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 Q1 2017?

181 institutional investors reported IOSP - INNOSPEC INC. - Common Stock for Q1 2017. Use the holders table for investor-level position and value details.

INNOSPEC INC. - Common Stock (IOSP)

CUSIP: 45768S105

Q1 2017 13F Holders as of 31 Mar 2017

Type / Class: Equity / Common Stock
Shares outstanding: 25,045,347
Total 13F shares: 22,160,057
Share change: +2,708,764
Total reported value: $1,434,900,430
Put/Call ratio: 0%
Price per share: $64.75
Number of holders: 181
Value change: +$174,009,041
Number of buys: 78
Number of sells: 102

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?
Open the full security ownership history page.

Next holder-history checks

These links keep the next click tied to holder verification, nearby quarters, or outside-13F ownership context.

Back to full security ownership history for the broader multi-quarter picture.
Latest 13F filings for newly reported positions across managers.
Latest Schedule 13D/13G reports for ownership changes outside the 13F cadence.
SEC investors directory for manager drilldown.

Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q2 2017
Previous quarter: Q4 2016

Recent filing periods for CUSIP 45768S105:

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

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
FMR LLC	13F	Company	11%	2,739,249	$187,639,000	—	31 Dec 2016	13F
VANGUARD GROUP INC	13F	Company	7.9%	1,982,465	$135,799,000	—	31 Dec 2016	13F
BlackRock Fund Advisors	13F	Company	7.6%	1,903,280	$130,375,000	—	31 Dec 2016	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	5.3%	1,325,355	$90,788,000	—	31 Dec 2016	13F
Huber Capital Management LLC	13F	Company	5%	1,261,751	$86,430,000	—	31 Dec 2016	13F
PRICE T ROWE ASSOCIATES INC /MD/	13F	Company	3.5%	884,924	$60,617,000	—	31 Dec 2016	13F
Champlain Investment Partners, LLC	13F	Company	3.2%	812,250	$55,639,000	—	31 Dec 2016	13F
WELLS FARGO & COMPANY/MN	13F	Company	2.9%	718,985	$49,250,000	—	31 Dec 2016	13F
BlackRock Institutional Trust Company, N.A.	13F	Company	2.6%	641,775	$43,962,000	—	31 Dec 2016	13F
STATE STREET CORP	13F	Company	2.1%	526,674	$36,077,000	—	31 Dec 2016	13F
JAMES INVESTMENT RESEARCH, INC.	13F	Company	1.9%	482,070	$33,022,000	—	31 Dec 2016	13F
Bank of New York Mellon Corp	13F	Company	1.8%	443,529	$30,381,000	—	31 Dec 2016	13F
NORTHERN TRUST CORP	13F	Company	1.6%	397,741	$27,244,000	—	31 Dec 2016	13F
NORGES BANK	13F	Company	1.5%	385,514	$26,408,000	—	31 Dec 2016	13F
EAGLE ASSET MANAGEMENT INC	13F	Company	1.4%	357,153	$24,464,000	—	31 Dec 2016	13F
AMERICAN CENTURY COMPANIES INC	13F	Company	1.4%	345,986	$23,700,000	—	31 Dec 2016	13F
AMERIPRISE FINANCIAL INC	13F	Company	1.2%	306,996	$21,031,000	—	31 Dec 2016	13F
Invesco Ltd.	13F	Company	1%	261,475	$17,912,000	—	31 Dec 2016	13F
JPMORGAN CHASE & CO	13F	Company	1%	250,908	$17,188,000	—	31 Dec 2016	13F
EDGE ASSET MANAGEMENT, INC	13F	Company	0.9%	225,640	$15,456,000	—	31 Dec 2016	13F
KIRR MARBACH & CO LLC /IN/	13F	Company	0.84%	210,392	$14,412,000	—	31 Dec 2016	13F
ROYCE & ASSOCIATES LP	13F	Company	0.8%	200,631	$13,743,000	—	31 Dec 2016	13F
TEACHERS ADVISORS, LLC	13F	Company	0.77%	193,724	$13,270,000	—	31 Dec 2016	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.76%	191,395	$13,110,000	—	31 Dec 2016	13F
FIRST WILSHIRE SECURITIES MANAGEMENT INC	13F	Company	0.76%	190,229	$13,031,000	—	31 Dec 2016	13F
PRINCIPAL FINANCIAL GROUP INC	13F	Company	0.76%	190,071	$13,020,000	—	31 Dec 2016	13F
WADDELL & REED FINANCIAL INC	13F	Company	0.76%	189,108	$12,954,000	—	31 Dec 2016	13F
EMERALD ADVISERS, LLC	13F	Company	0.7%	175,548	$12,025,000	—	31 Dec 2016	13F
AQR CAPITAL MANAGEMENT LLC	13F	Company	0.67%	167,099	$11,446,000	—	31 Dec 2016	13F
LAZARD ASSET MANAGEMENT LLC	13F	Company	0.66%	164,819	$11,290,000	—	31 Dec 2016	13F
TIAA CREF INVESTMENT MANAGEMENT LLC	13F	Company	0.61%	152,982	$10,479,000	—	31 Dec 2016	13F
Monarch Partners Asset Management LLC	13F	Company	0.58%	145,510	$9,967,000	—	31 Dec 2016	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.52%	131,297	$8,994,000	—	31 Dec 2016	13F
Hillcrest Asset Management LLC	13F	Company	0.52%	130,792	$8,959,000	—	31 Dec 2016	13F
BlackRock Investment Management, LLC	13F	Company	0.51%	127,804	$8,755,000	—	31 Dec 2016	13F
Opus Capital Group, LLC	13F	Company	0.46%	115,989	$7,945,000	—	31 Dec 2016	13F
MORGAN STANLEY	13F	Company	0.46%	115,526	$7,914,000	—	31 Dec 2016	13F
AHL Partners LLP	13F	Company	0.44%	110,867	$7,594,000	—	31 Dec 2016	13F
Brandywine Global Investment Management, LLC	13F	Company	0.4%	100,616	$6,893,000	—	31 Dec 2016	13F
EMERALD MUTUAL FUND ADVISERS TRUST	13F	Company	0.4%	99,022	$6,783,000	—	31 Dec 2016	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	0.38%	96,400	$6,603,000	—	31 Dec 2016	13F
MARTINGALE ASSET MANAGEMENT L P	13F	Company	0.31%	76,915	$5,269,000	—	31 Dec 2016	13F
THRIVENT FINANCIAL FOR LUTHERANS	13F	Company	0.28%	70,178	$4,807,000	—	31 Dec 2016	13F
BANK OF AMERICA CORP /DE/	13F	Company	0.26%	65,964	$4,519,000	—	31 Dec 2016	13F
ALLIANCEBERNSTEIN L.P.	13F	Company	0.26%	64,200	$4,398,000	—	31 Dec 2016	13F
PARAMETRIC PORTFOLIO ASSOCIATES LLC	13F	Company	0.26%	63,925	$4,379,000	—	31 Dec 2016	13F
Mondrian Investment Partners LTD	13F	Company	0.25%	61,730	$4,229,000	—	31 Dec 2016	13F
ASSETMARK, INC	13F	Company	0.25%	61,502	$4,213,000	—	31 Dec 2016	13F
BlackRock Group LTD	13F	Company	0.24%	59,488	$4,073,000	—	31 Dec 2016	13F
GOLDMAN SACHS GROUP INC	13F	Company	0.24%	59,049	$4,045,000	—	31 Dec 2016	13F

Institutional Holders of INNOSPEC INC. - Common Stock (IOSP) as of Q1 2017

As of 31 Mar 2017, INNOSPEC INC. - Common Stock (IOSP) was held by 181 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 22,160,057 shares. The largest 10 holders included BlackRock Inc., FMR LLC, VANGUARD GROUP INC, DIMENSIONAL FUND ADVISORS LP, PRICE T ROWE ASSOCIATES INC /MD/, WELLS FARGO & COMPANY/MN, Huber Capital Management LLC, Champlain Investment Partners, LLC, STATE STREET CORP, and LAZARD ASSET MANAGEMENT LLC. This page lists 181 institutional shareholders reporting positions in this security for the Q1 2017 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q1 2017 vs Q4 2016 Across Filers

Q4 2016 holders

196

Q1 2017 holders

181

Holder diff

-15

Investor	Q4 2016 Shares	Q1 2017 Shares	Share Diff	Share Chg %	Q4 2016 Value $	Q1 2017 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.