Add-on·Financial/Payments·September 24, 2026
73 Strings closes Callisto acquisition
The acquisition adds AI tools for private-markets due diligence and data-room analysis to 73 Strings’ valuation and portfolio intelligence platform.
Buyer73 Strings
TargetCallisto
SponsorGoldman Sachs Alternatives
TypeAdd-on
IndustryFinancial
Sub-sectorPayments
73 Strings has acquired Paris-based Callisto, whose AI tools automate due diligence, data-room analysis and investment-document preparation for private-markets firms. Callisto founders Charles Farhat and William Profit are joining the buyer as co-heads of AI product.
73 Strings said it plans to integrate Callisto’s technology into its valuation, extraction and monitoring products.
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