Observed Signal · Aug 26, 2026 · M&A - Announced · Source: Trending Topics · Impact: 3/5 · Sentiment: Positive
Revolut Launches EURR Stablecoin; Callstack Acquires Margelo for €20M
This digest covers two major developments in fintech and mobile engineering. First, Revolut is launching its first euro-backed stablecoin, EURR, initially available in Denmark, Poland, and Portugal, with plans to expand across the European Economic Area. The stablecoin is issued by Luxembourg-based Bridge, a subsidiary of Stripe, while Revolut acts as the distributor. Second, Polish software firm Callstack is acquiring Vienna-based React Native engineering company Margelo in a deal valuing Margelo at over 20 million euros. Margelo is highly regarded for its open-source libraries, including Nitro Modules and VisionCamera, used by major platforms like Discord and Coinbase. Callstack, backed by Viking Global Investors, intends to integrate Margelo's performance technology to support its enterprise clients as AI agent technology shifts software development toward native architecture and performance optimization.
Features a significant European mobile architecture acquisition (€20M+ valuation) and a major stablecoin launch by Revolut leveraging Stripe's Bridge infrastructure.
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Key Takeaways & Evidence Grounding
- Revolut is launching its EURR stablecoin in Denmark, Poland, and Portugal, with plans to expand across the EEA by the end of 2026.
- Stripe-owned infrastructure provider Bridge is the actual issuer of the EURR token, with Revolut acting as the sole distributor.
- Polish software house Callstack is acquiring Vienna-based React Native specialist Margelo in a deal valuing Margelo at over 20 million euros.
- Margelo's open-source libraries, including VisionCamera and react-native-mmkv, have combined downloads exceeding hundreds of millions.
- Callstack was valued at approximately 120 million euros following a growth investment from Viking Global Investors in 2025.
Connected Companies & Entities
9 Entities mapped“Revolut is launching its own euro-pegged stablecoin....”
“Polish software company Callstack is acquiring Vienna-based engineering firm Margelo....”
“Polish software company Callstack is acquiring Vienna-based engineering firm Margelo....”
“The payments giant acquired Bridge in a deal reported at around 1.1 billion US dollars, at the time the largest crypto takeover the industry...”
“Margelo lists Discord, Coinbase, Expensify, MetaMask, Rainbow, VSCO and WalletConnect among its references......”
“Margelo lists Discord, Coinbase, Expensify, MetaMask, Rainbow, VSCO and WalletConnect among its references......”
“For comparison, Circle recently reported around 403 million euros of its own euro stablecoin EURC in circulation......”
“Its finances got a boost last summer, when US fund Viking Global Investors came in with a growth investment that valued Callstack at roughly...”
“Callstack was founded in 2016 in Wrocław, a few months after Meta released React Native....”
Ontology Mapping & Concepts
Related Market Signals & Shifts
Recent verified developments and strategic activity across this market segment.
Revolut Launches EURR Stablecoin in Partnership with Stripe's Bridge
Revolut has launched EURR, its first Euro-pegged stablecoin, in partnership with Stripe. Although marketed as Revolut Euro, the token is legally issued by Bridge Building S.A., a Luxembourg-licensed e-money institution and subsidiary of Stripe (acquired for $1.1 billion). Revolut Digital Assets Europe Ltd serves as the sole distributor. Initially available to select customers in Denmark, Poland, and Portugal, EURR is slated for expansion across the European Economic Area (EEA) later this year. Compliant with EU MiCA regulations, each token is backed 1:1 by Euro reserves. The token currently operates on Ethereum and Polygon, with support for other networks like Solana and Arbitrum planned for the future.
Callstack Acquires Margelo for €20M; Osmund Energy Exits Stealth
Two key European tech developments have been announced. First, Danish energy startup os.energy exited stealth, launching Osmund, a zero-margin digital electricity app providing power at cost-price. To scale its platform, os.energy secured a €1 million pre-seed investment from Copenhagen's PSV Tech. Second, Polish software firm Callstack acquired Vienna-based React Native specialist Margelo in a deal valuing Margelo at over €20 million. Renowned for open-source mobile libraries like VisionCamera with over 420 million total downloads, Margelo serves major clients including Discord and Coinbase. Callstack leveraged capital from its 2025 growth investment by Viking Global Investors, which previously valued Callstack at approximately €120 million, to fund the acquisition. Post-acquisition, Margelo's founder Marc Rousavy will remain as a shareholder, and its libraries will continue under open licensing.
Callstack Acquires Margelo for €20M; Bitcoin Hits $80,000
In August 2026, Polish software company Callstack announced the acquisition of Vienna-based mobile engineering firm Margelo, valuing the company at over €20 million. Both companies specialize in React Native, a prominent cross-platform application framework. Margelo is highly regarded for its open-source libraries, such as Nitro Modules and VisionCamera, which have amassed hundreds of millions of downloads. Concurrently, the global cryptocurrency market experienced a major rally, with Bitcoin stabilizing near $80,000 ahead of the Federal Reserve's Jackson Hole symposium. This year's summit, led by Fed Chair Kevin Warsh, features a program focused on financial innovation and digital payments, directly intersecting with the blockchain and digital assets ecosystem.
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