Assenagon Asset Management S.A. Innospec Inc. Transaction History

Assenagon Asset Management S.A.

$65.1 Billion
Q3 2025

A detailed history of Assenagon Asset Management S.A. transactions in Innospec Inc. stock. As of the latest transaction made, Assenagon Asset Management S.A. holds 129,397 shares of IOSP stock, worth $9.63 Million. This represents 0.02% of its overall portfolio holdings.

Number of Shares

129,397

Previous 21,143 512.01%

Holding current value

$9.63 Million

Previous $1.78 Million 461.85%

% of portfolio

0.02%

Previous 0.0%

22 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Oct 07, 2025	BUY	$77.06 - $89.32 $8.34 Million - $9.67 Million	108,254 Added 512.01%	129,397 $9.98 Million
Q2 2025 Jul 11, 2025	BUY	$82.54 - $95.65 $1.75 Million - $2.02 Million	21,143 New	21,143 $1.78 Million
Q4 2024 Jan 14, 2025	SELL	$107.78 - $124.9 $11.9 Million - $13.8 Million	-110,534 Reduced 81.65%	24,835 $2.73 Million
Q3 2024 Oct 23, 2024	BUY	$104.8 - $131.4 $1.6 Million - $2.01 Million	15,287 Added 12.73%	135,369 $15.3 Million
Q2 2024 Jul 18, 2024	BUY	$120.0 - $131.58 $7.15 Million - $7.84 Million	59,554 Added 98.39%	120,082 $14.8 Million
Q1 2024 Apr 24, 2024	BUY	$114.8 - $129.55 $4.62 Million - $5.21 Million	40,250 Added 198.49%	60,528 $7.8 Million
Q4 2023 Jan 17, 2024	BUY	$96.36 - $125.14 $815,494 - $1.06 Million	8,463 Added 71.63%	20,278 $2.5 Million
Q3 2023 Nov 06, 2023	BUY	$98.35 - $109.9 $1.16 Million - $1.3 Million	11,815 New	11,815 $1.21 Million
Q4 2022 Jan 12, 2023	BUY	$84.41 - $112.66 $1.15 Million - $1.54 Million	13,626 New	13,626 $1.4 Million
Q4 2021 Feb 01, 2022	SELL	$81.2 - $94.12 $938,672 - $1.09 Million	-11,560 Closed	0 $0
Q3 2021 Oct 19, 2021	BUY	$82.36 - $95.69 $952,081 - $1.11 Million	11,560 New	11,560 $974,000
Q2 2021 Jul 15, 2021	SELL	$90.0 - $105.95 $4.5 Million - $5.3 Million	-50,031 Closed	0 $0
Q1 2021 Apr 26, 2021	BUY	$87.79 - $105.42 $4.39 Million - $5.27 Million	50,031 New	50,031 $5.14 Million
Q4 2020 Feb 01, 2021	SELL	$62.76 - $90.73 $2.59 Million - $3.74 Million	-41,189 Closed	0 $0
Q3 2020 Oct 07, 2020	SELL	$62.99 - $82.87 $1.61 Million - $2.11 Million	-25,500 Reduced 38.24%	41,189 $2.61 Million
Q2 2020 Jul 21, 2020	BUY	$64.14 - $84.46 $4.28 Million - $5.63 Million	66,689 New	66,689 $5.15 Million
Q3 2019 Oct 16, 2019	SELL	$81.92 - $95.36 $1.06 Million - $1.24 Million	-13,000 Closed	0 $0
Q2 2019 Aug 12, 2019	BUY	$79.07 - $91.24 $257,056 - $296,621	3,251 Added 33.35%	13,000 $1.19 Million
Q1 2019 Apr 26, 2019	BUY	$60.21 - $84.58 $586,987 - $824,570	9,749 New	9,749 $813,000
Q2 2018 Jul 17, 2018	SELL	$66.7 - $80.05 $1.1 Million - $1.32 Million	-16,445 Closed	0 $0
Q1 2018 Apr 30, 2018	SELL	$63.6 - $73.85 $3.8 Million - $4.41 Million	-59,707 Reduced 78.41%	16,445 $1.13 Million
Q4 2017 Jan 25, 2018	BUY	$60.95 - $72.95 $4.64 Million - $5.56 Million	76,152	76,152 $5.38 Million

Others Institutions Holding IOSP

# of Institutions

278

Shares Held

24.6M

Call Options Held

Put Options Held

View Full List

About INNOSPEC INC.

Ticker IOSP
Exchange NASDAQ
Sector Basic Materials
Industry Specialty Chemicals
Shares Outstandng 24,790,700
Market Cap $1.84B
Description
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...

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Assenagon Asset Management S.A. Innospec Inc. Transaction History