Group One Trading’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
$2.25M Sell
29,900
-33,300
-53% -$2.63M ﹤0.01% 1966
2025
Q4
$5M Buy
63,200
+4,400
+7% +$331K 0.01% 1489
2025
Q3
$3.85M Buy
58,800
+15,100
+35% +$737K 0.01% 1725
2025
Q2
$1.73M Buy
43,700
+12,500
+40% +$409K ﹤0.01% 2274
2025
Q1
$941K Buy
31,200
+1,200
+4% +$39.3K ﹤0.01% 2514
2024
Q4
$1.05M Sell
30,000
-31,400
-51% -$1.17M ﹤0.01% 2537
2024
Q3
$2.46M Buy
61,400
+31,300
+104% +$1.46M 0.01% 1561
2024
Q2
$1.43M Buy
30,100
+4,700
+19% +$193K 0.01% 1714
2024
Q1
$1.1M Buy
25,400
+23,300
+1,110% +$1.11M ﹤0.01% 2006
2023
Q4
$106K Sell
2,100
-1,300
-38% -$62.3K ﹤0.01% 4419
2023
Q3
$154K Sell
3,400
-7,800
-70% -$322K ﹤0.01% 4044
2023
Q2
$460K Sell
11,200
-2,100
-16% -$80.7K ﹤0.01% 3113
2023
Q1
$475K Buy
13,300
+5,600
+73% +$210K ﹤0.01% 2818
2022
Q4
$291K Sell
7,700
-11,500
-60% -$484K ﹤0.01% 3523
2022
Q3
$849K Sell
19,200
-7,400
-28% -$312K ﹤0.01% 2739
2022
Q2
$985K Buy
26,600
+23,600
+787% +$890K ﹤0.01% 2766
2022
Q1
$111K Sell
3,000
-36,800
-92% -$1.2M ﹤0.01% 5394
2021
Q4
$1.21M Sell
39,800
-15,800
-28% -$497K ﹤0.01% 3152
2021
Q3
$1.86M Buy
55,600
+18,900
+51% +$712K ﹤0.01% 2726
2021
Q2
$1.46M Sell
36,700
-20,300
-36% -$795K ﹤0.01% 2968
2021
Q1
$2.56M Sell
57,000
-61,600
-52% -$3.44M ﹤0.01% 2188
2020
Q4
$6.71M Buy
118,600
+71,900
+154% +$3.58M 0.01% 1079
2020
Q3
$2.22M Buy
46,700
+1,300
+3% +$72.2K 0.01% 1514
2020
Q2
$2.68M Sell
45,400
-2,900
-6% -$161K 0.01% 1257
2020
Q1
$2.28M Sell
48,300
-80,300
-62% -$4.48M 0.02% 952
2019
Q4
$7.77M Sell
128,600
-21,400
-14% -$1.28M 0.05% 457
2019
Q3
$8.99M Buy
150,000
+79,500
+113% +$5.18M 0.07% 315
2019
Q2
$4.53M Buy
70,500
+34,000
+93% +$2.4M 0.04% 580
2019
Q1
$2.96M Sell
36,500
-81,000
-69% -$5.23M 0.03% 691
2018
Q4
$6.35M Sell
117,500
-12,700
-10% -$648K 0.06% 410
2018
Q3
$6.72M Buy
130,200
+54,900
+73% +$2.58M 0.05% 436
2018
Q2
$3.14M Sell
75,300
-22,900
-23% -$1.02M 0.03% 806
2018
Q1
$4.33M Sell
98,200
-3,300
-3% -$168K 0.04% 543
2017
Q4
$5.11M Sell
101,500
-8,400
-8% -$461K 0.04% 631
2017
Q3
$5.57M Buy
109,900
+21,300
+24% +$1.12M 0.05% 465
2017
Q2
$4.51M Sell
88,600
-4,800
-5% -$224K 0.05% 499
2017
Q1
$3.75M Sell
93,400
-65,800
-41% -$2.96M 0.04% 526
2016
Q4
$7.62M Sell
159,200
-37,800
-19% -$1.5M 0.07% 294
2016
Q3
$7.22M Buy
197,000
+144,900
+278% +$4.53M 0.08% 281
2016
Q2
$1.21M Buy
52,100
+1,500
+3% +$48.4K 0.01% 1135
2016
Q1
$2.05M Sell
50,600
-80,700
-61% -$3.28M 0.03% 756
2015
Q4
$8.13M Sell
131,300
-15,100
-10% -$815K 0.1% 208
2015
Q3
$5.92M Sell
146,400
-41,000
-22% -$2.12M 0.08% 292
2015
Q2
$10.8M Sell
187,400
-71,600
-28% -$4.55M 0.15% 127
2015
Q1
$16.5M Sell
259,000
-26,300
-9% -$1.78M 0.26% 56
2014
Q4
$17.6M Buy
285,300
+106,700
+60% +$5.27M 0.27% 58
2014
Q3
$6.93M Sell
178,600
-13,300
-7% -$471K 0.11% 198
2014
Q2
$6.61M Buy
191,900
+58,500
+44% +$1.84M 0.1% 207
2014
Q1
$5.76M Buy
133,400
+9,200
+7% +$446K 0.1% 190
2013
Q4
$4.95M Buy
124,200
+100
+0.1% +$3.56K 0.07% 260
2013
Q3
$4.66M Buy
124,100
+40,300
+48% +$1.2M 0.09% 229
2013
Q2
$2.25M Buy
+83,800
New +$1.78M 0.06% 369

Other funds holding IONS

Group One Trading's IONS Position: Q1 2026 in Review

Group One Trading reduced its Ionis Pharmaceuticals (IONS) stake by 50% in Q1 2026, selling an estimated $149K and leaving 1,892 shares worth $142K. The position accounts for ﹤0.01% of the portfolio, ranked #4407.

Group One Trading first reported a position in IONS in Q2 2013 and has held it in 36 quarters since. The position peaked at $9.55M in Q2 2015. 493 funds tracked by Wall St. Rank hold IONS as of Q1 2026.

  • Group One Trading held 1,892 shares of Ionis Pharmaceuticals worth $142K as of Q1 2026.
  • Group One Trading sold 1,886 Ionis Pharmaceuticals shares in Q1 2026, an estimated $149K.
  • Ionis Pharmaceuticals made up ﹤0.01% of Group One Trading's portfolio in Q1 2026, its #4407 holding.
  • Group One Trading first reported a position in Ionis Pharmaceuticals in Q2 2013 and has held it in 36 quarters since.
  • Group One Trading's Ionis Pharmaceuticals position peaked at $9.55M in Q2 2015.
  • 493 funds tracked by Wall St. Rank held Ionis Pharmaceuticals as of Q1 2026.

Based on Group One Trading's 13F filing for Q1 2026, filed 13 May 2026.