U.S. stock futures edged higher on Wednesday as investors waited for July's consumer price index report, which is expected to shape what the Federal Reserve does at its September meeting. S&P 500 futures were up 0.3% and Nasdaq 100 futures were 0.7% higher. The Bureau of Labor Statistics was scheduled to release the CPI data at 8:30 a.m. CoreWeave stock surged 18% in premarket trading after its second-quarter adjusted operating income margin came in at 5%, clearing analyst forecasts. Super Micro Computer stock was up 9% after the server maker delivered better-than-expected quarterly earnings and revenue results.