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
$991K Sell
13,200
-19,100
-59% -$1.51M ﹤0.01% 2729
2025
Q4
$2.56M Buy
32,300
+5,500
+21% +$414K ﹤0.01% 2059
2025
Q3
$1.75M Buy
26,800
+24,700
+1,176% +$1.21M ﹤0.01% 2445
2025
Q2
$83K Buy
2,100
+200
+11% +$6.54K ﹤0.01% 5140
2025
Q1
$57.3K Sell
1,900
-2,500
-57% -$81.9K ﹤0.01% 5054
2024
Q4
$154K Buy
4,400
+2,500
+132% +$93.4K ﹤0.01% 4140
2024
Q3
$76.1K Sell
1,900
-3,500
-65% -$163K ﹤0.01% 4381
2024
Q2
$257K Buy
5,400
+4,000
+286% +$164K ﹤0.01% 3185
2024
Q1
$60.7K Sell
1,400
-3,400
-71% -$162K ﹤0.01% 4550
2023
Q4
$243K Sell
4,800
-3,100
-39% -$148K ﹤0.01% 3692
2023
Q3
$358K Buy
7,900
+2,500
+46% +$103K ﹤0.01% 3260
2023
Q2
$222K Buy
5,400
+2,800
+108% +$108K ﹤0.01% 3828
2023
Q1
$92.9K Sell
2,600
-22,200
-90% -$834K ﹤0.01% 4368
2022
Q4
$937K Buy
24,800
+23,000
+1,278% +$967K ﹤0.01% 2472
2022
Q3
$80K Sell
1,800
-4,900
-73% -$206K ﹤0.01% 4988
2022
Q2
$248K Buy
6,700
+1,500
+29% +$56.6K ﹤0.01% 4095
2022
Q1
$193K Sell
5,200
-22,300
-81% -$730K ﹤0.01% 4833
2021
Q4
$837K Sell
27,500
-11,200
-29% -$353K ﹤0.01% 3542
2021
Q3
$1.3M Sell
38,700
-3,100
-7% -$117K ﹤0.01% 3124
2021
Q2
$1.67M Sell
41,800
-9,000
-18% -$353K ﹤0.01% 2841
2021
Q1
$2.28M Buy
50,800
+19,000
+60% +$1.06M ﹤0.01% 2321
2020
Q4
$1.8M Buy
31,800
+11,300
+55% +$563K ﹤0.01% 2141
2020
Q3
$973K Buy
20,500
+14,600
+247% +$811K ﹤0.01% 2218
2020
Q2
$348K Sell
5,900
-13,700
-70% -$762K ﹤0.01% 2918
2020
Q1
$927K Sell
19,600
-45,200
-70% -$2.52M 0.01% 1584
2019
Q4
$3.92M Buy
64,800
+9,300
+17% +$554K 0.03% 831
2019
Q3
$3.33M Sell
55,500
-127,100
-70% -$8.28M 0.03% 836
2019
Q2
$11.7M Sell
182,600
-54,000
-23% -$3.82M 0.11% 200
2019
Q1
$19.2M Sell
236,600
-16,600
-7% -$1.07M 0.21% 73
2018
Q4
$13.7M Buy
253,200
+6,700
+3% +$342K 0.12% 166
2018
Q3
$12.7M Buy
246,500
+15,000
+6% +$705K 0.1% 212
2018
Q2
$9.65M Buy
231,500
+170,600
+280% +$7.56M 0.08% 256
2018
Q1
$2.68M Sell
60,900
-126,000
-67% -$6.4M 0.03% 802
2017
Q4
$9.4M Sell
186,900
-49,400
-21% -$2.71M 0.07% 364
2017
Q3
$12M Buy
236,300
+39,700
+20% +$2.08M 0.11% 212
2017
Q2
$10M Buy
196,600
+33,300
+20% +$1.55M 0.1% 215
2017
Q1
$6.57M Sell
163,300
-40,700
-20% -$1.83M 0.08% 313
2016
Q4
$9.76M Sell
204,000
-5,300
-3% -$210K 0.09% 230
2016
Q3
$7.67M Buy
209,300
+56,000
+37% +$1.75M 0.08% 258
2016
Q2
$3.57M Buy
153,300
+96,200
+168% +$3.1M 0.04% 526
2016
Q1
$2.31M Sell
57,100
-97,400
-63% -$3.96M 0.03% 689
2015
Q4
$9.57M Sell
154,500
-104,300
-40% -$5.63M 0.11% 176
2015
Q3
$10.5M Buy
258,800
+72,000
+39% +$3.73M 0.14% 138
2015
Q2
$10.8M Sell
186,800
-8,900
-5% -$566K 0.15% 128
2015
Q1
$12.5M Sell
195,700
-4,700
-2% -$319K 0.2% 77
2014
Q4
$12.4M Buy
200,400
+73,000
+57% +$3.6M 0.19% 95
2014
Q3
$4.95M Sell
127,400
-1,200
-0.9% -$42.5K 0.08% 298
2014
Q2
$4.43M Sell
128,600
-72,300
-36% -$2.28M 0.07% 337
2014
Q1
$8.68M Buy
200,900
+106,500
+113% +$5.16M 0.15% 122
2013
Q4
$3.76M Buy
94,400
+12,000
+15% +$428K 0.06% 352
2013
Q3
$3.09M Sell
82,400
-19,900
-19% -$594K 0.06% 351
2013
Q2
$2.75M Buy
+102,300
New +$2.18M 0.07% 291

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.