Lexington, MA 12/11/17—Quanterix, maker of the Simoa technology for digitalizing biomarker analysis, announced the completion of its IPO (see IBO 11/30/17), raising $73.7 million in gross proceeds. The company sold 4.9 million shares at $15 per share. Shares now trade on the NASDAQ under the ticker symbol QTRX. The underwriter’s option to purchase additional shares was fully exercised.

The stock began trading on December 7. The company’s stock price closed up 7.2% on its first day, opening at $16.30 per share and closing at $17.47 per share. Quanterix’s estimated market cap at the time of its IPO was $339 million, according to nasdaq.com.