The Federal Reserve’s Jerome Powell is on deck Wednesday, where rate cuts are all but expected. But after the closing bell, it’s big-tech earnings. - MarketWatch photo illustration/Getty Images, iStockphoto It’s hard to overstate just how crucial Wednesday could be for the stock market in its final leg of this year. Major U.S. equity indexes already zoomed to fresh record highs this week ahead of the Federal Reserve’s expected decision to cut rates on Wednesday, with a batch of a major tech earning set t ...