Nvidia just took a one-two punch from Wall Street (NVDA)

Nvidia is sliding after two Wall Street firms took shots at the company.Goldman Sachs and Citron Research both announced a pullback on their optimism while maintaining a good overall outlook.The stock is down 1.52% to $236.84 after Goldman Sachs removed Nvidia from its conviction list, and Citron said the stock is about to drop about 15% to $200.