Rivian Automotive (NASDAQ:RIVN) has been on a winning streak lately. A spate of positive developments has really moved the needle for Rivian stock over the past two months.The EV maker may not even be done with its extended rebound in price. An upcoming event could give the summer rally further momentum. However, while there’s been positive news aplenty for Rivian lately, that may not be the case in the coming months. There’s another factor on the horizon that could be a big negative for shares. I’m talking ...