iRhythm Technologies, which provides a device and analysis for detecting cardiac arrhythmias, raised $107 million in an upsized IPO by offering 6.3 million shares at $17, above the $13 to $15 range. It had originally planned to raise $75 million by offering 5.4 million shares. iRhythm Technologies plans to list on the Nasdaq under the symbol IRTC. J.P. Morgan and Morgan Stanley acted as lead managers on the deal.
