Jane Street’s Ionis Pharmaceuticals IONS Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $21.7M | Buy |
288,700
+272,800
| +1,716% | +$21.5M | ﹤0.01% | 1714 |
|
|
2025
Q4 | $1.26M | Sell |
15,900
-11,300
| -42% | -$851K | ﹤0.01% | 5679 |
|
|
2025
Q3 | $1.78M | Buy |
27,200
+4,100
| +18% | +$200K | ﹤0.01% | 5157 |
|
|
2025
Q2 | $913K | Buy |
23,100
+7,000
| +43% | +$229K | ﹤0.01% | 5783 |
|
|
2025
Q1 | $486K | Sell |
16,100
-13,300
| -45% | -$436K | ﹤0.01% | 6918 |
|
|
2024
Q4 | $1.03M | Sell |
29,400
-300
| -1% | -$11.2K | ﹤0.01% | 5340 |
|
|
2024
Q3 | $1.19M | Sell |
29,700
-31,600
| -52% | -$1.47M | ﹤0.01% | 5542 |
|
|
2024
Q2 | $2.92M | Buy |
61,300
+27,600
| +82% | +$1.13M | ﹤0.01% | 3854 |
|
|
2024
Q1 | $1.46M | Buy |
33,700
+11,200
| +50% | +$534K | ﹤0.01% | 4695 |
|
|
2023
Q4 | $1.14M | Sell |
22,500
-17,300
| -43% | -$829K | ﹤0.01% | 5333 |
|
|
2023
Q3 | $1.81M | Buy |
39,800
+22,500
| +130% | +$928K | ﹤0.01% | 4225 |
|
|
2023
Q2 | $710K | Buy |
17,300
+3,200
| +23% | +$123K | ﹤0.01% | 5770 |
|
|
2023
Q1 | $504K | Sell |
14,100
-28,600
| -67% | -$1.07M | ﹤0.01% | 6304 |
|
|
2022
Q4 | $1.61M | Sell |
42,700
-48,300
| -53% | -$2.03M | ﹤0.01% | 4195 |
|
|
2022
Q3 | $4.03M | Buy |
91,000
+26,100
| +40% | +$1.1M | ﹤0.01% | 2963 |
|
|
2022
Q2 | $2.4M | Buy |
64,900
+18,400
| +40% | +$694K | ﹤0.01% | 3825 |
|
|
2022
Q1 | $1.72M | Sell |
46,500
-19,100
| -29% | -$625K | ﹤0.01% | 5043 |
|
|
2021
Q4 | $2M | Buy |
65,600
+31,900
| +95% | +$1M | ﹤0.01% | 4498 |
|
|
2021
Q3 | $1.13M | Buy |
33,700
+7,800
| +30% | +$294K | ﹤0.01% | 5671 |
|
|
2021
Q2 | $1.03M | Sell |
25,900
-10,100
| -28% | -$396K | ﹤0.01% | 5766 |
|
|
2021
Q1 | $1.62M | Sell |
36,000
-8,900
| -20% | -$496K | ﹤0.01% | 4433 |
|
|
2020
Q4 | $2.54M | Hold |
44,900
| – | – | ﹤0.01% | 3103 |
|
|
2020
Q3 | $2.13M | Sell |
44,900
-6,400
| -12% | -$356K | ﹤0.01% | 2932 |
|
|
2020
Q2 | $3.02M | Buy |
51,300
+13,200
| +35% | +$734K | ﹤0.01% | 2493 |
|
|
2020
Q1 | $1.8M | Buy |
+38,100
| New | +$2.12M | ﹤0.01% | 2130 |
|
|
2017
Q4 | – | Sell |
-4,900
| Closed | -$248K | – | 4864 |
|
|
2017
Q3 | $248K | Buy |
+4,900
| New | +$257K | ﹤0.01% | 3905 |
|
|
2017
Q1 | – | Sell |
-14,600
| Closed | -$698K | – | 4403 |
|
|
2016
Q4 | $698K | Sell |
14,600
-1,600
| -10% | -$63.3K | ﹤0.01% | 2483 |
|
|
2016
Q3 | $594K | Sell |
16,200
-144,600
| -90% | -$4.52M | ﹤0.01% | 2578 |
|
|
2016
Q2 | $3.75M | Buy |
160,800
+149,400
| +1,311% | +$4.82M | 0.02% | 786 |
|
|
2016
Q1 | $462K | Buy |
11,400
+4,100
| +56% | +$167K | ﹤0.01% | 2694 |
|
|
2015
Q4 | $452K | Buy |
+7,300
| New | +$394K | ﹤0.01% | 2603 |
|
|
2015
Q3 | – | Sell |
-12,000
| Closed | -$691K | – | 3853 |
|
|
2015
Q2 | $691K | Sell |
12,000
-2,800
| -19% | -$178K | ﹤0.01% | 1953 |
|
|
2015
Q1 | $942K | Buy |
+14,800
| New | +$1M | 0.01% | 1424 |
|
Other funds holding IONS
VPM
VCM
Jane Street's IONS Position: Q1 2026 in Review
Jane Street increased its Ionis Pharmaceuticals (IONS) stake by 530% in Q1 2026, buying an estimated $12.7M and bringing the position to 191,818 shares worth $14.4M. The position accounts for ﹤0.01% of the portfolio, ranked #2111.
Jane Street first reported a position in IONS in Q2 2013 and has held it in 47 quarters since. The position peaked at $23.9M in Q3 2025. 494 funds tracked by Wall St. Rank hold IONS as of Q1 2026.
- Jane Street held 191,818 shares of Ionis Pharmaceuticals worth $14.4M as of Q1 2026.
- Jane Street bought 161,347 Ionis Pharmaceuticals shares in Q1 2026, an estimated $12.7M.
- Ionis Pharmaceuticals made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #2111 holding.
- Jane Street first reported a position in Ionis Pharmaceuticals in Q2 2013 and has held it in 47 quarters since.
- Jane Street's Ionis Pharmaceuticals position peaked at $23.9M in Q3 2025.
- 494 funds tracked by Wall St. Rank held Ionis Pharmaceuticals as of Q1 2026.
Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.