U.S. stocks opened lower as investors increasingly discounted a US-China trade agreement and two major indices hit new heights. Dow Jones industrial average
DJIA, + 0.03%
opened 25 points, 0.1%, lower, while S&P 500
SPX, + 0.07%
dropped 3 points, or 0.1%. Nasdaq was down about 22 points, 0.3%. Shares from Cisco Systems Inc.
CSCO, -7.42% ,
a Dow component, down 6% in pre-market trading after providing guidance that hit Wall Street expectations.