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Legato Capital Management’s Ionis Pharmaceuticals IONS Stock Holding History

Legato 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
Q1 		$1.49M Buy
19,840
+13,685
+222% +$1.08M 0.14% 207
2025
Q4 		$487K Sell
6,155
-11,145
-64% -$839K 0.04% 552
2025
Q3 		$1.13M Buy
+17,300
New +$845K 0.12% 257
2024
Q1 		– Sell
-5,455
Closed -$276K – 593
2023
Q4 		$276K Buy
+5,455
New +$261K 0.04% 502

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

Legato Capital Management's IONS Position: Q1 2026 in Review

Legato Capital Management increased its Ionis Pharmaceuticals (IONS) stake by 222% in Q1 2026, buying an estimated $1.08M and bringing the position to 19,840 shares worth $1.49M. The position accounts for 0.14% of the portfolio, ranked #207.

Legato Capital Management first reported a position in IONS in Q4 2023 and has held it in 4 quarters since. 493 funds tracked by Wall St. Rank hold IONS as of Q1 2026.

  • Legato Capital Management held 19,840 shares of Ionis Pharmaceuticals worth $1.49M as of Q1 2026.
  • Legato Capital Management bought 13,685 Ionis Pharmaceuticals shares in Q1 2026, an estimated $1.08M.
  • Ionis Pharmaceuticals made up 0.14% of Legato Capital Management's portfolio in Q1 2026, its #207 holding.
  • Legato Capital Management first reported a position in Ionis Pharmaceuticals in Q4 2023 and has held it in 4 quarters since.
  • 493 funds tracked by Wall St. Rank held Ionis Pharmaceuticals as of Q1 2026.

Based on Legato Capital Management's 13F filing for Q1 2026, filed 14 May 2026.