The post Rivian vs. Stellantis: This Wall Street Bank Just Told You Which EV Stock to Own and Which to Dump appeared first on 24/7 Wall St.. Piper Sandler just drew a hard line between two of the auto sector’s most-watched names: Rivian Automotive (NASDAQ:RIVN) and Stellantis (NYSE:STLA). Which one should a retirement-focused investor actually own right now? The bank says buy Rivian and dump Stellantis. The retirement investor’s answer, once you…