ADAR1 Capital Management’s Ionis Pharmaceuticals IONS Stock Holding History

ADAR1 Capital Management’s Portfolio IONS Stock Details IONS Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$12M	Buy	160,338 +13,208	+9%	+$1.04M	0.71%	39
2025 Q4	$11.6M	Buy	147,130 +13,312	+10%	+$1M	0.85%	30
2025 Q3	$8.75M	Sell	133,818 -14,643	-10%	-$715K	0.82%	28
2025 Q2	$5.87M	Buy	+148,461	New	+$4.86M	0.9%	30
2024 Q4	–	Sell	-700	Closed	-$28K	–	257
2024 Q3	$28K	Sell	700 -800	-53%	-$37.2K	﹤0.01%	236
2024 Q2	$71.5K	Sell	1,500 -1,400	-48%	-$57.4K	0.01%	182
2024 Q1	$126K	Buy	+2,900	New	+$138K	0.03%	138

Other funds holding IONS

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return

Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

ADAR1 Capital Management's IONS Position: Q1 2026 in Review

ADAR1 Capital Management increased its Ionis Pharmaceuticals (IONS) stake by 9% in Q1 2026, buying an estimated $1.04M and bringing the position to 160,338 shares worth $12M. The position accounts for 0.71% of the portfolio, ranked #39.

ADAR1 Capital Management first reported a position in IONS in Q1 2024 and has held it in 7 quarters since. 493 funds tracked by Wall St. Rank hold IONS as of Q1 2026.

ADAR1 Capital Management held 160,338 shares of Ionis Pharmaceuticals worth $12M as of Q1 2026.
ADAR1 Capital Management bought 13,208 Ionis Pharmaceuticals shares in Q1 2026, an estimated $1.04M.
Ionis Pharmaceuticals made up 0.71% of ADAR1 Capital Management's portfolio in Q1 2026, its #39 holding.
ADAR1 Capital Management first reported a position in Ionis Pharmaceuticals in Q1 2024 and has held it in 7 quarters since.
493 funds tracked by Wall St. Rank held Ionis Pharmaceuticals as of Q1 2026.

Based on ADAR1 Capital Management's 13F filing for Q1 2026, filed 18 May 2026.