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Avantor IPO swells to $3.33B after options exercised

John George
Avantor IPO swells to $3.33B after options exercised

Radnor-based chemical and laboratory products supplier Avantor closed its initial public stock offering, which swelled to $3.33 billion after underwriters exercised their full option to purchase additional shares to cover overallotments. Avantor [NYSE: AVTR) ended up selling 238.05 million shares of common stock at $14 per share. This year only Uber's $8.1 billion IPO, completed earlier this month, was larger.