Hedge funds and other institutional investors have recently made changes to their positions in the stock. UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC lifted its position in iRhythm Technologies by 169.7% during the first quarter. UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC now owns 903,084 shares of the company's stock worth $94,535,000 after buying an additional 568,261 shares in the last quarter. Champlain Investment Partners LLC increased its stake in shares of iRhythm Technologies by 13.3% in the 1st quarter. Champlain Investment Partners LLC now owns 822,791 shares of the company's stock worth $86,130,000 after acquiring an additional 96,529 shares during the last quarter. Blair William & Co. IL increased its stake in shares of iRhythm Technologies by 30.6% in the 1st quarter. Blair William & Co. IL now owns 789,999 shares of the company's stock worth $82,697,000 after acquiring an additional 185,262 shares during the last quarter.