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
Q2 		$79.3K Hold
1,000
– – ﹤0.01% 2431
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 $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

PEAK6's IONS Position: Q2 2026 in Review

PEAK6 reduced its Ionis Pharmaceuticals (IONS) stake by 14% in Q2 2026, selling an estimated $373K and leaving 29,460 shares worth $2.34M. The position accounts for ﹤0.01% of the portfolio, ranked #1250.

PEAK6 first reported a position in IONS in Q3 2025 and has held it in 4 quarters since. The position peaked at $2.58M in Q1 2026. 514 funds tracked by Wall St. Rank hold IONS as of Q2 2026.

  • PEAK6 held 29,460 shares of Ionis Pharmaceuticals worth $2.34M as of Q2 2026.
  • PEAK6 sold 4,959 Ionis Pharmaceuticals shares in Q2 2026, an estimated $373K.
  • Ionis Pharmaceuticals made up ﹤0.01% of PEAK6's portfolio in Q2 2026, its #1250 holding.
  • PEAK6 first reported a position in Ionis Pharmaceuticals in Q3 2025 and has held it in 4 quarters since.
  • PEAK6's Ionis Pharmaceuticals position peaked at $2.58M in Q1 2026.
  • 514 funds tracked by Wall St. Rank held Ionis Pharmaceuticals as of Q2 2026.

Based on PEAK6's 13F filing for Q2 2026, filed 13 Aug 2026.