US stock futures mixed; eBay surges after GameStop's $56B buyout proposal

US stock futures showed mixed results Monday amid varied index performances and rising crude oil prices following OPEC+'s output increase. Notably, eBay's shares jumped 7.62% after GameStop proposed a $56 billion cash and stock buyout. Market watchers also noted steady Treasury yields and a high probability that the Federal Reserve will keep interest rates unchanged in June. Economic data releases and Fed speeches are expected to influence market direction this week.