Rivian stock faces selling pressure as UBS initiates a downgrade, with shares sliding over 3% in response to the analyst call. The move signals shifting sentiment from major financial institutions on the EV maker's near-term prospects. Traders watching RIVN should note the timing—institutional downgrades often precede broader market reassessments. Whether this represents a temporary correction or the start of a deeper pullback remains a key question for portfolio managers monitoring the stock.