Amazon has reportedly increased its stake in Rivian to 18.1% which would make them Rivian's largest shareholder.

Amazon said late Wednesday it now owns 162,086,884 shares of Rivian, or 18.1% of the shares outstanding, which at current prices would be valued at about $9.75 billion at current stock prices


Amazon.com Inc. AMZN, 12.88% disclosed overnight that it boosted its stake in electric-vehicle maker Rivian Automotive Inc. RIVN, 3.37% to more than 18% and initiated a stake in self-driving software company Aurora Innovation Inc. AUR, 9.49% of more than 5%. Amazon said late Wednesday it now owns 162,086,884 shares of Rivian, or 18.1% of the shares outstanding, which at current prices would be valued at about $9.75 billion at current stock prices. That would be enough to make the ecommerce giant Rivian's largest shareholder, according to FactSet; Ford Motor Co. F, -10.41% is the fifth largest with a 10.7% stake. Amazon had owned 158,363,834 Rivian shares as of Dec. 31, according to a 13F filing also filed late Thursday. Amazon also said it now owned 35,239,761, or 5.2%, of Aurora Innovation shares, which at current prices would be valued at about $167.0 million. That would make Amazon the third-largest shareholder, according to FactSet data, behind Uber Technologies Inc. UBER, 5.07% at 46.8% and Toyota Motor Corp. TM, -1.42% 7203, -0.70% at 7.4%. Rivian shares shed 6.5% in morning trading Thursday and Aurora's stock lost 3.7%, while Amazon shares fell 6.8% and the S&P 500 SPX, 0.37% gave up 1.4%.