Rivian Stock Exploded Today. Here's What Investors Need to Know.

Rivian stock soared as it announced a big investment at a crucial time.Rivian Automotive (RIVN 20.53%) received some surprising but welcome news last night. Even after the stock jumped by 8% yesterday, it soared by as much as another 37% Wednesday morning. A new investment and partnership has the stock flying.While the stock pared some of this morning's gains, it remained higher by 22.7% as of 12:45 p.m. ET. That's because of the announcement that Volkswagen is investing up to $5 billion in Rivian over the ...