This Specialized Heart Monitor Maker Just Caught the Eye of a Major Healthcare Fund

What happened According to an SEC filing dated Feb. 17, 2026, RTW Investments disclosed a new position in iRhythm Holdings (NASDAQ:IRTC) after acquiring 1,181,990 shares during the fourth quarter. The fund’s quarter-end position in IRTC was valued at $210 million. What else to know This is a new position for RTW Investments, representing 2.1% of its $9.98 billion 13F reportable assets under management as of Dec. 31, 2025. Top five holdings after the filing: NASDAQ:MDGL: $1.2 billion (11.6% of AUM) ...