S&P is 'on borrowed time'-go short: Technician By: CNBC.com News December 15, 2014 at 11:18 AM EST The U.S. has been trouncing global stocks, but Carter Worth of Sterne Agee says the S&P 500 can't ride alone forever. Read More >> Related Stocks: SPDR S&P 500 ETF Trust Sentinelone Inc Cl A