Insero acquires Cause + Effect Strategy to expand data and AI services

Insero Advisors has acquired Rochester-based Cause + Effect Strategy, adding 33 employees and deepening its data, analytics and AI capabilities. The deal expands Insero’s advisory platform as more clients look for help turning data into business decisions and growth.

Why it matters: - Insero is broadening beyond traditional accounting and tax work into higher-growth data, analytics and AI advisory services. - The acquisition adds a specialized team and expands Insero’s ability to offer more integrated client solutions. - The move reflects rising demand for firms that can connect finance, strategy, data and AI in one offering.

What happened: - Insero Advisors acquired Cause + Effect Strategy, a Rochester-based data, analytics and AI services firm. - The transaction was announced Sept. 8, 2026. - Cause + Effect Strategy was founded in 2015. - Insero is a Rallyday Partners portfolio company and provides accounting, tax and advisory services. - The combination adds 33 employees to Insero.

The details: - Cause + Effect Strategy ranks No. 90 in AI and No. 2,450 overall on the 2026 Inc. 5000 list. - The firm focuses on building integrated systems that align strategy, data architecture, data engineering, analytics and AI. - Its services are designed to help clients solve problems, make better decisions, improve efficiency and support sustainable growth. - Insero employs about 160 professionals, with headquarters in Rochester and employees in 14 states. - Insero said the acquisition expands its strategic advisory capabilities and market-facing service offerings. - Insero also said the deal increases the breadth and depth of solutions available to clients. - Nancy Catarisano, CEO of Insero Advisors, said data, analytics and AI matter more than ever because of technology advances. - Catarisano said Cause + Effect’s expertise paired with Insero’s finance and accounting capabilities will create a deeper view of business performance and help clients execute improvement plans. - John Loury, president of Cause + Effect Strategy, said the deal creates a stronger platform to turn data, analytics and AI into measurable business impact. - Loury said the combined platform pairs data capabilities with finance, accounting and advisory expertise to help clients make better decisions, improve performance and grow. - Loury also said both firms share a commitment to trusted relationships, client service and investing in people and community. - Rallyday CEO Ryan Heckman said Insero is looking for ways to add more value to clients and that data and AI have become important services for companies of all sizes.

Between the lines: - The acquisition gives Insero a clearer foothold in a fast-growing advisory category tied to client demand for AI-enabled decision-making. - Cause + Effect adds a digital capability that can complement Insero’s existing professional services base and help the firm compete for broader advisory engagements. - The deal also fits Rallyday Partners’ model of backing founder-led companies that want to scale through expanded capabilities.

What's next: - Cause + Effect Strategy is expected to keep growing and add talent as demand rises. - Insero is likely to use the acquisition to deepen client relationships and cross-sell data and AI services alongside finance and advisory work. - The combined firm will continue operating from Rochester while serving clients across a wider footprint.

The bottom line: - Insero is using acquisition to move further into data and AI advisory at a time when clients want more connected, outcome-driven services.