Our Team

Meet Our Team

Departments

  • Operations

Locations

  • Bellevue

Roles

  • Executive Team

Matt Sonnen

Chief Operating Officer

Matt Sonnen has over 25 years of experience in the financial services industry. As Chief Operating Officer, Matt manages all aspects of Coldstream’s operational platforms to identify opportunities to scale and systematize processes ensuring capacity for the firm’s continued growth. In addition, Matt will also oversee the firm’s Information Technology, Performance Reporting, Client Service, and CRM efforts.

Before joining Coldstream, Matt was the Founder and CEO of PFI Advisors – a firm dedicated to consulting registered investment advisor (RIA) owners on best infrastructure and culture practices. Matt has been a thought-leader in our industry – publishing over 270 practice management articles, research papers, and podcasts. In June 2021, he launched The COO Society to create a community of RIAs centered around coaching operations professionals.

Matt learned the ins and outs of the wirehouse model at Merrill Lynch in the late 1990s.  Matt left Merrill in 2005, and a few years later he was introduced to the RIA marketplace, helping build the infrastructure for Luminous Capital prior to its founding in 2008.  As COO and CCO at Luminous, he navigated technology and compliance challenges as the firm grew from $1.7 billion in assets to nearly $6 billion in less than five years.  Luminous Capital sold to First Republic Bank for more than $100 million in 2012, after which Matt headed to Focus Financial Partners in New York City where he helped partner firms streamline operations and improve back-office efficiencies.

Matt graduated from the University of California Los Angeles with a Bachelor of Arts in Economics. He currently resides in California with his wife, Reese (Larissa), and son, Luke.

THE MOST TREASURED THING I OWN

When our son, Luke Edward Sonnen, was born in 2013, my wife managed to get our birth announcement in Eddie Van Halen’s hands and she let him know that Luke’s middle name was in honor of Eddie. She asked him to sign a baby onesie for Luke, which she included with her note. Not only did he sign the onesie, but he also grabbed a vinyl copy of Van Halen I (the band’s debut album, released in 1978) and he and his brother Alex signed it with the inscription, “To Larissa, Matt, and Luke – All the best!” While it technically was a gift for Luke, the album proudly hangs on my office wall!

ONE PIECE OF ADVICE

For COOs looking to streamline their firm’s operations, I always advise to focus on process, not technology. Replacing a technology system will not make the firm more efficient if you apply broken processes to the new technology tool that you were hoping was going to be the easy fix for the firm’s productivity issues. For example, if advisors are complaining about your firm’s chosen trading/rebalancing software, focus on how clients are assigned to models or the tolerance bands assigned inside each model, rather than looking to replace the software.

HOBBIES

With an active 10-year-old at home, my main hobby is playing Uber driver as I shuttle Luke from one activity to another, whether that be karate, swimming, coding, or soccer. In my spare time, I enjoy reading, watching documentaries (usually about musicians), listening to classic rock, and playing guitar (poorly).

COLDSTREAM SHAREHOLDER

coldstream shareholder logoColdstream is an employee-owned financial services firm. We believe that by having broad employee ownership, we can attract and retain the industry’s best talent – in turn furthering our mission of enhancing people’s lives.

Recent Article Contributions

  • February 4, 2026

    The COO Roundtable: Episode 83

    In this episode, Matt is joined by Alli Jordan, President at LibertyFi, and Emily Wilcox, COO at Practifi, for a discussion on how leading RIAs are using innovative technology, operational excellence, and smart leadership to drive scalable growth. LibertyFi empowers growth-oriented RIAs to drive revenue and scale with the Envestnet platform, enabling seamless outsourcing of [...]

    Contributions from: Matt Sonnen
  • January 13, 2026

    The COO Roundtable: Episode 82

    In Episode 82, Matt sits down with two well-accomplished RIA operators: Hannah Koch, Director of Strategic Initiatives at Chicago-based Altair Advisers, and Joe Walker, COO of Bradley, Foster & Sargent (BFS), headquartered in Hartford, Connecticut, with nine total office locations. Altair Advisers serves individuals, families, foundations, and endowments, offering investment management, financial planning, and client [...]

    Contributions from: Matt Sonnen
  • December 3, 2025

    The COO Roundtable: Episode 81

    Matt is joined by industry veterans Jason Mirabella and Randy Lambert for Episode 81. Jason returns for his second appearance, having first joined Episode 37 nearly four years ago. Randy, the former COO of Orion, brings decades of experience after spending 30 years building and scaling one of the industry’s leading organizations. Now, Jason and Randy [...]

    Contributions from: Matt Sonnen
Secret Link