PDT Partners’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 | – | Sell |
-54,365
| Closed | -$4.3M | – | 570 |
|
|
2025
Q4 | $4.3M | Hold |
54,365
| – | – | 0.28% | 127 |
|
|
2025
Q3 | $3.56M | Hold |
54,365
| – | – | 0.22% | 158 |
|
|
2025
Q2 | $2.15M | Sell |
54,365
-41,691
| -43% | -$1.36M | 0.12% | 284 |
|
|
2025
Q1 | $2.9M | Buy |
96,056
+67,062
| +231% | +$2.2M | 0.21% | 171 |
|
|
2024
Q4 | $1.01M | Buy |
28,994
+15,594
| +116% | +$583K | 0.09% | 335 |
|
|
2024
Q3 | $537K | Sell |
13,400
-30
| -0.2% | -$1.4K | 0.05% | 490 |
|
|
2024
Q2 | $640K | Buy |
+13,430
| New | +$551K | 0.06% | 422 |
|
|
2023
Q4 | – | Sell |
-19,537
| Closed | -$886K | – | 600 |
|
|
2023
Q3 | $886K | Buy |
19,537
+1,039
| +6% | +$42.9K | 0.11% | 313 |
|
|
2023
Q2 | $759K | Buy |
+18,498
| New | +$711K | 0.1% | 310 |
|
|
2022
Q3 | – | Sell |
-59,865
| Closed | -$2.22M | – | 954 |
|
|
2022
Q2 | $2.22M | Sell |
59,865
-20,205
| -25% | -$762K | 0.2% | 149 |
|
|
2022
Q1 | $2.97M | Buy |
80,070
+12,373
| +18% | +$405K | 0.26% | 97 |
|
|
2021
Q4 | $2.06M | Buy |
+67,697
| New | +$2.13M | 0.16% | 228 |
|
|
2021
Q3 | – | Sell |
-141,925
| Closed | -$5.66M | – | 835 |
|
|
2021
Q2 | $5.66M | Buy |
+141,925
| New | +$5.56M | 0.37% | 40 |
|
|
2021
Q1 | – | Sell |
-112,045
| Closed | -$6.33M | – | 825 |
|
|
2020
Q4 | $6.33M | Sell |
112,045
-9,537
| -8% | -$475K | 0.43% | 43 |
|
|
2020
Q3 | $5.77M | Buy |
121,582
+5,282
| +5% | +$293K | 0.38% | 104 |
|
|
2020
Q2 | $6.86M | Buy |
+116,300
| New | +$6.47M | 0.47% | 76 |
|
|
2019
Q2 | – | Sell |
-341,800
| Closed | -$27.7M | – | 434 |
|
|
2019
Q1 | $27.7M | Sell |
341,800
-49,500
| -13% | -$3.19M | 1.57% | 7 |
|
|
2018
Q4 | $21.2M | Sell |
391,300
-37
| -0% | -$1.89K | 1.18% | 13 |
|
|
2018
Q3 | $20.2M | Buy |
391,337
+37
| +0% | +$1.74K | 0.84% | 29 |
|
|
2018
Q2 | $16.3M | Buy |
391,300
+30,100
| +8% | +$1.33M | 0.62% | 44 |
|
|
2018
Q1 | $15.9M | Sell |
361,200
-45,161
| -11% | -$2.29M | 0.54% | 52 |
|
|
2017
Q4 | $20.4M | Sell |
406,361
-18,549
| -4% | -$1.02M | 0.59% | 50 |
|
|
2017
Q3 | $21.5M | Buy |
+424,910
| New | +$22.3M | 0.71% | 47 |
|
|
2015
Q4 | – | Sell |
-27,303
| Closed | -$1.1M | – | 668 |
|
|
2015
Q3 | $1.1M | Sell |
27,303
-84,607
| -76% | -$4.38M | 0.02% | 687 |
|
|
2015
Q2 | $6.44M | Buy |
+111,910
| New | +$7.12M | 0.17% | 141 |
|
|
2014
Q3 | – | Sell |
-155,125
| Closed | -$5.34M | – | 1437 |
|
|
2014
Q2 | $5.34M | Buy |
+155,125
| New | +$4.88M | 0.14% | 174 |
|
|
2014
Q1 | – | Sell |
-6,084
| Closed | -$242K | – | 1327 |
|
|
2013
Q4 | $242K | Sell |
6,084
-71,088
| -92% | -$2.53M | 0.03% | 561 |
|
|
2013
Q3 | $2.9M | Buy |
77,172
+25,316
| +49% | +$756K | 0.08% | 346 |
|
|
2013
Q2 | $1.39M | Buy |
+51,856
| New | +$1.1M | 0.03% | 688 |
|
Other funds holding IONS
VPM
VCM
PDT Partners's IONS Position: Q1 2026 in Review
PDT Partners sold out of Ionis Pharmaceuticals (IONS) in Q1 2026, closing a stake of 54,365 shares — an estimated $4.3M sold.
PDT Partners first reported a position in IONS in Q2 2013 and held it in 29 quarters. The position peaked at $27.7M in Q1 2019. 494 funds tracked by Wall St. Rank hold IONS as of Q1 2026.
- PDT Partners reported no remaining Ionis Pharmaceuticals position as of Q1 2026 after selling out during the quarter.
- PDT Partners sold 54,365 Ionis Pharmaceuticals shares in Q1 2026, an estimated $4.3M.
- PDT Partners first reported a position in Ionis Pharmaceuticals in Q2 2013 and held it in 29 quarters.
- PDT Partners's Ionis Pharmaceuticals position peaked at $27.7M in Q1 2019.
- 494 funds tracked by Wall St. Rank held Ionis Pharmaceuticals as of Q1 2026.
Based on PDT Partners's 13F filing for Q1 2026, filed 15 May 2026.