Group One Trading’s Pacific Biosciences PACB Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
$48.6K Sell
36,800
-11,500
-24% -$20.6K ﹤0.01% 5278
2025
Q4
$90.3K Sell
48,300
-69,000
-59% -$133K ﹤0.01% 5080
2025
Q3
$150K Buy
117,300
+48,300
+70% +$65.4K ﹤0.01% 4962
2025
Q2
$85.6K Buy
69,000
+28,600
+71% +$33K ﹤0.01% 5116
2025
Q1
$47.7K Sell
40,400
-471,100
-92% -$723K ﹤0.01% 5201
2024
Q4
$936K Sell
511,500
-331,700
-39% -$647K ﹤0.01% 2636
2024
Q3
$1.43M Sell
843,200
-32,500
-4% -$53.4K ﹤0.01% 2000
2024
Q2
$1.2M Buy
875,700
+655,700
+298% +$1.32M ﹤0.01% 1843
2024
Q1
$825K Sell
220,000
-66,600
-23% -$390K ﹤0.01% 2258
2023
Q4
$2.81M Sell
286,600
-108,900
-28% -$891K 0.01% 1577
2023
Q3
$3.3M Sell
395,500
-25,600
-6% -$293K 0.01% 1230
2023
Q2
$5.6M Buy
421,100
+76,000
+22% +$924K 0.02% 874
2023
Q1
$4M Sell
345,100
-407,100
-54% -$4.05M 0.01% 983
2022
Q4
$6.15M Buy
752,200
+497,000
+195% +$4.28M 0.01% 1016
2022
Q3
$1.48M Buy
255,200
+163,400
+178% +$938K ﹤0.01% 2169
2022
Q2
$406K Buy
91,800
+60,300
+191% +$366K ﹤0.01% 3626
2022
Q1
$287K Buy
31,500
+2,600
+9% +$29.9K ﹤0.01% 4417
2021
Q4
$591K Buy
28,900
+7,300
+34% +$176K ﹤0.01% 3930
2021
Q3
$552K Sell
21,600
-115,100
-84% -$3.41M ﹤0.01% 4077
2021
Q2
$4.78M Sell
136,700
-87,200
-39% -$2.54M 0.01% 1730
2021
Q1
$7.46M Sell
223,900
-18,700
-8% -$655K 0.01% 1180
2020
Q4
$6.29M Buy
242,600
+237,000
+4,232% +$4.03M 0.01% 1125
2020
Q3
$55K Sell
5,600
-96,200
-94% -$554K ﹤0.01% 4591
2020
Q2
$351K Sell
101,800
-219,800
-68% -$748K ﹤0.01% 2912
2020
Q1
$984K Buy
321,600
+131,600
+69% +$539K 0.01% 1534
2019
Q4
$977K Sell
190,000
-13,100
-6% -$66.6K 0.01% 1902
2019
Q3
$1.05M Buy
203,100
+191,300
+1,621% +$1.07M 0.01% 1708
2019
Q2
$71K Sell
11,800
-184,900
-94% -$1.3M ﹤0.01% 3579
2019
Q1
$1.42M Sell
196,700
-28,000
-12% -$203K 0.02% 1166
2018
Q4
$1.66M Buy
224,700
+175,400
+356% +$1.11M 0.01% 1147
2018
Q3
$267K Sell
49,300
-34,300
-41% -$147K ﹤0.01% 2797
2018
Q2
$297K Sell
83,600
-57,400
-41% -$159K ﹤0.01% 2734
2018
Q1
$289K Sell
141,000
-122,200
-46% -$317K ﹤0.01% 2498
2017
Q4
$695K Buy
263,200
+38,900
+17% +$136K ﹤0.01% 1988
2017
Q3
$1.18M Buy
224,300
+147,900
+194% +$636K 0.01% 1438
2017
Q2
$272K Sell
76,400
-167,400
-69% -$675K ﹤0.01% 2423
2017
Q1
$1.26M Buy
243,800
+24,300
+11% +$119K 0.01% 1176
2016
Q4
$834K Sell
219,500
-1,200
-0.5% -$8.72K 0.01% 1435
2016
Q3
$1.98M Buy
220,700
+7,500
+4% +$62.7K 0.02% 859
2016
Q2
$1.5M Sell
213,200
-111,100
-34% -$1.01M 0.02% 980
2016
Q1
$2.76M Buy
324,300
+16,600
+5% +$163K 0.04% 600
2015
Q4
$4.04M Buy
307,700
+305,700
+15,285% +$2.74M 0.05% 463
2015
Q3
$7K Sell
2,000
-3,100
-61% -$15.2K ﹤0.01% 4417
2015
Q2
$29K Buy
5,100
+100
+2% +$579 ﹤0.01% 3858
2015
Q1
$29K Sell
5,000
-1,500
-23% -$10.3K ﹤0.01% 3698
2014
Q4
$51K Sell
6,500
-19,800
-75% -$127K ﹤0.01% 3358
2014
Q3
$129K Sell
26,300
-30,400
-54% -$159K ﹤0.01% 2773
2014
Q2
$350K Buy
56,700
+19,800
+54% +$99.1K 0.01% 1941
2014
Q1
$197K Buy
36,900
+16,900
+85% +$107K ﹤0.01% 2458
2013
Q4
$105K Sell
20,000
-5,600
-22% -$25.7K ﹤0.01% 2984
2013
Q3
$142K Buy
25,600
+19,600
+327% +$68K ﹤0.01% 2701
2013
Q2
$15K Buy
+6,000
New +$14.9K ﹤0.01% 4248

Other funds holding PACB

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

Group One Trading reduced its Pacific Biosciences (PACB) stake by 21% in Q1 2026, selling an estimated $170K and leaving 365,021 shares worth $482K. The position accounts for ﹤0.01% of the portfolio, ranked #3382.

Group One Trading first reported a position in PACB in Q2 2013 and has held it in 42 quarters since. The position peaked at $7.36M in Q4 2020. 229 funds tracked by Wall St. Rank hold PACB as of Q1 2026.

  • Group One Trading held 365,021 shares of Pacific Biosciences worth $482K as of Q1 2026.
  • Group One Trading sold 95,229 Pacific Biosciences shares in Q1 2026, an estimated $170K.
  • Pacific Biosciences made up ﹤0.01% of Group One Trading's portfolio in Q1 2026, its #3382 holding.
  • Group One Trading first reported a position in Pacific Biosciences in Q2 2013 and has held it in 42 quarters since.
  • Group One Trading's Pacific Biosciences position peaked at $7.36M in Q4 2020.
  • 229 funds tracked by Wall St. Rank held Pacific Biosciences as of Q1 2026.

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