U.S. stock futures are lower before May inflation data and details of a U.S.-China trade deal. After two days of talks in London, U.S. and China representatives said they reached a trade agreement and will now seek approval on the framework from the U.

U.S. stock index futures edged lower on Wednesday after U.S.-China trade talks offered little sign of a durable resolution to their longstanding trade tensions, while investors turned their focus to a key inflation reading.