Here are Wednesday's biggest calls on Wall Street: Goldman Sachs reiterates Nvidia as buy Goldman said it's standing by its buy rating on the stock despite reports of restrictions on AI chip exports to China. "That said, we continue to expect consistent outperformance from NVDA over the medium to long term, given the significant growth opportunity set available to the company outside of China across cloud service providers, consumer internet companies, and other/general enterprises." Goldman Sachs reiterates Snowflake as buy Goldman said it's standing by its buy rating after the company's investor day. "The event bolstered our conviction in SNOW's...