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
Q2
$39.9M Buy
503,647
+311,829
+163% +$23.5M ﹤0.01% 1590
2026
Q1
$14.4M Buy
191,818
+161,347
+530% +$12.7M ﹤0.01% 2111
2025
Q4
$2.41M Sell
30,471
-334,599
-92% -$25.2M ﹤0.01% 4448
2025
Q3
$23.9M Buy
+365,070
New +$17.8M ﹤0.01% 1483
2025
Q2
Sell
-54,117
Closed -$1.77M 10228
2025
Q1
$1.63M Sell
54,117
-110,517
-67% -$3.62M ﹤0.01% 4691
2024
Q4
$5.76M Sell
164,634
-11,926
-7% -$446K ﹤0.01% 2486
2024
Q3
$7.07M Sell
176,560
-2,686
-1% -$125K ﹤0.01% 2340
2024
Q2
$8.54M Buy
179,246
+61,114
+52% +$2.51M ﹤0.01% 2225
2024
Q1
$5.12M Sell
118,132
-36,032
-23% -$1.72M ﹤0.01% 2581
2023
Q4
$7.8M Sell
154,164
-99,327
-39% -$4.76M ﹤0.01% 2261
2023
Q3
$11.5M Buy
253,491
+145,167
+134% +$5.99M ﹤0.01% 1633
2023
Q2
$4.44M Buy
108,324
+4,423
+4% +$170K ﹤0.01% 2919
2023
Q1
$3.71M Buy
103,901
+92,421
+805% +$3.47M ﹤0.01% 2847
2022
Q4
$434K Sell
11,480
-9,149
-44% -$385K ﹤0.01% 6383
2022
Q3
$913K Sell
20,629
-70,260
-77% -$2.96M ﹤0.01% 5567
2022
Q2
$3.36M Buy
90,889
+63,098
+227% +$2.38M ﹤0.01% 3259
2022
Q1
$1.03M Sell
27,791
-24,759
-47% -$810K ﹤0.01% 6080
2021
Q4
$1.6M Sell
52,550
-11,926
-18% -$375K ﹤0.01% 4934
2021
Q3
$2.16M Buy
64,476
+18,059
+39% +$680K ﹤0.01% 4317
2021
Q2
$1.85M Buy
46,417
+13,554
+41% +$531K ﹤0.01% 4476
2021
Q1
$1.48M Sell
32,863
-47,779
-59% -$2.66M ﹤0.01% 4644
2020
Q4
$4.56M Buy
80,642
+1,526
+2% +$76K ﹤0.01% 2249
2020
Q3
$3.75M Buy
79,116
+48,190
+156% +$2.68M ﹤0.01% 2181
2020
Q2
$1.82M Buy
30,926
+22,450
+265% +$1.25M ﹤0.01% 3194
2020
Q1
$401K Sell
8,476
-34,617
-80% -$1.93M ﹤0.01% 3888
2019
Q4
$2.6M Buy
43,093
+39,343
+1,049% +$2.34M ﹤0.01% 1654
2019
Q3
$225K Sell
3,750
-6,257
-63% -$408K ﹤0.01% 4514
2019
Q2
$643K Buy
10,007
+925
+10% +$65.4K ﹤0.01% 3264
2019
Q1
$737K Sell
9,082
-26,846
-75% -$1.73M ﹤0.01% 3188
2018
Q4
$1.94M Sell
35,928
-5,998
-14% -$306K ﹤0.01% 1766
2018
Q3
$2.16M Buy
+41,926
New +$1.97M ﹤0.01% 1816
2018
Q2
Sell
-19,143
Closed -$844K 5271
2018
Q1
$844K Buy
19,143
+8,689
+83% +$441K ﹤0.01% 2885
2017
Q4
$526K Buy
+10,454
New +$573K ﹤0.01% 3110
2017
Q3
Sell
-4,465
Closed -$234K 4747
2017
Q2
$227K Sell
4,465
-17,940
-80% -$835K ﹤0.01% 3904
2017
Q1
$901K Buy
22,405
+7,539
+51% +$339K ﹤0.01% 2175
2016
Q4
$711K Buy
14,866
+7,116
+92% +$282K ﹤0.01% 2469
2016
Q3
$284K Sell
7,750
-42,653
-85% -$1.33M ﹤0.01% 3364
2016
Q2
$1.17M Buy
50,403
+32,613
+183% +$1.05M 0.01% 1814
2016
Q1
$720K Sell
17,790
-21,998
-55% -$894K ﹤0.01% 2197
2015
Q4
$2.46M Buy
+39,788
New +$2.15M 0.02% 900
2015
Q3
Sell
-194,706
Closed -$11.2M 3854
2015
Q2
$11.2M Buy
194,706
+160,215
+465% +$10.2M 0.07% 212
2015
Q1
$2.2M Buy
34,491
+17,818
+107% +$1.21M 0.02% 803
2014
Q4
$1.03M Buy
16,673
+9,247
+125% +$456K 0.01% 1009
2014
Q3
$288K Buy
+7,426
New +$263K ﹤0.01% 1920
2014
Q2
Sell
-14,726
Closed -$636K 2837
2014
Q1
$636K Buy
14,726
+5,205
+55% +$252K 0.01% 1348
2013
Q4
$379K Sell
9,521
-4,017
-30% -$143K 0.01% 1452
2013
Q3
$508K Sell
13,538
-64,346
-83% -$1.92M 0.01% 1690
2013
Q2
$2.09M Buy
+77,884
New +$1.66M 0.04% 447

Other funds holding IONS

Jane Street's IONS Position: Q2 2026 in Review

Jane Street increased its Ionis Pharmaceuticals (IONS) stake by 163% in Q2 2026, buying an estimated $23.5M and bringing the position to 503,647 shares worth $39.9M. The position accounts for ﹤0.01% of the portfolio, ranked #1590.

Jane Street first reported a position in IONS in Q2 2013 and has held it in 48 quarters since. 477 funds tracked by Wall St. Rank hold IONS as of Q2 2026.

  • Jane Street held 503,647 shares of Ionis Pharmaceuticals worth $39.9M as of Q2 2026.
  • Jane Street bought 311,829 Ionis Pharmaceuticals shares in Q2 2026, an estimated $23.5M.
  • Ionis Pharmaceuticals made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #1590 holding.
  • Jane Street first reported a position in Ionis Pharmaceuticals in Q2 2013 and has held it in 48 quarters since.
  • 477 funds tracked by Wall St. Rank held Ionis Pharmaceuticals as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.