Twin Tree Management
IONS icon

Twin Tree Management’s Ionis Pharmaceuticals IONS Stock Holding History

Twin Tree 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
2025
Q1 		– Sell
-94,600
Closed -$3.31M – 1730
2024
Q4 		$3.31M Sell
94,600
-1,000
-1% -$37.4K 0.01% 1043
2024
Q3 		$3.83M Buy
+95,600
New +$4.45M 0.01% 979
2024
Q2 		– Sell
-5,200
Closed -$225K – 1492
2024
Q1 		$225K Sell
5,200
-15,800
-75% -$753K ﹤0.01% 1143
2023
Q4 		$1.06M Sell
21,000
-39,800
-65% -$1.91M ﹤0.01% 1132
2023
Q3 		$2.76M Buy
60,800
+54,400
+850% +$2.24M 0.01% 809
2023
Q2 		$263K Buy
+6,400
New +$246K ﹤0.01% 1098
2019
Q2 		– Sell
-23,600
Closed -$1.92M – 1396
2019
Q1 		$1.92M Sell
23,600
-111,800
-83% -$7.21M 0.01% 684
2018
Q4 		$7.32M Sell
135,400
-22,500
-14% -$1.15M 0.05% 401
2018
Q3 		$8.14M Sell
157,900
-31,200
-16% -$1.47M 0.06% 290
2018
Q2 		$7.88M Sell
189,100
-44,000
-19% -$1.95M 0.05% 317
2018
Q1 		$10.3M Buy
233,100
+7,800
+3% +$396K 0.08% 204
2017
Q4 		$11.3M Buy
225,300
+78,300
+53% +$4.29M 0.08% 211
2017
Q3 		$7.45M Buy
+147,000
New +$7.7M 0.06% 291
2015
Q3 		– Sell
-4,400
Closed -$253K – 1405
2015
Q2 		$253K Sell
4,400
-8,900
-67% -$566K 0.01% 1025
2015
Q1 		$847K Sell
13,300
-2,100
-14% -$142K 0.02% 647
2014
Q4 		$951K Buy
+15,400
New +$760K 0.03% 605

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

Twin Tree Management's IONS Position: Q1 2026 in Review

Twin Tree Management sold out of Ionis Pharmaceuticals (IONS) in Q1 2026, closing a stake of 32,476 shares — an estimated $2.57M sold.

Twin Tree Management first reported a position in IONS in Q2 2015 and held it in 18 quarters. The position peaked at $3.11M in Q4 2024. 493 funds tracked by Wall St. Rank hold IONS as of Q1 2026.

  • Twin Tree Management reported no remaining Ionis Pharmaceuticals position as of Q1 2026 after selling out during the quarter.
  • Twin Tree Management sold 32,476 Ionis Pharmaceuticals shares in Q1 2026, an estimated $2.57M.
  • Twin Tree Management first reported a position in Ionis Pharmaceuticals in Q2 2015 and held it in 18 quarters.
  • Twin Tree Management's Ionis Pharmaceuticals position peaked at $3.11M in Q4 2024.
  • 493 funds tracked by Wall St. Rank held Ionis Pharmaceuticals as of Q1 2026.

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