PEAK6’s Ionis Pharmaceuticals IONS Stock Holding History

PEAK6’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	$1.52M	Buy	+20,300	New	+$1.6M	﹤0.01%	1515

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

PEAK6's IONS Position: Q1 2026 in Review

PEAK6 increased its Ionis Pharmaceuticals (IONS) stake by 12% in Q1 2026, buying an estimated $298K and bringing the position to 34,419 shares worth $2.58M. The position accounts for 0.01% of the portfolio, ranked #1247.

PEAK6 first reported a position in IONS in Q3 2025 and has held it in 3 quarters since. 493 funds tracked by Wall St. Rank hold IONS as of Q1 2026.

PEAK6 held 34,419 shares of Ionis Pharmaceuticals worth $2.58M as of Q1 2026.
PEAK6 bought 3,777 Ionis Pharmaceuticals shares in Q1 2026, an estimated $298K.
Ionis Pharmaceuticals made up 0.01% of PEAK6's portfolio in Q1 2026, its #1247 holding.
PEAK6 first reported a position in Ionis Pharmaceuticals in Q3 2025 and has held it in 3 quarters since.
493 funds tracked by Wall St. Rank held Ionis Pharmaceuticals as of Q1 2026.

Based on PEAK6's 13F filing for Q1 2026, filed 14 May 2026.