T. Rowe Price Investment Management, Inc.

Holdings History for IONIS PHARMACEUTICALS INC - Common Stock (IONS)

Symbol: IONS on Nasdaq
Investment type: Equity - Shares of Stock
Class: Common Stock
Latest Disclosed Ownership: 15.9M shares
Security Ownership: 10%

Shares, Excluding Options vs Price

Value, Excluding Options

T. Rowe Price Investment Management, Inc. ownership in IONIS PHARMACEUTICALS INC Common Stock (IONS)

2025-02-07 - T. Rowe Price Investment Management, Inc. has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 15.9M shares of IONIS PHARMACEUTICALS INC Common Stock (IONS). This represents 10% percent ownership of the company.

Reporting Name	Ownership %	Change	Value $	Shares owned	Change	Activity %	Price	Form	Report date	Filed at
T. Rowe Price Investment Management, Inc.	10%		$530M	15.9M			$33.41	13G/A	1/31/2025	7 Feb 2025 11:55:55

Holdings date	Weight	Change	Value $	Shares	Change	Activity %	Price	All Holders
12/31/2024	0.31%	+0%	$495M	14.2M	+1,083	+0.01%	$34.96	Q4 2024
9/30/2024	0.34%	+0.04%	$568M	14.2M	+1,528,432	+12.1%	$40.06	Q3 2024
6/30/2024	0.38%	-0.02%	$602M	12.6M	-677,428	-5.09%	$47.66	Q2 2024
3/31/2024	0.35%	+0%	$577M	13.3M	+115,659	+0.88%	$43.35	Q1 2024
12/31/2023	0.43%	+0%	$668M	13.2M	+78,398	+0.6%	$50.59	Q4 2023
9/30/2023	0.42%	+0%	$595M	13.1M	+39,328	+0.3%	$45.36	Q3 2023
6/30/2023	0.37%	+0%	$537M	13.1M	+19,680	+0.15%	$41.03	Q2 2023
3/31/2023	0.33%	+0.04%	$467M	13.1M	+1,385,788	+11.9%	$35.74	Q1 2023
12/31/2022	0.34%	+0.02%	$441M	11.7M	+521,564	+4.67%	$37.77	Q4 2022
9/30/2022	0.39%		$493M	11.2M			$44.23	Q3 2022

* 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.