Osaic Adds $250 Million Firm O’Reilly Through Millenia Investments

By Amit Chowdhry ● Aug 18, 2026

O’Reilly LLC has joined Millenia Investments and affiliated with Osaic, bringing approximately $250 million in client assets to the combined wealth management platform. The Chesterfield, Missouri-based firm was previously affiliated with LPL Financial.

O’Reilly LLC is led by Patrick O’Reilly, CFP, who has joined Millenia Investments as a financial advisor.

Carrie Wyatt has also joined the firm as a service advisor support specialist.

Founded by Patrick O’Reilly’s father, Michael O’Reilly, the firm has served clients in the greater St. Louis area for more than 50 years.

O’Reilly LLC provides financial guidance to private investors, professionals, small and midsized business owners and ERISA retirement plans.

The combination with Millenia Investments is also tied to a longstanding relationship between the two firms.

Michael O’Reilly was one of Millenia Investments President Stephen Serati’s earliest mentors.

Serati previously served as Michael O’Reilly’s first succession partner before Patrick O’Reilly ultimately joined the family business.

Decades later, the two organizations are now combining as part of another succession and growth phase.

Through its affiliation with Osaic, the combined organization will gain access to additional technology, investment and planning capabilities.

Those resources include Osaic’s OneView consolidated reporting platform and its DirectChoice and Wealth Management Platform investment solutions.

The firms will also have access to advanced tax planning software intended to support more detailed planning conversations, particularly with higher-net-worth clients.

Millenia Investments is led by Serati and Samantha Estrada, BFA, who serves as executive manager and registered principal.

For O’Reilly LLC, the move provides access to a broader wealth management infrastructure while maintaining the relationship-focused approach that has defined the business over multiple generations.

The transaction also expands Osaic’s advisor network.

Osaic supports more than 10,000 financial professionals and is a portfolio company of Reverence Capital Partners.

The firm provides technology, investment and wealth management resources to independent financial professionals and advisory businesses.

Osaic said the shared history between Millenia Investments and O’Reilly LLC, along with their approach to succession planning and ties to the St. Louis market, contributed to the strategic fit.

KEY QUOTES:

“This partnership represents an exciting next chapter for our clients and our team. Millenia Investments shares our commitment to personal service and long-term relationships.”

“Through its affiliation with Osaic, we will have access to expanded technology and investment resources that can help us deliver an even more connected and convenient experience for the families and businesses we serve.”

Patrick O’Reilly, Principal Owner of O’Reilly LLC

“Michael had a profound influence on my career, so welcoming Patrick, Carrie and the O’Reilly team to Millenia Investments is especially meaningful.”

“Our firms share deep roots in the St. Louis community and a common belief that strong financial guidance begins with trust. We look forward to honoring the O’Reilly legacy while creating new opportunities to serve clients for generations to come.”

Stephen Serati, President of Millenia Investments

“Millenia Investments and O’Reilly LLC have built enduring businesses by putting relationships first.”

“Their shared history, thoughtful approach to succession and commitment to the St. Louis community make this a natural fit. We are proud to support the combined team with the scale, technology and wealth management resources to pursue its long-term vision.”

John DiMonda, Co-Head of the Osaic Independent Channel

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