PEAK6
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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 		$75.1K Buy
+1,000
New +$78.9K ﹤0.01% 2413
2025
Q4 		– Sell
-20,700
Closed -$1.35M – 3080
2025
Q3 		$1.35M Buy
+20,700
New +$1.01M ﹤0.01% 1708
2025
Q1 		– Sell
-100,000
Closed -$3.5M – 3276
2024
Q4 		$3.5M Buy
+100,000
New +$3.74M 0.01% 1096

Other funds holding IONS

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return
BlackRock
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
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
State Street
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.