Observed Signal · Aug 26, 2026 · M&A - Announced · Source: Trending Topics · Impact: 4/5 · Sentiment: Positive
Anthropic Eyes $2T IPO While Callstack Acquires Margelo
AI startup Anthropic is planning a massive initial public offering (IPO) targeting a $2 trillion valuation and aiming to raise up to $100 billion. The Claude creator plans to pitch investors on a total addressable market of over $30 trillion, equivalent to the entire U.S. gross domestic product. Notably, Anthropic’s annualized revenue recently crossed $65 billion, surpassing its chief rival, OpenAI. Separately, Polish software developer Callstack has acquired Vienna-based React Native engineering firm Margelo in a deal valuing the startup at over €20 million. Known for popular open-source libraries registering over 420 million downloads, Margelo will retain founder Marc Rousavy in the combined entity. This strategic merger aims to combine Margelo’s performance-oriented architecture with Callstack’s enterprise-scale capabilities to better address mobile and native software needs as AI reshapes development automation.
Anthropic's massive IPO plans underscore the explosive growth and financial scale of foundation model providers in the AI ecosystem, while Callstack's acquisition represents consolidation in core mobile development infrastructure.
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Key Takeaways & Evidence Grounding
- Anthropic is preparing for an IPO targeting a $2 trillion valuation and aiming to raise up to $100 billion.
- Anthropic intends to pitch a Total Addressable Market (TAM) of over $30 trillion, matching the entire U.S. GDP.
- Anthropic's annualized revenue recently crossed $65 billion, surpassing rival OpenAI.
- Polish software specialist Callstack acquired Vienna-based engineering firm Margelo in a transaction valuing Margelo at over €20 million.
- Margelo is renowned for open-source React Native libraries, which have registered more than 420 million total downloads.
Connected Companies & Entities
16 Entities mapped“Anthropic is preparing to go public with a number that stands out even in the current AI boom....”
“Polish software company Callstack is acquiring Vienna-based engineering firm Margelo....”
“Polish software company Callstack is acquiring Vienna-based engineering firm Margelo....”
“For comparison, SpaceX took in $86 billion in what was the largest IPO in history......”
“A $2 trillion valuation would make Anthropic the seventh most valuable company in the world the moment it starts trading, just behind TSMC.....”
“Nvidia, TSMC and Broadcom supply the infrastructure......”
“Nvidia, TSMC and Broadcom supply the infrastructure......”
“...Microsoft, Alphabet and Amazon run the data centers......”
“...Microsoft, Alphabet and Amazon run the data centers......”
“...Microsoft, Alphabet and Amazon run the data centers......”
“Anthropic’s annualized revenue recently passed $65 billion, putting it ahead of OpenAI....”
“Callstack was founded in 2016 in Wrocław, a few months after Meta released React Native....”
“Its finances got a boost last summer, when US fund Viking Global Investors came in with a growth investment that valued Callstack at roughly...”
Ontology Mapping & Concepts
Related Market Signals & Shifts
Recent verified developments and strategic activity across this market segment.
Anthropic Eyes Historic Mega IPO
Anthropic is reportedly preparing for one of the largest technology IPOs, with the Financial Times noting the startup has begun formal steps to explore a listing. The move could reshape the AI competitive landscape as Anthropic competes with OpenAI, Google, and others. The Financial Times reports that Anthropic has hired the law firm Wilson Sonsini to guide a potential IPO, a firm that previously advised Google, LinkedIn, and Lyft on listings. Investors indicate Microsoft and Nvidia have committed tens of billions in a private financing round supporting a possible valuation above $300 billion. The company is also expanding its infrastructure, planning around $50 billion in new data centers in Texas and New York and growing its international staff. Krishna Rao, a former Airbnb executive, has been recruited to lead IPO efforts. Timing remains uncertain, and talks with banks are described as informal.
Callstack Acquires Margelo; Sam Altman Custom OpenAI Watches
Polish software development agency Callstack has acquired Vienna-based mobile engineering firm Margelo in a deal valuing Margelo at over 20 million euros. Margelo, founded by Marc Rousavy, is highly regarded in the React Native community for its widely downloaded open-source libraries like Nitro Modules and VisionCamera. Post-acquisition, Rousavy will continue to lead Margelo's open-source projects while becoming a Callstack shareholder. Separately, OpenAI CEO Sam Altman has commissioned seven custom titanium luxury watches from Swiss manufacturer Vanguart for OpenAI's leadership, featuring branding, AI-themed engravings, and Python-inspired messages on the casebacks.
Investors Eye $2 Trillion IPO Valuation for Anthropic
Anthropic is reportedly preparing an autumn IPO after filing a confidential SEC application in early June and entering a quiet period, with investors and banks modeling valuations as high as $2 trillion. Reuters and other outlets say those valuations lean on aggressive multi-year revenue forecasts: the company reported a revenue run-rate of roughly $47 billion in May 2026 (up from about $9 billion at end-2025) and projects roughly $190–200 billion for 2028; Q2 2026 guidance included at least $10.9 billion in revenue and $559 million operating profit. Banks are using comparables such as Palantir, Cloudflare and SpaceX and high revenue multiples to price the deal. Anthropic faces regulatory and operational risks—U.S. export controls briefly halted distribution of Fable 5 and Mythos 5—and other challenges including a Pentagon legal dispute, competition from lower-cost Chinese models, infrastructure costs, and reported talks to acquire Decart for about $6 billion.
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