Assenagon Asset Management S.A. Ionis Pharmaceuticals Inc Transaction History

Assenagon Asset Management S.A.

$65.1 Billion
Q3 2025

A detailed history of Assenagon Asset Management S.A. transactions in Ionis Pharmaceuticals Inc stock. As of the latest transaction made, Assenagon Asset Management S.A. holds 312,297 shares of IONS stock, worth $23.2 Million. This represents 0.03% of its overall portfolio holdings.

Number of Shares

312,297

Previous 17,654 1668.99%

Holding current value

$23.2 Million

Previous $697,000 2831.13%

% of portfolio

0.03%

Previous 0.0%

17 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Oct 07, 2025	BUY	$39.94 - $65.42 $11.8 Million - $19.3 Million	294,643 Added 1668.99%	312,297 $20.4 Million
Q2 2025 Jul 11, 2025	BUY	$25.51 - $40.0 $450,353 - $706,160	17,654 New	17,654 $697,000
Q4 2024 Jan 14, 2025	BUY	$33.73 - $40.36 $4.34 Million - $5.19 Million	128,619 Added 967.21%	141,917 $4.96 Million
Q3 2024 Oct 23, 2024	SELL	$40.06 - $51.86 $437,775 - $566,726	-10,928 Reduced 45.11%	13,298 $532,000
Q2 2024 Jul 18, 2024	SELL	$36.45 - $47.7 $9 Million - $11.8 Million	-247,037 Reduced 91.07%	24,226 $1.15 Million
Q1 2024 Apr 24, 2024	BUY	$42.03 - $53.55 $3.65 Million - $4.65 Million	86,862 Added 47.1%	271,263 $11.8 Million
Q4 2023 Jan 17, 2024	BUY	$43.39 - $51.63 $8 Million - $9.52 Million	184,401 New	184,401 $9.33 Million
Q1 2023 Apr 18, 2023	SELL	$33.58 - $41.2 $13.9 Million - $17.1 Million	-414,617 Reduced 93.85%	27,185 $971,000
Q4 2022 Jan 12, 2023	SELL	$37.12 - $46.52 $406,760 - $509,766	-10,958 Reduced 2.42%	441,802 $16.7 Million
Q3 2022 Oct 27, 2022	BUY	$36.54 - $48.66 $4.09 Million - $5.45 Million	112,044 Added 32.88%	452,760 $20 Million
Q2 2022 Jul 27, 2022	SELL	$31.71 - $43.0 $544,777 - $738,740	-17,180 Reduced 4.8%	340,716 $12.6 Million
Q1 2022 Apr 25, 2022	BUY	$29.88 - $37.04 $9.25 Million - $11.5 Million	309,495 Added 639.44%	357,896 $13.3 Million
Q4 2021 Feb 01, 2022	BUY	$25.61 - $35.1 $1.09 Million - $1.49 Million	42,379 Added 703.74%	48,401 $1.47 Million
Q3 2021 Oct 19, 2021	BUY	$33.54 - $40.55 $201,977 - $244,192	6,022 New	6,022 $202,000
Q4 2020 Feb 01, 2021	SELL	$45.3 - $60.27 $1.65 Million - $2.2 Million	-36,475 Closed	0 $0
Q3 2020 Oct 07, 2020	BUY	$47.45 - $62.95 $1.55 Million - $2.06 Million	32,727 Added 873.19%	36,475 $1.73 Million
Q2 2020 Jul 21, 2020	BUY	$46.85 - $61.05 $175,593 - $228,815	3,748 New	3,748 $221,000

Others Institutions Holding IONS

# of Institutions

431

Shares Held

149M

Call Options Held

1.72M

Put Options Held

722K

View Full List

About IONIS PHARMACEUTICALS INC

Ticker IONS
Exchange NASDAQ
Sector Healthcare
Industry Biotechnology
Shares Outstandng 141,940,992
Market Cap $10.5B
Description
Ionis Pharmaceuticals, Inc. discovers and develops RNA-targeted therapeutics in the United States. The company offers SPINRAZA for spinal muscular atrophy (SMA) in pediatric and adult patients; TEGSEDI, an injection for the treatment of polyneuropathy of hereditary transthyretin-mediated amyloidosis in adults; and WAYLIVRA, a treatment for famil...

More about IONS

Track This Portfolio

Portfolio Update

Get notified when there are updates to the investment portfolio of Assenagon Asset Management S.A., based on Form 13F filings with the SEC.

News

Stay updated on Assenagon Asset Management S.A. with notifications on news.

Account

Assenagon Asset Management S.A. Ionis Pharmaceuticals Inc Transaction History