UnitedHealth slumps after cutting annual profit forecast

Shares of healthcare firm UnitedHealth Group UNH.N slumps 10.3% to $525.01 before the bell

UNH cuts its annual adjusted profit forecast to a range of $26 to $26.50 per share from between $29.50 and $30 per share

Co reports Q1 adjusted profit of $7.20 per share, compared to analysts' expectations of $7.29 per share, according to LSEG data

As of last close, UNH is up ~16% YTD