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Aaron Cowen’s Ionis Pharmaceuticals IONS Stock Holding History

Aaron Cowen’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
Q2 		$856K Hold
10,800
– – 0.02% 87
2026
Q1 		$811K Hold
10,800
– – 0.02% 80
2025
Q4 		$854K Hold
10,800
– – 0.02% 84
2025
Q3 		$707K Hold
10,800
– – 0.02% 86
2025
Q2 		$427K Hold
10,800
– – 0.01% 91
2025
Q1 		$326K Hold
10,800
– – 0.01% 98
2024
Q4 		$378K Hold
10,800
– – 0.01% 91
2024
Q3 		$433K Hold
10,800
– – 0.01% 93
2024
Q2 		$515K Hold
10,800
– – 0.02% 89
2024
Q1 		$468K Buy
+10,800
New +$515K 0.02% 96

Other funds holding IONS

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return
Royal Bank of Canada
Royal Bank of Canada Toronto, Ontario, Canada $672B AUM 33.48% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return

Aaron Cowen's IONS Position: Q2 2026 in Review

Aaron Cowen held its Ionis Pharmaceuticals (IONS) position steady in Q2 2026 at 10,800 shares worth $856K. The position accounts for 0.02% of the portfolio, ranked #87.

Aaron Cowen first reported a position in IONS in Q1 2024 and has held it in 10 quarters since. 510 funds tracked by Wall St. Rank hold IONS as of Q2 2026.

  • Aaron Cowen held 10,800 shares of Ionis Pharmaceuticals worth $856K as of Q2 2026.
  • Aaron Cowen left its Ionis Pharmaceuticals share count unchanged in Q2 2026.
  • Ionis Pharmaceuticals made up 0.02% of Aaron Cowen's portfolio in Q2 2026, its #87 holding.
  • Aaron Cowen first reported a position in Ionis Pharmaceuticals in Q1 2024 and has held it in 10 quarters since.
  • 510 funds tracked by Wall St. Rank held Ionis Pharmaceuticals as of Q2 2026.

Based on Suvretta Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.