U.S. stock indexes dipped on Monday, led by losses in shares of Amazon and technology companies, as investors awaited quarterly reports from a host of marquee names to gauge the impact of an escalating trade conflict between the United States and China.
Amazon.com slipped 1.4 percent and was the biggest drag on the benchmark S&P 500 and the Nasdaq after U.S. President Donald Trump renewed his attacks on the online giant.
The S&P information technology sector fell 0.55 percent. Apple was down 0.83 percent, while Google-parent Alphabet dipped 0.4 ahead of results after markets close.
A drop in shares of chipmakers such as Intel, Nvidia, Micron also pressured the index, the biggest decliners among the 11 main S&P sectors.
Investors are also worried that the U.S.-Sino trade war could spill over to the currency markets. Trump has criticized the dollar's strength, while accusing China of manipulating the yuan, which Beijing has denied.
"We have a whole plate of issues for investors to deal with, including currency manipulation, which is going to tie into the trade war," said Andre Bakhos, managing director at New Vines Capital LLC in Bernardsville, New Jersey.
"Investors are waiting for more earnings news to create a convincing direction for the market."
About 180 S&P companies, including Ford Motor, 3M Co and Boeing, as well as a host of high-flying technology names such as Facebook, Twitter and Intel will report later in the week.
Second-quarter earnings season has been healthy so far, with analysts' profit growth forecast now at 22 percent, up from 20.7 percent on July 1, according to Thomson Reuters I/B/E/S.
Hasbro rose 11.1 percent, the most on the benchmark S&P 500, after the toymaker's quarterly revenue and profit topped analysts' estimates.
At 9:57 a.m. EDT the Dow Jones Industrial Average was down 27.15 points, or 0.11 percent, at 25,030.97, the S&P 500 was down 4.76 points, or 0.17 percent, at 2,797.07 and the Nasdaq Composite was down 40.45 points, or 0.52 percent, at 7,779.75.
Investors are also tracking the bond market, where yield on the U.S. 10-year Treasury note hit a one-month high of 2.90 percent.
The financial sector rose 0.81 percent, the most among the three S&P sectors trading higher.
Among stocks, shares of Illinois Tool Works dropped 6.9 percent after the industrial company cut its full-year profit forecast and margins forecast, blaming the strong dollar.
Tesla's shares fell 5.2 percent after a report that the electric car maker has turned to some suppliers for a refund of previously made payments in a bid to turn a profit.
Hospital operator LifePoint Health surged 33.8 percent on agreeing to be bought by Apollo Global Management LLC in a deal valued at about $5.6 billion.
Declining issues outnumbered advancers for a 1.56-to-1 ratio on the NYSE and for a 1.63-to-1 ratio on the Nasdaq.
The S&P index recorded 10 new 52-week highs and three new lows, while the Nasdaq recorded 40 new highs and 25 new lows.