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Dmitry Balyasny’s Ionis Pharmaceuticals IONS Stock Holding History

Dmitry Balyasny’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 		– Sell
-120,577
Closed -$9.54M – 3190
2025
Q4 		$9.54M Sell
120,577
-639,534
-84% -$48.2M 0.01% 1052
2025
Q3 		$49.7M Sell
760,111
-8,537
-1% -$417K 0.06% 366
2025
Q2 		$30.4M Buy
+768,648
New +$25.2M 0.05% 512
2024
Q3 		– Sell
-1,077,321
Closed -$51.3M – 2940
2024
Q2 		$51.3M Buy
+1,077,321
New +$44.2M 0.09% 283
2023
Q3 		– Sell
-125,850
Closed -$5.16M – 2487
2023
Q2 		$5.16M Sell
125,850
-77,616
-38% -$2.98M 0.01% 1044
2023
Q1 		$7.27M Buy
+203,466
New +$7.64M 0.02% 918
2022
Q3 		– Sell
-155,533
Closed -$5.76M – 3033
2022
Q2 		$5.76M Buy
+155,533
New +$5.86M 0.02% 879
2022
Q1 		– Sell
-193,120
Closed -$5.88M – 2645
2021
Q4 		$5.88M Buy
193,120
+51,105
+36% +$1.61M 0.02% 800
2021
Q3 		$4.76M Sell
142,015
-121,271
-46% -$4.57M 0.02% 840
2021
Q2 		$10.5M Buy
+263,286
New +$10.3M 0.05% 503
2021
Q1 		– Sell
-44,848
Closed -$2.54M – 1913
2020
Q4 		$2.54M Buy
+44,848
New +$2.23M 0.01% 823
2019
Q4 		– Sell
-253,265
Closed -$15.2M – 1322
2019
Q3 		$15.2M Buy
+253,265
New +$16.5M 0.1% 291
2018
Q1 		– Sell
-12,500
Closed -$629K – 2110
2017
Q4 		$629K Buy
12,500
+7,400
+145% +$406K ﹤0.01% 1480
2017
Q3 		$259K Sell
5,100
-8,700
-63% -$456K ﹤0.01% 1592
2017
Q2 		$702K Buy
+13,800
New +$643K ﹤0.01% 1179
2016
Q1 		– Sell
-185,954
Closed -$11.5M – 1388
2015
Q4 		$11.5M Buy
+185,954
New +$10M 0.08% 330

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
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Dmitry Balyasny's IONS Position: Q1 2026 in Review

Dmitry Balyasny sold out of Ionis Pharmaceuticals (IONS) in Q1 2026, closing a stake of 120,577 shares — an estimated $9.54M sold.

Dmitry Balyasny first reported a position in IONS in Q4 2015 and held it in 16 quarters. The position peaked at $51.3M in Q2 2024. 494 funds tracked by Wall St. Rank hold IONS as of Q1 2026.

  • Dmitry Balyasny reported no remaining Ionis Pharmaceuticals position as of Q1 2026 after selling out during the quarter.
  • Dmitry Balyasny sold 120,577 Ionis Pharmaceuticals shares in Q1 2026, an estimated $9.54M.
  • Dmitry Balyasny first reported a position in Ionis Pharmaceuticals in Q4 2015 and held it in 16 quarters.
  • Dmitry Balyasny's Ionis Pharmaceuticals position peaked at $51.3M in Q2 2024.
  • 494 funds tracked by Wall St. Rank held Ionis Pharmaceuticals as of Q1 2026.

Based on Balyasny Asset Management's 13F filing for Q1 2026, filed 15 May 2026.