PACB

Pacific Biosciences Of California, Inc.

$1.53 +0.03 (+2.00%) At close · Jul 15

Market Cap

$479.88M

310,601,688

Total shares sold short and not yet covered, reported to FINRA by broker-dealers and published twice a month (bi-monthly). Days to cover divides the short position by average daily volume; a high value (above 5) can signal short-squeeze potential.

Short Squeeze Score

76/100

Short interest 15.3% of shares — P95 Days to cover 6.5 — P89 Price vs VWAP +2.2% — P65 Short-volume trend +4.4% — P67 Short interest change -21.6% — P15 Worst FTD 0.19% of shares — P82

Peer-relative percentile rank across all stocks reporting short interest at the latest settlement date (2026-06-30). Weighted mean of the available factors (short interest 30%, days to cover 20%, price vs VWAP 15%, short-volume trend 15%, short-interest change 10%, fails-to-deliver 10%) plus catalyst boosts (price spike, volume surge, earnings within days), capped at +20 and clamped to 100.

1M 3M 6M 1Y 5Y All

Short Interest History

Settlement Date	Current Position	Previous Position	Change	Avg Daily Volume	Days to Cover
2026-06-30	47,490,204	60,560,138	-13,069,934	7,291,153	6.51
2026-06-15	60,560,138	48,707,384	+11,852,754	5,954,109	10.17
2026-05-29	48,707,384	59,926,798	-11,219,414	5,684,330	8.57
2026-05-15	59,926,798	47,090,593	+12,836,205	6,645,578	9.02
2026-04-30	47,090,593	46,364,406	+726,187	6,688,960	7.04
2026-04-15	46,364,406	45,631,632	+732,774	5,505,784	8.42
2026-03-31	45,631,632	41,388,621	+4,243,011	5,428,096	8.41
2026-03-13	41,388,621	38,191,242	+3,197,379	6,304,987	6.56
2026-02-27	38,191,242	38,916,811	-725,569	5,352,300	7.14
2026-02-13	38,916,811	35,591,593	+3,325,218	7,386,819	5.27
2026-01-30	35,591,593	35,091,747	+499,846	8,377,033	4.25
2026-01-15	35,091,747	34,003,835	+1,087,912	8,781,846	4.00
2025-12-31	34,003,835	34,259,532	-255,697	6,403,082	5.31
2025-12-15	34,259,532	34,042,917	+216,615	6,286,336	5.45
2025-11-28	34,042,917	33,569,699	+473,218	11,064,220	3.08
2025-11-14	33,569,699	32,511,384	+1,058,315	9,267,258	3.62
2025-10-31	32,511,384	34,508,178	-1,996,794	11,362,122	2.86
2025-10-15	34,508,178	37,967,832	-3,459,654	8,397,808	4.11
2025-09-30	37,967,832	45,550,788	-7,582,956	6,535,511	5.81
2025-09-15	45,550,788	37,111,300	+8,439,488	5,195,811	8.77
2025-08-29	37,111,300	42,168,373	-5,057,073	4,462,933	8.32
2025-08-15	42,168,373	41,870,792	+297,581	9,491,593	4.44
2025-07-31	41,870,792	44,383,358	-2,512,566	8,561,059	4.89

Showing 1–23 of 23 settlements

Key facts CIK 1299130 CUSIP 69404D108 13F (30d) 6 filings 6 filers Visit website