Stocks climb to session highs in broad-based strength led by telecom
(+4.7%), energy (+4.8%), materials (+4.2%) and financials (+3.3%).
The healthcare sector is underperforming on a relative basis with a gain of 1.4%.
The S&P 500 has rallied 18% since its multi-year low reached on October 10, but is still down 32% this year.