Ikarian Capital’s Ionis Pharmaceuticals IONS Stock Holding History

Ikarian Capital’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	$8.42M	Buy	112,100 +17,500	+18%	+$1.38M	0.68%	40
2025 Q4	$7.48M	Buy	94,600 +81,300	+611%	+$6.12M	0.58%	50
2025 Q3	$870K	Buy	+13,300	New	+$649K	0.09%	122
2021 Q2	–	Sell	-90,000	Closed	-$4.05M	–	246
2021 Q1	$4.05M	Sell	90,000 -200,000	-69%	-$11.2M	0.14%	139
2020 Q4	$16.4M	Buy	+290,000	New	+$14.5M	0.72%	33

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

Ikarian Capital's IONS Position: Q1 2026 in Review

Ikarian Capital reduced its Ionis Pharmaceuticals (IONS) stake by 37% in Q1 2026, selling an estimated $5.92M and leaving 127,038 shares worth $9.54M. The position accounts for 0.77% of the portfolio, ranked #35.

Ikarian Capital first reported a position in IONS in Q3 2025 and has held it in 3 quarters since. The position peaked at $27.2M in Q3 2025. 493 funds tracked by Wall St. Rank hold IONS as of Q1 2026.

Ikarian Capital held 127,038 shares of Ionis Pharmaceuticals worth $9.54M as of Q1 2026.
Ikarian Capital sold 75,000 Ionis Pharmaceuticals shares in Q1 2026, an estimated $5.92M.
Ionis Pharmaceuticals made up 0.77% of Ikarian Capital's portfolio in Q1 2026, its #35 holding.
Ikarian Capital first reported a position in Ionis Pharmaceuticals in Q3 2025 and has held it in 3 quarters since.
Ikarian Capital's Ionis Pharmaceuticals position peaked at $27.2M in Q3 2025.
493 funds tracked by Wall St. Rank held Ionis Pharmaceuticals as of Q1 2026.

Based on Ikarian Capital's 13F filing for Q1 2026, filed 15 May 2026.