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BioMarin Pharmaceutical Inc. (BMRN) short interest & options flow

NASDAQ

BioMarin Pharmaceutical finds itself in an uncomfortable position this week: short sellers have been adding steadily even as a broad analyst consensus insists the stock is worth far more than its current price. The short interest story is the week's clearest tension. Bears have been building positions for over a month. At 6.6% of free float, short interest has risen 27.7% over the…

Latest pulse19 May 2026

BMRN cost to borrow surges 178% in one week to 0.33%, lowest level on record but sharply reversing from recent lows.

$55.66-3.10% 1d+0.56% 1w-2.66% 1mClose: 3 Nov 2026
Cost to borrow
Low
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Availability
High
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Market cap
$10.77B
Next earnings
19 Feb 2027
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Key data as of 4 Nov 2026

ORTEX chart of BioMarin Pharmaceutical Inc. (BMRN) share price and short interest (% of free float), six months to November 3, 2026

BMRN news and analysis

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Trader NoteBMRN

BioMarin Shorts Build Into Earnings as Options Turn Bullish

BMRN heads into its October 27 earnings report with a striking disconnect: short sellers are rebuilding positions at the fastest rate in months, yet options traders are growing more bullish than at almost any point in…

1 min read

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