Stack & Signal

Fintech, AI, and the future of money. Track signal as finance, data, and technology converge.

Category: Fintech Infrastructure

  • Adyen Acquires Orb: Payments and Billing Are Merging Into One Stack

    Adyen Acquires Orb: Payments and Billing Are Merging Into One Stack

    Payments and billing are collapsing into a single financial workflow. On June 11, 2026, Dutch payments giant Adyen announced it was acquiring Orb, a usage-based billing platform, for $335 million. I looked it up, Orb has just over 1,000 followers on X. This is a story about how the quiet companies powering the AI economy…

  • The Race to Build the AI Operating Layer for Accounting

    The Race to Build the AI Operating Layer for Accounting

    I’ve been covering fintech and AI long enough to spot when something actually shifts an industry. This week it happened, twice. On June 3, Ramp launched Stack, an AI operating system built from the ground up for accounting firms. The day before, Crete Professionals Alliance rebranded as Current and confirmed Thrive Holdings’ roughly $1 billion…

  • The Next AI Battle in Fintech: Robinhood Introduces Bring-Your-Own Agent Model

    The Next AI Battle in Fintech: Robinhood Introduces Bring-Your-Own Agent Model

    For years, the fintech industry has been asking a relatively narrow question about AI: how can a financial app become smarter? That question produced a familiar product pattern. Banks, brokers, and wealth managers added AI assistants to summarize research, answer account questions, draft advisor notes, scan portfolios, or help users build investment ideas. In that…