Rivian stock fell Monday following a couple of recent Wall Street downgrades. Risks are starting to outweigh potential rewards.Shares of the electric-vehicle start-up lost 7.8%, closing at $11.96 apiece,

Key Takeaways Shares of electric vehicle startup Rivian fell sharply Monday after analysts from Bank of America downgraded the stock.The analysts said the EV maker faces an uncertain demand and regulatory environment.