By Bret Kenwell Ford reduced its stake in Rivian stock. Should longs bail on this name too. I don’t want to say Rivian (RIVN) – Get Rivian Automotive, Inc. Class A Report stock got what it deserved because at the end of the day, it was only taking advantage of favorable market conditions. Further, even pointing out that Rivian investors got what they deserved does no good — it just adds salt to the wound now that the stock is down 87% from the highs. That said, at one point this stock was more valuable than Ford (F) – Get Ford Motor Company Report and General Motors (GM) – Get General Motors C…