US stock index futures dip

US stock index futures dipped on Tuesday, as investors started a holiday-shortened week on a cautious note ahead of a fresh round of trade talks between the United States and China, reports Reuters.
Trade negotiations between the world's two largest economies will resume in Washington later in the day and will be followed by higher-level talks on Thursday.
Hopes that the two countries will hammer out a deal to end their protracted trade war have sparked a rally in US stocks, with the S&P 500 and the Nasdaq logging their best week in a month on Friday.
Both sides have said progress has been made, but few details have emerged from the talks so far.
Tariff-vulnerable industrial companies such as Boeing Co dropped 0.3 per cent and Caterpillar Inc 0.1 per cent in premarket trading.
The World Trade Organization said its quarterly outlook indicator of world merchandise trade slumped to its lowest reading in nine years, putting policymakers on guard for a sharper slowdown if trade tensions continue.