Major megacap growth stocks like Apple Inc AAPL.O, Meta Platforms Inc META.O, Amazon.com AMZN.O, and Tesla Inc TSLA.O added between 1.3% and 2.1% as the yield on U.S. 10-year bonds US10YT=RR retreated from multi-year highs. US/ Tesla Inc TSLA.O, Netflix NFLX.O and Johnson & Johnson JNJ.N are also expected to report results later in the week. By Ankika Biswas Oct 17 (Reuters) - U.S. stock index futures extended gains on Monday on better-than-expected results from Bank of America, with investors scanning the latest batch of earnings for impact of decades-high inflation and rising interest rates on corporate profit.