Major U.S. benchmarks challenge last-ditch support By: MarketWatch January 20, 2015 at 11:31 AM EST The U.S. markets have reached a bull-bear line in the sand defined by technical support at the January low. Read More >> Related Stocks: CBOE Volatility Index Celgene Corp Mid Cap SPDR 400 Trust, Series 1 Nasdaq Biotechnology Ishares ETF Netease Inc ADR Pier 1 Imports Russell 2000 Ishares ETF