Here are the biggest calls on Wall Street on Friday: Wells Fargo downgrades Enphase Energy to equal weight from overweight Wells said in its downgrade of the solar inverter energy company that Enphase's "Europe strength [is] more than offset by U.S. weakness." "While growth in Europe remains robust and valuation has come down, an accelerating U.S. market slowdown in Q4 & 2024 could continue to weigh on shares." Morgan Stanley reiterates Apple as overweight Morgan Stanley said it's staying bullish going into Apple earnings next week. "Heading into another week of earnings, we expect strong results from AAPL (beat and...