TCM
IONS icon

TimesSquare Capital Management’s Ionis Pharmaceuticals IONS Stock Holding History

TimesSquare Capital Management’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 		$48.7M Buy
614,070
+338,396
+123% +$25.5M 0.72% 49
2026
Q1 		$20.7M Buy
+275,674
New +$21.8M 0.35% 104

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 $3.38T AUM 44.17% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return

TimesSquare Capital Management's IONS Position: Q2 2026 in Review

TimesSquare Capital Management increased its Ionis Pharmaceuticals (IONS) stake by 123% in Q2 2026, buying an estimated $25.5M and bringing the position to 614,070 shares worth $48.7M. The position accounts for 0.72% of the portfolio, ranked #49.

TimesSquare Capital Management first reported a position in IONS in Q1 2026 and has held it in 2 quarters since. 515 funds tracked by Wall St. Rank hold IONS as of Q2 2026.

  • TimesSquare Capital Management held 614,070 shares of Ionis Pharmaceuticals worth $48.7M as of Q2 2026.
  • TimesSquare Capital Management bought 338,396 Ionis Pharmaceuticals shares in Q2 2026, an estimated $25.5M.
  • Ionis Pharmaceuticals made up 0.72% of TimesSquare Capital Management's portfolio in Q2 2026, its #49 holding.
  • TimesSquare Capital Management first reported a position in Ionis Pharmaceuticals in Q1 2026 and has held it in 2 quarters since.
  • 515 funds tracked by Wall St. Rank held Ionis Pharmaceuticals as of Q2 2026.

Based on TimesSquare Capital Management's 13F filing for Q2 2026, filed 7 Aug 2026.