Simplex 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 | $87.4K | Buy |
+66,200
| New | +$118K | ﹤0.01% | 5255 |
|
|
2025
Q4 | – | Sell |
-198,300
| Closed | -$253K | – | 9666 |
|
|
2025
Q3 | $253K | Buy |
198,300
+15,100
| +8% | +$20.4K | ﹤0.01% | 4665 |
|
|
2025
Q2 | $227K | Sell |
183,200
-45,600
| -20% | -$52.7K | ﹤0.01% | 4378 |
|
|
2025
Q1 | $269K | Sell |
228,800
-11,300
| -5% | -$17.3K | ﹤0.01% | 4024 |
|
|
2024
Q4 | $439K | Sell |
240,100
-138,500
| -37% | -$270K | ﹤0.01% | 3682 |
|
|
2024
Q3 | $643K | Sell |
378,600
-44,600
| -11% | -$73.3K | ﹤0.01% | 3323 |
|
|
2024
Q2 | $579K | Buy |
423,200
+295,600
| +232% | +$597K | ﹤0.01% | 3508 |
|
|
2024
Q1 | $478K | Buy |
127,600
+40,700
| +47% | +$238K | ﹤0.01% | 3907 |
|
|
2023
Q4 | $852K | Sell |
86,900
-4,800
| -5% | -$39.3K | ﹤0.01% | 3153 |
|
|
2023
Q3 | $765K | Sell |
91,700
-30,500
| -25% | -$349K | ﹤0.01% | 2946 |
|
|
2023
Q2 | $1.63M | Sell |
122,200
-506,900
| -81% | -$6.16M | ﹤0.01% | 2145 |
|
|
2023
Q1 | $7.28M | Buy |
629,100
+590,700
| +1,538% | +$5.87M | 0.01% | 1065 |
|
|
2022
Q4 | $314K | Sell |
38,400
-79,300
| -67% | -$683K | ﹤0.01% | 3680 |
|
|
2022
Q3 | $683K | Sell |
117,700
-40,500
| -26% | -$232K | ﹤0.01% | 3103 |
|
|
2022
Q2 | $699K | Buy |
158,200
+36,500
| +30% | +$222K | ﹤0.01% | 3038 |
|
|
2022
Q1 | $1.11M | Buy |
121,700
+75,300
| +162% | +$867K | ﹤0.01% | 2791 |
|
|
2021
Q4 | $949K | Buy |
46,400
+13,500
| +41% | +$326K | ﹤0.01% | 2932 |
|
|
2021
Q3 | $1.13M | Buy |
32,900
+300
| +0.9% | +$8.89K | ﹤0.01% | 2889 |
|
|
2021
Q2 | $1.14M | Buy |
+32,600
| New | +$948K | ﹤0.01% | 2915 |
|
|
2021
Q1 | – | Sell |
-1,521
| Closed | -$3.94M | – | 9715 |
|
|
2020
Q4 | $3.94M | Buy |
1,521
+1,287
| +550% | +$21.9K | 0.01% | 1164 |
|
|
2020
Q3 | $230K | Buy |
234
+228
| +3,800% | +$1.31K | ﹤0.01% | 3932 |
|
|
2020
Q2 | $2K | Sell |
6
-21
| -78% | -$71 | ﹤0.01% | 7263 |
|
|
2020
Q1 | $8K | Buy |
27
+13
| +93% | +$53 | ﹤0.01% | 6611 |
|
|
2019
Q4 | $7K | Sell |
14
-33
| -70% | -$168 | ﹤0.01% | 6559 |
|
|
2019
Q3 | $24K | Sell |
47
-4
| -8% | -$22 | ﹤0.01% | 5675 |
|
|
2019
Q2 | $30K | Sell |
51
-355
| -87% | -$2.49K | ﹤0.01% | 5277 |
|
|
2019
Q1 | $293K | Buy |
406
+4
| +1% | +$29 | ﹤0.01% | 3217 |
|
|
2018
Q4 | $297K | Sell |
402
-279
| -41% | -$1.77K | ﹤0.01% | 2732 |
|
|
2018
Q3 | $368K | Buy |
+681
| New | +$2.92K | ﹤0.01% | 2942 |
|
|
2017
Q4 | – | Sell |
-72
| Closed | -$5K | – | 6488 |
|
|
2017
Q3 | $5K | Sell |
72
-22
| -23% | -$95 | ﹤0.01% | 4409 |
|
|
2017
Q2 | $1K | Sell |
94
-118
| -56% | -$476 | ﹤0.01% | 5671 |
|
|
2017
Q1 | $6K | Buy |
212
+14
| +7% | +$69 | ﹤0.01% | 4453 |
|
|
2016
Q4 | $1K | Sell |
198
-56
| -22% | -$407 | ﹤0.01% | 5465 |
|
|
2016
Q3 | $7K | Sell |
254
-242
| -49% | -$2.02K | ﹤0.01% | 3962 |
|
|
2016
Q2 | $24K | Buy |
496
+79
| +19% | +$722 | ﹤0.01% | 2737 |
|
|
2016
Q1 | $26K | Buy |
417
+250
| +150% | +$2.46K | ﹤0.01% | 2557 |
|
|
2015
Q4 | $90K | Buy |
167
+38
| +29% | +$341 | 0.01% | 1440 |
|
|
2015
Q3 | $2K | Buy |
+129
| New | +$631 | ﹤0.01% | 4687 |
|
|
2015
Q1 | – | Sell |
-12
| Closed | -$5K | – | 5423 |
|
|
2014
Q4 | $5K | Buy |
+12
| New | +$77 | ﹤0.01% | 3102 |
|
Other funds holding PACB
AIM
VCM
NAMA
Simplex Trading's PACB Position: Q1 2026 in Review
Simplex Trading opened a new position in Pacific Biosciences (PACB) in Q1 2026: 109,016 shares worth $144K. The stake represents ﹤0.01% of the portfolio and ranks #4675 among its holdings. This is a return to the name: Simplex Trading previously reported a position in PACB as recently as Q3 2025.
Simplex Trading first reported a position in PACB in Q1 2015 and has held it in 30 quarters since. The position peaked at $3.21M in Q4 2023. 229 funds tracked by Wall St. Rank hold PACB as of Q1 2026.
- Simplex Trading held 109,016 shares of Pacific Biosciences worth $144K as of Q1 2026.
- Pacific Biosciences was a new Simplex Trading position in Q1 2026.
- Pacific Biosciences made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #4675 holding.
- Simplex Trading first reported a position in Pacific Biosciences in Q1 2015 and has held it in 30 quarters since.
- Simplex Trading's Pacific Biosciences position peaked at $3.21M in Q4 2023.
- 229 funds tracked by Wall St. Rank held Pacific Biosciences as of Q1 2026.
Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.