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Cerus Corporation (CERS) short interest & options flow

NASDAQ

Cerus Corporation heads into its August 3 earnings report with short sellers meaningfully more active than a month ago — yet the borrow market shows no urgency on either side. The short interest story is the most notable setup heading into the print. Bears have added roughly 22% more short exposure over the past month, lifting short interest to nearly 7% of the free float — a level…

$1.95-5.80% 1d-16.67% 1w-15.22% 1mClose: 10 Nov 2026
Short interest % of float
Rising
Live SI on ORTEX →
Cost to borrow
Low
Live CTB on ORTEX →
Availability
High
Live availability on ORTEX →
Market cap
$394M
Next earnings
26 Feb 2027
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Key data as of 11 Nov 2026

ORTEX chart of Cerus Corporation (CERS) share price and short interest (% of free float), six months to November 10, 2026

CERS news and analysis

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