# Amazon's Anthropic stake is leading to a huge windfall > Source: > Published: 2026-07-30 21:53:02+00:00 Amazon's stake in Anthropic is proving to be a massive boon to the world's largest online retailer. In its latest quarterly earnings report, Amazon reported non-operating pre-tax other income of $53.4 billion, "primarily from our investment in Anthropic." According to previous financial filings, Amazon has invested $13 billion in Anthropic with the potential for up to $20 billion more. [In June, Anthropic announced](https://www.businessinsider.com/anthropic-submits-s-1-joins-ipo-race-with-openai-2026-6) that it confidentially filed for an initial public offering, taking the first step [toward a highly anticipated IPO](https://www.businessinsider.com/anthropic-ipo-filing-wall-street-analysts-investors-reactions-2026-6). In late May, Anthropic said that it had completed a Series H funding round that valued the company at $965 billion. Amazon isn't the only Big Tech name sharing in Anthropic's success. On Wednesday, [Microsoft reported](https://www.businessinsider.com/microsoft-ai-capex-unchanged-data-centers-spending-tech-giants-2026-7) its investment in Anthropic had netted a $3.2 billion gain. Microsoft previously invested $5 billion in Anthropic. Anthropic has seen its valuation skyrocket as the popularity of its Claude family of models pushes the overall generative AI race.