Merrill Lynch vs Morgan Stanley

Comparison Details

Merrill Lynch vs Morgan Stanley: retirement plan advisor comparison Both Merrill Lynch and Morgan Stanley are large, New York–headquartered financial services firms that advise employers on workplace retirement plans. Each can deliver ERISA fiduciary support through 3(21) co-fiduciary investment advice and 3(38) discretionary investment management, along with plan design consulting and participant advice . The practical differences often come down to scale, plan-type breadth, and how tightly the retirement plan offering integrates with the firm’s broader banking/wealth platform. Side-by-side snapshot Founded: Merrill Lynch (1914) vs Morgan Stanley (1935) Employees: Merrill Lynch (~30,000) vs Morgan Stanley (~75,000) HQ: Both in New York, NY Plans supported: Merrill Lynch: 401(k), 403(b), defined benefit Morgan Stanley: 401(k), 403(b), defined benefit, ESOP, plus small-business options (Solo 401(k), SEP IRA, SIMPLE IRA) Fiduciary services: Both offer 3(21) and 3(38), participant advice, and plan design Scale, reach, and resources Merrill Lynch Merrill Lynch is a wholly owned subsidiary of Bank of America , which can matter for sponsors that value a unified relationship across corporate banking, treasury services, and employee benefits. Merrill’s retirement plan business highlights national coverage and deep experience with employer plans, including complex needs like multi-plan structures and defined benefit arrangements. In available client stats, Merrill reports approximately 40,000 401(k) clients and about $350B in 401(k) assets under management (2024), signaling a large installed base in the workplace market. Morgan Stanley Morgan Stanley operates at very large institutional scale, with reported total assets under management of about $9.3T (2026). For plan sponsors, the differentiator is often the ability to pair plan-level fiduciary services with workplace financial solutions (e.g., through Morgan Stanley at Work) and connect participant advice to the firm’s broader wealth platform. Morgan Stanley’s footprint across major metro areas supports national service models for multi-location employers. Plan type breadth and “best fit” sponsor profiles When Merrill Lynch may be a better fit Mid-market to large employers that want a retirement plan advisor with a long track record and broad national coverage. Sponsors that value the Bank of America ecosystem —for example, aligning corporate banking relationships with retirement plan governance and participant support. Committees seeking established support for 401(k), 403(b), and defined benefit plans under one advisory umbrella. When Morgan Stanley may be a better fit Sponsors that want a single firm to coordinate plan fiduciary services + participant advice with broader workplace financial tools. Organizations that need coverage beyond core DC plans—such as ESOP support—or business owners exploring Solo 401(k), SEP IRA, or SIMPLE IRA options. Committees prioritizing a provider with extremely large overall AUM and broad institutional capabilities. Pricing and how to evaluate proposals Neither provider lists standard pricing here, which is common for large advisory firms where fees depend on plan size, service scope, and fiduciary role (3(21) vs 3(38)). When comparing proposals, ask each firm to itemize: Advisor fee schedule (basis points and/or per-participant) and what’s included Whether services are delivered as 3(21) or 3(38) , and what discretion is assumed Investment menu construction approach (open architecture vs platform constraints) Participant advice model (education vs managed accounts vs 1:1 advice) Any additional costs tied to recordkeeping or affiliated services Bottom line If you want a retirement plan advisor closely connected to a major banking platform and a large workplace client base, Merrill Lynch is a strong contender. If you need broader plan-type coverage (including ESOP and small-business retirement options) and want plan fiduciary services integrated with workplace financial solutions, Morgan Stanley may be the better match.