Institutional shares held 24.8 Million
0 calls
0 puts
Total value of holdings $2.12B
$0 calls
$0 puts
Market Cap $2.11B
24,790,700 Shares Out.
Institutional ownership 99.92%
# of Institutions 276


Latest Institutional Activity in IOSP

Top Purchases

Q2 2025
Millennium Management LLC Shares Held: 350K ($29.8M)
Q2 2025
Norges Bank Shares Held: 134K ($11.4M)
Q2 2025
Qube Research & Technologies LTD Shares Held: 307K ($26.1M)
Q2 2025
Brown Advisory Inc Shares Held: 427K ($36.3M)
Q2 2025
Cubist Systematic Strategies, LLC Shares Held: 219K ($18.7M)

Top Sells

Q2 2025
Janus Henderson Group PLC Shares Held: 255K ($21.8M)
Q2 2025
Voya Investment Management LLC Shares Held: 147K ($12.6M)
Q2 2025
Nuveen, LLC Shares Held: 296K ($25.2M)
Q2 2025
Victory Capital Management Inc Shares Held: 958K ($81.7M)
Q2 2025
Raymond James Financial Inc Shares Held: 70.7K ($6.02M)

About IOSP

Innospec Inc. develops, manufactures, blends, markets, and supplies specialty chemicals in the United States, rest of North America, the United Kingdom, rest of Europe, and internationally. The company's Fuel Specialties segment offers a range of specialty chemical products that are used as additives in various fuels. This segment's products are used in the operation of automotive, marine, and aviation engines; power station generators; and heating oil. Its Performance Chemicals segment provides technology-based solutions for its customers' processes or products that focuses on the personal care, home care, agrochemical, and metal extraction markets. The company's Oilfield Services segment develops and markets chemical solutions for fracturing, stimulation, and completion operations; and products for oil and gas production, as well as products to prevent loss of mud in drilling operations. It sells its products primarily to oil and gas exploration and production companies, oil refineries, fuel manufacturers and users, personal care and home care companies, formulators of agrochemical and metal extraction formulations, and other chemical and industrial companies. The company was formerly known as Octel Corp. and changed its name to Innospec Inc. in January 2006. Innospec Inc. was founded in 1938 and is headquartered in Englewood, Colorado.


Insider Transactions at IOSP

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
78.2K Shares
From 16 Insiders
Grant, award, or other acquisition 76K shares
Exercise of conversion of derivative security 2.25K shares
Sell / Disposition
32.7K Shares
From 15 Insiders
Open market or private sale 17.5K shares
Payment of exercise price or tax liability 14.9K shares
Sale (or disposition) back to the issuer 321 shares

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