PACB
Pacific Biosciences of California, Inc.
stockNASDAQ
At CloseNov 13, 2026 3:59:48 PM EST
1.96USD-0.761%(-0.01)7,020,506
Pre-marketNov 13, 2026 9:14:30 AM EST
2.00USD+1.523%(+0.03)
After-hoursNov 13, 2026 4:56:30 PM EST
1.96USD+0.256%(+0.01)
As of 2026-10-30, there were 53,681,529 shares short with a short interest of 17.65%.
PACB Short Interest - Official
PACB Short Position Change - Official
PACB Short Interest - Official
| Settlement Date1 | Short Interest % | Short Position | Days to Cover2 | Short Position Change | Short Position Change % | Shares Out | Shares Float |
|---|---|---|---|---|---|---|---|
| 2026-10-30 | 17.65 | 53,681,529 | 4.14 | +6,748,370 | +14.38 | 310,830,759 | 304,172,764 |
| 2026-10-15 | 15.43 | 46,933,159 | 2.19 | -291,289 | -0.62 | 310,830,759 | 304,172,764 |
| 2026-09-30 | 15.54 | 47,224,448 | 2.97 | -1,667,777 | -3.41 | 310,830,759 | 303,830,571 |
| 2026-09-15 | 16.09 | 48,892,225 | 10.49 | -686,545 | -1.38 | 310,830,759 | 303,830,571 |
| 2026-08-31 | 16.32 | 49,578,770 | 6.75 | -3,833,257 | -7.18 | 310,830,759 | 303,830,571 |
| 2026-08-14 | 17.58 | 53,412,027 | 6.63 | +4,407,186 | +8.99 | 310,830,759 | 303,830,571 |
| 2026-07-31 | 16.13 | 49,004,841 | 7.35 | +2,767,205 | +5.98 | 310,601,688 | 303,830,571 |
| 2026-07-15 | 15.22 | 46,237,636 | 9.97 | -1,252,568 | -2.64 | 310,601,688 | 303,830,571 |
| 2026-06-30 | 15.65 | 47,490,204 | 6.51 | -13,069,934 | -21.58 | 310,601,688 | 303,436,107 |
| 2026-06-15 | 19.96 | 60,560,138 | 10.17 | +633,340 | +1.06 | 310,601,688 | 303,436,107 |
| 2026-05-15 | 19.82 | 59,926,798 | 9.02 | +12,836,205 | +27.26 | 310,601,688 | 302,349,001 |
| 2026-04-30 | 15.90 | 47,090,593 | 7.04 | +726,187 | +1.57 | 310,487,099 | 296,162,133 |
| 2026-04-15 | 15.66 | 46,364,406 | 8.42 | +732,774 | +1.61 | 301,998,292 | 296,162,133 |
| 2026-03-31 | 15.41 | 45,631,632 | 8.41 | +4,243,011 | +10.25 | 301,998,292 | 296,162,133 |
| 2026-03-13 | 13.97 | 41,388,621 | 6.56 | +3,197,379 | +8.37 | 301,998,292 | 296,162,133 |
| 2026-02-27 | 12.90 | 38,191,242 | 7.14 | -725,569 | -1.86 | 301,907,431 | 296,162,133 |
| 2026-02-13 | 13.14 | 38,916,811 | 5.27 | +3,325,218 | +9.34 | 301,907,431 | 296,162,133 |
| 2026-01-30 | 12.02 | 35,591,593 | 4.25 | +499,846 | +1.42 | 301,907,431 | 296,162,133 |
| 2026-01-15 | 11.85 | 35,091,747 | 4.00 | +1,087,912 | +3.20 | 301,907,431 | 296,162,133 |
| 2025-12-31 | 11.48 | 34,003,835 | 5.31 | -255,697 | -0.75 | 301,907,431 | 296,162,133 |
| 2025-12-15 | 11.57 | 34,259,532 | 5.45 | +216,615 | +0.64 | 301,907,431 | 296,162,133 |
| 2025-11-28 | 11.36 | 34,042,917 | 3.08 | +473,218 | +1.41 | 301,907,431 | 299,661,240 |
| 2025-11-14 | 11.20 | 33,569,699 | 3.62 | +1,058,315 | +3.26 | 301,907,431 | 299,661,240 |
Historical data is split-adjusted.
1 Data from Finra. Finra publishes an updated file every two weeks.
2 Days to Cover (DTC) is also called Short Ratio. This is the Short Position / Average Daily Trading Volume.