State retirement profile · Form 5500
According to DOL Form 5500 filings (plan year 2024), employer-sponsored 401(k), pension, and other retirement plans headquartered in Massachusetts report the totals below.
Data updated 2026-08-25
$432.5B across 4,265 plans
According to DOL Form 5500 filings (plan year 2024), Massachusetts has 4,265 employer-sponsored retirement plans holding $432.5B in total assets for 2,808,585 participants, ranking 11th nationally by plan assets, with 76% structured as 401(k)s and an average of $101M per plan.
The state in one line
Massachusetts hosts 4,265 employer-sponsored retirement plans holding $432.5B for 2,808,585 participants, the 11th-largest state by plan assets.
Massachusetts: 4,265 employer-sponsored plans (3,226 401(k)), $432.5B aggregate assets, 2,808,585 participants. Average plan: $101M; largest is Fidelity Retirement Savings Plan at $34.2B. Leading sector by assets: Finance & Insurance (22%). These figures aggregate the 4,265 Form 5500 filings Massachusetts sponsors submitted for plan year 2024, counted by sponsor headquarters rather than participant residence; a plan administered in Massachusetts can cover workers across several states, and the methodology page details that HQ-vs-residence distinction. DOL Form 5500 methodology + HQ-vs-residence caveats →
Among plans headquartered here, Finance & Insurance accounts for $95.2B across 383 filings, ahead of Healthcare & Social Assistance at $72.2B. Sector mix is a Form 5500-derived signal: it reflects where sponsors file from, not where every participant lives.
DOL Form 5500 plan year 2024
Employee Stock Ownership Plans here hold $3.5B. ESOP density is uneven across states; when the count clears a meaningful floor, the ESOP ranking and industry pages are the better drill-downs than a 401(k)-only read.
DOL Form 5500 plan year 2024
Massachusetts ranks in the upper half by plan assets (#11 of 56). Its totals are large enough for industry-mix and largest-plan concentration to matter more than the headline alone.
DOL Form 5500 plan year 2024
Massachusetts's place in the national asset distribution
All states with reported Form 5500 plan assets · plan year 2024
$432,451,143,685 Top 18% higher than 82% of 56 states with reported plan assets
Dashed line + filled bar = this entry, among states with reported plan assets.
Source U.S. Department of Labor, EBSA Form 5500 public disclosure dataset · plan year 2024
Source: U.S. Department of Labor, EBSA Form 5500 public disclosure dataset · plan year 2024.
Top sectors by Form 5500 plan assets for sponsors headquartered here (plan year 2024).
| Industry | Plans | Assets |
|---|---|---|
| Finance & Insurance | 383 | $95.2B |
| Healthcare & Social Assistance | 578 | $72.2B |
| Manufacturing | 574 | $62.2B |
| Professional & Technical Services | 949 | $55.0B |
| Educational Services | 238 | $52.2B |
States ranked adjacent to Massachusetts by total retirement plan assets.
Two DOL Form 5500-derived peer sets for Massachusetts, each a different nationwide metric so the neighborhoods are not geographic containment (the asset-ranked nearby list above stays regional).
Nearest other states by reported employer plan filings (4,265 here).
Nearest other states by aggregate plan assets ($432.5B here).
Industry-mix reading
Ways to act on Massachusetts's numbers.
Source: U.S. Department of Labor, EBSA Form 5500 public disclosure dataset. Shows the top 25 plans by total assets headquartered in Massachusetts, out of 130,145 ERISA-covered plans nationally. Plan year 2024.
Source: DOL EFAST2 filing system (efast.dol.gov) - state is the plan sponsor's headquarters state as recorded on the Form 5500 filing.
Read our methodology - how this data is sourced, computed, and verified.