Getty Images Listen below or on the go on Apple Podcasts and Spotify    OpenAI dethrones SpaceX as world's most valuable startup. (00:21) White House halts ~$$26B in funding for infrastructure, climate projects. (00:53) Amazon (AMZN) introduces a new private label aimed at Costco's (COST) Kirkland and Walmart's (WMT) Great Value lines. (02:31) This is an abridged transcript. OpenAI is worth $$500B. The Microsoft backed company finalized a share sale that allowed current and former employees to sell stock  ...