Connecticut 401(k) plans
828
Large 401(k) plans headquartered in Connecticut are in 401(k) Monitor’s published set, holding $191.6B in total, led on headcount by RTX Savings Plan with 123,327 active participants. Computed from DOL Form 5500 filings, plan years 2021–2025.
State means the sponsor’s address on the filing, not where employees work. The figures above read all 828 of the form-year-2024 DOL EFAST2 filings from Connecticut, so they are every plan of that size filed from the state; 44 of them have a page of their own here. A plan with fewer than 100 participants files a shorter form and is not in this data at all.
40 of the biggest 401(k) plans headquartered in Connecticut
Every Connecticut plan page, by size
The table above is the top of the list. These 2 pages hold the 44 published plan pages from Connecticut, out of 828 filings of that kind in the data, split by how many people are in them, each ranked by active participants.
- 100 to 499 participants · 4 plans
- 5,000 or more participants · 40 plans
401(k) fees in Connecticut vs the national median
| Connecticut medianAcross the 789 Connecticut plans in our set with usable fee data. | $116.34 per participant |
|---|---|
| National medianAcross 54,782 published plans with usable fee data. | $122.17 per participant |
| Difference | $5.83 below the national median |
Plan-paid means fees the plan itself reports on Schedule H; many employers pay providers directly, which a filing reports as $0. How to judge your own plan: are your 401(k) fees high?
Connecticut employers with a match dossier
These Connecticut-headquartered plans also file an SEC Form 11-K, so the employer’s match formula, vesting and eligibility are extracted on a company page.
- Eversource Energy 401(k) match
Eversource 401(k) Plan
- Linde plc 401(k) match
Linde Retirement Savings Plan
- TEREX CORP 401(k) match
Terex Corporation And Affiliates 401(k) Retirement Savings Plan
- The Hartford Insurance Group, Inc. 401(k) match
The Hartford Investment And Savings Plan
Useful links
- All states
Plan counts, fees and largest plans, state by state.
- The largest 401(k) plans in the US
The national ranking these state tables are drawn from.
- Average 401(k) fees by plan size
Fees depend on plan size more than on state.
Cite: 401(k) Monitor, “Connecticut 401(k) plans: largest plans and fees”, computed from DOL EFAST2 Form 5500 bulk data, plan years 2021–2025, published set of 57,824 plans, data as of July 28, 2026.
