73 Strings Acquired Fintech Startup Callisto
New York-based 73 Strings has purchased the French firm to expand its AI capabilities for alternative asset managers.
Updated on Oct. 13, 2026 in Financial Services
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73 Strings acquired Paris-based Callisto to strengthen its software offerings for private market workflows. The deal integrates Callisto’s AI engineering team and technology into the 73 Strings product organization.
Why it matters
This acquisition aims to bolster the platform’s AI-driven due diligence and investment documentation tools. By incorporating Callisto’s technology, 73 Strings intends to expand the capabilities available to its alternative asset manager clients.
73 Strings counts 9 of the 10 largest global private capital firms among its client base, following a $55 million Series B funding round in 2025. The platform now oversees a combined client portfolio exceeding $20 trillion in assets.
The players
73 Strings
A New York-based firm that develops technology platforms for private market asset managers.
Callisto
A Paris-based fintech company specializing in the automation of private market investment workflows.
Charles Farhat
A co-founder of Callisto who joined 73 Strings as a Co-Head of AI Product.
William Profit
A co-founder of Callisto who joined 73 Strings as a Co-Head of AI Product.
Matt Storey
The Chief Product Officer at 73 Strings who oversees the firm's product organization and AI integration.
The details
Callisto’s software automates essential private market tasks like investment documentation and due diligence. 73 Strings plans to integrate these tools using the Model Context Protocol to launch new simulation features within its 73 Intelligence platform.
Timeline
73 Strings was founded in 2020.
The firm raised $55 million in Series B funding in 2025.
The acquisition of Callisto was announced on October 13, 2026.
Market Landscape
The acquisition positions 73 Strings to aggressively compete in the sector of AI-automated private market management. By utilizing the Model Context Protocol, the company is outpacing traditional manual workflows to secure a larger share of the $20 trillion market it services.
Clients using 73 Strings platforms can expect upcoming access to new AI agent capabilities and enhanced simulation tools. These updates are designed to streamline investment documentation and due diligence workflows for asset managers.
The takeaway
The move signals a broader transition toward using autonomous AI agents to manage complex investment data. Asset managers can expect deeper automation levels as firms look to replace legacy documentation processes with integrated intelligence platforms.
Further reading
For more on industry shifts, explore the Financial Services section.
Source note: This article includes information reported by IT Brief US.
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