This is what you need to know before the bell:
1. Investors pull back from recent highs amid thinning liquidity into the peak of the summer holidays and modestly weaker trade data from China.
2. CBS Corp. (CBS) on Monday, Aug. 3, said its digital subscription platforms will amass more than 4 million total subscribers in 2017. And COO Joseph Ianniello declared its 8 million subscriber goal by 2020 "conservative" on an investor conference call Monday.
3. InterContinental Hotels Group plc (IHG) shares fell the most in more than 10 months Tuesday after the Holiday Inn owner reported slower-than-expected second quarter revenue thanks in part to a drop in business travel.
4. Alphabet Inc.'s (GOOGL) Google has fired the employee that authored a controversial memo that suggested men were better suited for tech jobs than women.
5. U.S. stock futures pointed to a flat to lower open for Wall Street on Tuesday, Aug. 8, while European and Asian markets traded mixed following modestly weaker trade data from China.
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