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 | $124K | Buy |
+94,300
| New | +$169K | ﹤0.01% | 4828 |
|
|
2025
Q4 | – | Sell |
-82,100
| Closed | -$105K | – | 9668 |
|
|
2025
Q3 | $105K | Sell |
82,100
-27,300
| -25% | -$37K | ﹤0.01% | 5679 |
|
|
2025
Q2 | $135K | Buy |
109,400
+45,600
| +71% | +$52.7K | ﹤0.01% | 4931 |
|
|
2025
Q1 | $75K | Buy |
63,800
+8,000
| +14% | +$12.3K | ﹤0.01% | 5382 |
|
|
2024
Q4 | $102K | Sell |
55,800
-4,100
| -7% | -$8K | ﹤0.01% | 5158 |
|
|
2024
Q3 | $101K | Buy |
59,900
+8,200
| +16% | +$13.5K | ﹤0.01% | 5225 |
|
|
2024
Q2 | $70K | Sell |
51,700
-112,800
| -69% | -$228K | ﹤0.01% | 5738 |
|
|
2024
Q1 | $616K | Sell |
164,500
-181,600
| -52% | -$1.06M | ﹤0.01% | 3631 |
|
|
2023
Q4 | $3.4M | Sell |
346,100
-93,000
| -21% | -$761K | ﹤0.01% | 1889 |
|
|
2023
Q3 | $3.67M | Buy |
439,100
+64,400
| +17% | +$736K | ﹤0.01% | 1556 |
|
|
2023
Q2 | $4.98M | Buy |
374,700
+400
| +0.1% | +$4.86K | ﹤0.01% | 1322 |
|
|
2023
Q1 | $4.33M | Sell |
374,300
-11,400
| -3% | -$113K | ﹤0.01% | 1389 |
|
|
2022
Q4 | $3.15M | Buy |
385,700
+318,500
| +474% | +$2.74M | ﹤0.01% | 1527 |
|
|
2022
Q3 | $390K | Buy |
67,200
+8,600
| +15% | +$49.3K | ﹤0.01% | 3760 |
|
|
2022
Q2 | $259K | Buy |
58,600
+3,900
| +7% | +$23.7K | ﹤0.01% | 4292 |
|
|
2022
Q1 | $497K | Buy |
54,700
+34,900
| +176% | +$402K | ﹤0.01% | 3851 |
|
|
2021
Q4 | $405K | Sell |
19,800
-50,200
| -72% | -$1.21M | ﹤0.01% | 4113 |
|
|
2021
Q3 | $2.4M | Hold |
70,000
| – | – | ﹤0.01% | 1926 |
|
|
2021
Q2 | $2.45M | Buy |
+70,000
| New | +$2.04M | ﹤0.01% | 1907 |
|
|
2021
Q1 | – | Sell |
-1,147
| Closed | -$2.98M | – | 9717 |
|
|
2020
Q4 | $2.98M | Buy |
1,147
+1,126
| +5,362% | +$19.1K | ﹤0.01% | 1396 |
|
|
2020
Q3 | $20K | Buy |
+21
| New | +$121 | ﹤0.01% | 6370 |
|
|
2020
Q1 | – | Sell |
-47
| Closed | -$24K | – | 8078 |
|
|
2019
Q4 | $24K | Buy |
+47
| New | +$239 | ﹤0.01% | 5817 |
|
|
2019
Q3 | – | Sell |
-15
| Closed | -$9K | – | 7712 |
|
|
2019
Q2 | $9K | Sell |
15
-334
| -96% | -$2.34K | ﹤0.01% | 6180 |
|
|
2019
Q1 | $252K | Sell |
349
-271
| -44% | -$1.96K | ﹤0.01% | 3364 |
|
|
2018
Q4 | $458K | Buy |
620
+572
| +1,192% | +$3.62K | ﹤0.01% | 2317 |
|
|
2018
Q3 | $25K | Buy |
48
+19
| +66% | +$82 | ﹤0.01% | 5786 |
|
|
2018
Q2 | $10K | Buy |
29
+10
| +53% | +$28 | ﹤0.01% | 6348 |
|
|
2018
Q1 | $1K | Sell |
19
-202
| -91% | -$525 | ﹤0.01% | 5727 |
|
|
2017
Q4 | $46K | Buy |
+221
| New | +$774 | ﹤0.01% | 2535 |
|
|
2017
Q3 | – | Sell |
-220
| Closed | -$33K | – | 6430 |
|
|
2017
Q2 | $33K | Sell |
220
-26
| -11% | -$105 | ﹤0.01% | 2791 |
|
|
2017
Q1 | $18K | Buy |
246
+200
| +435% | +$979 | ﹤0.01% | 3357 |
|
|
2016
Q4 | $6K | Sell |
46
-444
| -91% | -$3.23K | ﹤0.01% | 4209 |
|
|
2016
Q3 | $76K | Sell |
490
-52
| -10% | -$435 | 0.01% | 1757 |
|
|
2016
Q2 | $165K | Buy |
542
+88
| +19% | +$804 | 0.01% | 1119 |
|
|
2016
Q1 | $122K | Sell |
454
-274
| -38% | -$2.69K | 0.01% | 1197 |
|
|
2015
Q4 | $67K | Buy |
728
+708
| +3,540% | +$6.35K | 0.01% | 1677 |
|
|
2015
Q3 | $2K | Buy |
+20
| New | +$98 | ﹤0.01% | 4688 |
|
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.