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Pacific Biosciences of California, Inc. (PACB) short interest & options flow

NASDAQ

PACB arrives at its Q3 earnings report tonight with the central tension from last week's note unresolved: short sellers who refused to cover into a 25% rally are still there, and the stock has since given back 10% on the week. The positioning tells a story of entrenched skepticism. Short interest holds at 15.8% of free float, with shares short ticking up another 4% over the past…

$2.09-6.70% 1d-18.04% 1w-10.30% 1mClose: 11 Nov 2026
Short interest % of float
High and rising
Live SI on ORTEX →
Cost to borrow
Low
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Market cap
$654M
Next earnings
12 Feb 2027
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Key data as of 12 Nov 2026

ORTEX chart of Pacific Biosciences of California, Inc. (PACB) share price and short interest (% of free float), six months to November 11, 2026

PACB news and analysis

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