Battered megacap companies Microsoft Corp MSFT.O, Tesla Inc TSLA.O, Alphabet Inc GOOGL.O, Apple Inc AAPL.O and Meta Platforms Inc META.O rose between 0.6% and 0.7% in premarket trading. By Bansari Mayur Kamdar and Ankika Biswas Oct 12 (Reuters) - U.S. stock index futures rose on Wednesday, led by technology and growth shares, ahead of data on a key inflation indicator and minutes from the Federal Reserve's September meeting. A Reuters report showed the United States is scrambling to tackle unintended consequences of its new export curbs on China's chip industry that could inadvertently harm the semiconductor supply chain.