment Partners, LLC	13F Company 13F	3.3%	$84,113,666 823,030 shares	—	30 Sep 2023
JANUS HENDERSON GROUP PLC	13F Company 13F	2.3%	$59,289,408 580,137 shares	—	30 Sep 2023
GEODE CAPITAL MANAGEMENT, LLC	13F Company 13F	2.3%	$57,809,786 565,589 shares	—	30 Sep 2023
Nuveen Asset Management, LLC	13F Company 13F	1.8%	$46,394,713 453,960 shares	—	30 Sep 2023
NORTHERN TRUST CORP	13F Company 13F	1.6%	$41,018,072 401,351 shares	—	30 Sep 2023
WESTWOOD HOLDINGS GROUP INC	13F Company 13F	1.3%	$31,965,000 312,767 shares	—	30 Sep 2023
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F Company 13F	1.2%	$30,520,497 298,635 shares	—	30 Sep 2023
GOLDMAN SACHS GROUP INC	13F Company 13F	1.1%	$29,017,767 283,931 shares	—	30 Sep 2023
Bank of New York Mellon Corp	13F Company 13F	1.1%	$26,924,752 263,452 shares	—	30 Sep 2023
MORGAN STANLEY	13F Company 13F	0.81%	$20,552,569 201,101 shares	—	30 Sep 2023
EAGLE ASSET MANAGEMENT INC	13F Company 13F	0.76%	$19,387,340 189,700 shares	—	30 Sep 2023
BANK OF AMERICA CORP /DE/	13F Company 13F	0.73%	$18,675,518 182,735 shares	—	30 Sep 2023
NORGES BANK	13F Company 13F	0.73%	$18,632,184 182,311 shares	—	30 Sep 2023
Telemark Asset Management, LLC	13F Company 13F	0.6%	$15,330,000 150,000 shares	—	30 Sep 2023
Invesco Ltd.	13F Company 13F	0.57%	$14,625,739 143,109 shares	—	30 Sep 2023
PRINCIPAL FINANCIAL GROUP INC	13F Company 13F	0.55%	$14,016,218 137,145 shares	—	30 Sep 2023
JPMORGAN CHASE & CO	13F Company 13F	0.54%	$13,626,735 133,334 shares	—	30 Sep 2023
SEI INVESTMENTS CO	13F Company 13F	0.52%	$13,133,468 128,506 shares	—	30 Sep 2023
VOYA INVESTMENT MANAGEMENT LLC	13F Company 13F	0.49%	$12,390,728 121,240 shares	—	30 Sep 2023
ACADIAN ASSET MANAGEMENT LLC	13F Company 13F	0.45%	$11,393,000 111,652 shares	—	30 Sep 2023
BESSEMER GROUP INC	13F Company 13F	0.38%	$9,573,000 93,666 shares	—	30 Sep 2023
RAYMOND JAMES & ASSOCIATES	13F Company 13F	0.36%	$9,213,219 90,149 shares	—	30 Sep 2023
AMERIPRISE FINANCIAL INC	13F Company 13F	0.36%	$9,149,557 89,526 shares	—	30 Sep 2023
SEGALL BRYANT & HAMILL, LLC	13F Company 13F	0.35%	$8,984,198 87,908 shares	—	30 Sep 2023
Huber Capital Management LLC	13F Company 13F	0.33%	$8,516,631 83,333 shares	—	30 Sep 2023
OSTERWEIS CAPITAL MANAGEMENT INC	13F Company 13F	0.33%	$8,416,681 82,355 shares	—	30 Sep 2023
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC	13F Company 13F	0.33%	$8,370,180 81,900 shares	—	30 Sep 2023
KIRR MARBACH & CO LLC /IN/	13F Company 13F	0.32%	$8,216,778 80,399 shares	—	30 Sep 2023
ALGERT GLOBAL LLC	13F Company 13F	0.31%	$8,001,000 78,288 shares	—	30 Sep 2023
RHUMBLINE ADVISERS	13F Company 13F	0.3%	$7,645,765 74,812 shares	—	30 Sep 2023
Legal & General Group Plc	13F Company 13F	0.28%	$7,160,030 70,059 shares	—	30 Sep 2023
Leeward Investments, LLC - MA	13F Company 13F	0.28%	$7,148,277 69,944 shares	—	30 Sep 2023
THRIVENT FINANCIAL FOR LUTHERANS	13F Company 13F	0.27%	$6,984,000 68,341 shares	—	30 Sep 2023
WELLS FARGO & COMPANY/MN	13F Company 13F	0.24%	$6,175,980 60,430 shares	—	30 Sep 2023
Swiss National Bank	13F Company 13F	0.22%	$5,590,647 54,703 shares	—	30 Sep 2023
CREDIT SUISSE AG/	13F Company 13F	0.19%	$4,899,570 47,941 shares	—	30 Sep 2023
Moran Wealth Management, LLC	13F Company 13F	0.19%	$4,740,547 46,385 shares	—	30 Sep 2023
Cubist Systematic Strategies, LLC	13F Company 13F	0.18%	$4,474,214 43,779 shares	—	30 Sep 2023
ZWJ INVESTMENT COUNSEL INC	13F Company 13F	0.16%	$4,070,075 39,821 shares	—	30 Sep 2023
Qube Research & Technologies Ltd	13F Company 13F	0.16%	$3,991,421 39,055 shares	—	30 Sep 2023
PANAGORA ASSET MANAGEMENT INC	13F Company 13F	0.16%	$3,981,405 38,957 shares	—	30 Sep 2023
B. Metzler seel. Sohn & Co. AG	13F Company 13F	0.15%	$3,795,401 37,137 shares	—	30 Sep 2023

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q4 2023

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

223

23,984,746

Rows loaded

223

Investor	Option	Weight %	Change %	Reported value	* Price	Shares	Share Change	Activity	Report Period

* Reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. An asterisk next to the price means the price is likely invalid.

Compare Q4 2023 vs Q3 2023 Across Filers

Q3 2023 holders

212

Q4 2023 holders

223

Holder diff

Investor	Q3 2023 Shares	Q4 2023 Shares	Share Diff	Share Chg %	Q3 2023 value	Q4 2023 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend