On a day when stocks are rising, and all eleven market sectors are in the black, healthcare is the standout performer. This chart shows the Health Care SPDR (XLV) rising to the highest level since the middle of March. The bottom box shows the XLV/SPX ratio rising to the highest level since late April. The XLV has been rising faster than the SPX since the start of May. The XLV now appears to be on the verge of exceeding its March intra-day high at 86.23. Biotechs are the main driving force behind today's healthcare surge.