State Street Corporation has announced that Mariner, a U.S. private equity-backed financial services firm, will implement the Charles River wealth management solution, a State Street company, to optimize its operations and support its long-term growth strategy, including its goal of expanding to 5,000 advisors.
According to the company, the objective of the implementation is to help Mariner operate more efficiently across its current network of more than 2,080 advisors, while establishing a centralized and scalable technology foundation designed to sustain continued growth without adding operational complexity or disrupting the advisor or client experience.
“Mariner is a rapidly growing wealth management firm and we are delighted to support it with a modern, centralized platform that strengthens the advisor experience. The Charles River platform is designed for firms operating at scale and helps them serve thousands of advisors on a single, flexible foundation built to support disciplined and consistent growth,” said John Plansky, Global Head of State Street Wealth Services.
In this regard, Mariner plans to leverage Charles River’s centralized technology to enhance portfolio management, advisor workflows, trading operations, custody data integration, and enterprise data management. The solution is designed to elevate operational efficiency, reinforce consistency across the firm, and enable advisors to devote more time to client relationships.
According to Marty Bicknell, CEO and President of Mariner, “this partnership reflects how we envision the next chapter of our company. It is designed to support our journey toward 5,000 advisors and beyond, while enabling a more unified and modern experience across the firm as we continue to grow.”
For more than 15 years, Charles River has provided integrated wealth management technology services to large global asset managers, aimed at optimizing operations, managing complexity, and supporting innovation in investment and advisory workflows.
“The centralized Charles River platform provides advisors with the tools they need to manage portfolios, operate efficiently, and work seamlessly across custodians and investment programs, including UMA, SMA, Rep-as-PM, and fund wraps. It is designed to reduce operational friction while giving firms the flexibility to grow on a single integrated platform,” said Swati Verma, Head of Wealth and Advisor Platforms at Charles River.



