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BVF Inc’s Ionis Pharmaceuticals IONS Stock Holding History

BVF Inc’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
Q3 		– Sell
-1,913,385
Closed -$75.6M – 47
2025
Q2 		$75.6M Hold
1,913,385
– – 2.7% 8
2025
Q1 		$57.7M Buy
+1,913,385
New +$62.7M 2.35% 9
2024
Q4 		– Sell
-1,451,879
Closed -$58.2M – 56
2024
Q3 		$58.2M Sell
1,451,879
-1,734,497
-54% -$80.7M 1.7% 17
2024
Q2 		$152M Buy
3,186,376
+757,763
+31% +$31.1M 4.26% 4
2024
Q1 		$105M Hold
2,428,613
– – 2.89% 9
2023
Q4 		$123M Sell
2,428,613
-1,576,000
-39% -$75.5M 3.07% 8
2023
Q3 		$182M Buy
4,004,613
+1,158,598
+41% +$47.8M 4.9% 2
2023
Q2 		$117M Buy
2,846,015
+285,254
+11% +$11M 3.25% 5
2023
Q1 		$91.5M Buy
2,560,761
+1,438,952
+128% +$54M 3.35% 5
2022
Q4 		$42.4M Sell
1,121,809
-1,751,144
-61% -$73.7M 1.79% 21
2022
Q3 		$127M Buy
2,872,953
+1,596,379
+125% +$67.3M 5.25% 2
2022
Q2 		$47.3M Buy
+1,276,574
New +$48.1M 2.28% 16
2021
Q2 		– Sell
-1,364,461
Closed -$61.3M – 73
2021
Q1 		$61.3M Hold
1,364,461
– – 2.3% 13
2020
Q4 		$77.1M Buy
1,364,461
+629,406
+86% +$31.4M 3.04% 10
2020
Q3 		$34.9M Sell
735,055
-687,787
-48% -$38.2M 1.9% 23
2020
Q2 		$83.9M Sell
1,422,842
-521,675
-27% -$29M 5.17% 4
2020
Q1 		$91.9M Sell
1,944,517
-235,218
-11% -$13.1M 8.57% 2
2019
Q4 		$132M Buy
2,179,735
+1,244,187
+133% +$74.1M 9.98% 1
2019
Q3 		$56M Buy
+935,548
New +$61M 5.89% 3
2019
Q1 		– Sell
-9,399
Closed -$508K – 54
2018
Q4 		$508K Sell
9,399
-510,601
-98% -$26M 0.07% 55
2018
Q3 		$26.8M Sell
520,000
-50,000
-9% -$2.35M 2.36% 15
2018
Q2 		$23.8M Buy
+570,000
New +$25.3M 2.32% 16
2016
Q3 		– Sell
-850,000
Closed -$19.8M – 30
2016
Q2 		$19.8M Buy
+850,000
New +$27.4M 4.22% 8

Other funds holding IONS

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 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
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
BG
Bellevue Group Kuesnacht, Switzerland $4.2B AUM 54.85% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
DTC
Deep Track Capital Greenwich, Connecticut $6.12B AUM 144% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

BVF Inc's IONS Position: Q3 2025 in Review

BVF Inc sold out of Ionis Pharmaceuticals (IONS) in Q3 2025, closing a stake of 1,913,385 shares — an estimated $75.6M sold.

BVF Inc first reported a position in IONS in Q2 2016 and held it in 23 quarters. The position peaked at $182M in Q3 2023. 435 funds tracked by Wall St. Rank hold IONS as of Q3 2025.

  • BVF Inc reported no remaining Ionis Pharmaceuticals position as of Q3 2025 after selling out during the quarter.
  • BVF Inc sold 1,913,385 Ionis Pharmaceuticals shares in Q3 2025, an estimated $75.6M.
  • BVF Inc first reported a position in Ionis Pharmaceuticals in Q2 2016 and held it in 23 quarters.
  • BVF Inc's Ionis Pharmaceuticals position peaked at $182M in Q3 2023.
  • 435 funds tracked by Wall St. Rank held Ionis Pharmaceuticals as of Q3 2025.

Based on BVF Inc's 13F filing for Q3 2025, filed 14 Nov 2025.