Janus Henderson Group PLC Ionis Pharmaceuticals Inc Transaction History

Janus Henderson Group PLC

$194 Billion
Q2 2025

A detailed history of Janus Henderson Group PLC transactions in Ionis Pharmaceuticals Inc stock. As of the latest transaction made, Janus Henderson Group PLC holds 63,877 shares of IONS stock, worth $4.74 Million. This represents 0.0% of its overall portfolio holdings.

Number of Shares

63,877

Previous 63,877 -0.0%

Holding current value

$4.74 Million

Previous $1.93 Million 30.93%

% of portfolio

0.0%

Previous 0.0%

26 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q4 2024 Feb 14, 2025	BUY	$33.73 - $40.36 $165,276 - $197,764	4,900 Added 8.31%	63,877 $2.23 Million
Q2 2024 Aug 14, 2024	SELL	$36.45 - $47.7 $26,973 - $35,298	-740 Reduced 1.24%	58,977 $2.81 Million
Q1 2024 May 15, 2024	BUY	$42.03 - $53.55 $588 - $749	14 Added 0.02%	59,717 $2.59 Million
Q4 2023 Feb 14, 2024	SELL	$43.39 - $51.63 $4,469 - $5,317	-103 Reduced 0.17%	59,703 $3.02 Million
Q3 2023 Nov 14, 2023	BUY	$38.5 - $47.13 $154 - $188	4 Added 0.01%	59,806 $2.71 Million
Q2 2023 Aug 14, 2023	SELL	$34.73 - $43.33 $1,979 - $2,469	-57 Reduced 0.1%	59,802 $2.45 Million
Q1 2023 May 15, 2023	BUY	$33.58 - $41.2 $206,080 - $252,844	6,137 Added 11.42%	59,859 $2.14 Million
Q4 2022 Feb 14, 2023	BUY	$37.12 - $46.52 $1.14 Million - $1.42 Million	30,582 Added 132.16%	53,722 $2.03 Million
Q3 2022 Nov 14, 2022	SELL	$36.54 - $48.66 $2,448 - $3,260	-67 Reduced 0.29%	23,140 $1.02 Million
Q2 2022 Aug 15, 2022	SELL	$31.71 - $43.0 $79,782 - $108,188	-2,516 Reduced 9.78%	23,207 $858,000
Q1 2022 May 16, 2022	BUY	$29.88 - $37.04 $209 - $259	7 Added 0.03%	25,723 $953,000
Q4 2021 Feb 14, 2022	BUY	$25.61 - $35.1 $306,500 - $420,076	11,968 Added 87.05%	25,716 $783,000
Q3 2021 Nov 16, 2021	BUY	$33.54 - $40.55 $461,107 - $557,481	13,748 New	13,748 $461,000
Q2 2021 Aug 16, 2021	SELL	$34.54 - $47.25 $2.65 Million - $3.62 Million	-76,644 Closed	0 $0
Q1 2021 May 17, 2021	BUY	$42.51 - $63.78 $1.11 Million - $1.66 Million	26,018 Added 51.39%	76,644 $3.45 Million
Q4 2020 Feb 16, 2021	SELL	$45.3 - $60.27 $455,400 - $605,894	-10,053 Reduced 16.57%	50,626 $2.86 Million
Q3 2020 Nov 16, 2020	SELL	$47.45 - $62.95 $419,837 - $556,981	-8,848 Reduced 12.73%	60,679 $2.88 Million
Q2 2020 Aug 14, 2020	BUY	$46.85 - $61.05 $1.04 Million - $1.36 Million	22,253 Added 47.07%	69,527 $4.1 Million
Q1 2020 May 14, 2020	SELL	$41.6 - $63.4 $6.42 Million - $9.79 Million	-154,438 Reduced 76.56%	47,274 $2.24 Million
Q4 2019 Feb 18, 2020	SELL	$53.85 - $65.27 $20.5 Million - $24.9 Million	-380,819 Reduced 65.37%	201,712 $12.2 Million
Q3 2019 Nov 14, 2019	BUY	$59.06 - $72.15 $16.2 Million - $19.8 Million	274,852 Added 89.33%	582,531 $34.9 Million
Q2 2019 Jul 31, 2019	BUY	$62.09 - $86.14 $13.1 Million - $18.2 Million	211,161 Added 218.78%	307,679 $19.8 Million
Q1 2019 Apr 30, 2019	BUY	$52.92 - $81.17 $4.48 Million - $6.87 Million	84,587 Added 708.97%	96,518 $7.83 Million
Q4 2018 Feb 06, 2019	BUY	$43.37 - $59.54 $517,447 - $710,371	11,931 New	11,931 $645,000
Q2 2018 Aug 10, 2018	SELL	$40.53 - $50.7 $579,579 - $725,010	-14,300 Closed	0 $0
Q1 2018 May 14, 2018	BUY	$44.08 - $55.05 $630,344 - $787,215	14,300 New	14,300 $630,000

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...

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Janus Henderson Group PLC Ionis Pharmaceuticals Inc Transaction History