Finding the Right RIA for Your Company's 401(k) Plan
Selecting a Registered Investment Advisor (RIA) for 401(k) plan management is one of the most consequential decisions an HR director or business owner can make. Unlike broker-dealers, RIAs operate under a fiduciary standard — they are legally required to act in the best interest of plan participants, not earn commissions on product sales.
The Scale of the RIA-Managed 401(k) Market
As of 2025, there are over 15,800 SEC-registered investment advisers in the United States, with thousands more registered at the state level. A significant and growing subset specializes in employer-sponsored retirement plans. The top firms in this space manage staggering sums: CAPTRUST alone surpassed $1 trillion in total client assets in 2025, while SageView Advisory Group manages over $250 billion across retirement plans nationwide.
Why Fiduciary Status Matters for 401(k) Plans
Under ERISA (Employee Retirement Income Security Act), plan sponsors have a fiduciary duty to prudently select and monitor plan investments. Hiring an RIA as a 3(38) investment manager or 3(21) investment advisor can help transfer or share that fiduciary liability:
- ERISA 3(38) Investment Manager
- Takes full discretionary control over plan investments. The RIA assumes fiduciary liability for investment selection and monitoring.
- ERISA 3(21) Investment Advisor
- Provides investment recommendations but the plan sponsor retains final decision-making authority and shared fiduciary responsibility.
Key Factors When Evaluating an RIA for 401(k) Management
| Factor | What to Look For |
|---|---|
| Fee Transparency | Flat fee or basis-point fee clearly disclosed; no revenue sharing or hidden 12b-1 fees |
| Plan Size Fit | Some RIAs focus on plans with $10M+ in assets; others specialize in small business plans under $5M |
| Investment Menu Design | Access to institutional share classes, index funds, and target-date fund suites |
| Participant Services | Financial wellness programs, enrollment support, and education materials |
| Regulatory Track Record | Clean Form ADV disclosures, no SEC enforcement actions |
Industry Consolidation Trends
The RIA retirement advisory space has seen significant consolidation. In 2025, Creative Planning announced its acquisition of SageView Advisory Group, combining to manage over $500 billion. Similarly, CAPTRUST has completed dozens of acquisitions to reach its $1 trillion milestone. This consolidation trend means plan sponsors now have access to larger firms with deeper resources, but smaller specialized RIAs continue to compete on personalized service and local market expertise.