Health care stocks were ending mostly higher this afternoon, with the NYSE Health Care Index rising 0.8% and the SPDR Health Care Select Sector ETF (XLV) up 0.3%. The Nasdaq Biotechnology index was slipping 0.3%. In company news, Acutus Medical (AFIB) nearly doubled in price on Monday, rising over 92% late in afternoon trading, after the company said the US Food and Drug Administration approved an expanded suite of products, including its AcQCross Qx transseptal system, providing doctors with improved access to the left side of the heart.