401(k) · DOL Form 5500 · 2023
Plymouth Rock Assurance Corporation 401(k) Plan
Data updated 2026-08-11
- $450M
- Total assets
- 1,783
- Participants
- 97th
- Percentile by assets
- $252,601
- Avg per participant
Official DOL plan name: The Plymouth Rock Companies Savings and Investment Plan · Sponsored by Plymouth Rock Assurance Corporation · Massachusetts · Finance & Insurance
$450M in assets, 1,783 participants
Plymouth Rock Assurance Corporation's The Plymouth Rock Companies Savings and Investment Plan reported $450M in total assets and 1,783 participants in its 2023 DOL Form 5500 filing, ranking in the 97th percentile by assets among filed plans. Figures are as reported by the plan sponsor to the Department of Labor, not audited or endorsed by PlainRetire.
- 97th percentile by assets (of 127,072 plans)
- #8,440 in Finance & Insurance (8,869 peers)
Coverage in Massachusetts
The Plymouth Rock Companies Savings and Investment Plan covers 1,783 participants in Massachusetts, 2.7x the typical Massachusetts plan (state average ~659 per filing). Assets: $450M.
- $450M
- total plan assets (2023 EOY)
- 1,783
- covered participants
- 97th
- percentile by assets (of 127,072 plans)
- $252,601
- avg assets per participant
What changed between DOL Form 5500 filings
plan year 2022 → plan year 2023
- The Plymouth Rock Companies Savings and Investment Plan reported net income rose from -$71M in the plan year 2022 filing to $67M in the plan year 2023 filing.
- The Plymouth Rock Companies Savings and Investment Plan end-of-year assets rose from $383M in the plan year 2022 filing to $450M in the plan year 2023 filing.
- The Plymouth Rock Companies Savings and Investment Plan reported participants fell from 1,818 in the plan year 2022 filing to 1,783 in the plan year 2023 filing.
Participants vs Massachusetts filers
In Massachusetts, the average filing covers about 659 participants across 4,265 plans. The Plymouth Rock Companies Savings and Investment Plan reports 1,783 participants - 2.7x that state average ($450M EOY assets).
Massachusetts filing particulars
| Total Assets (Beginning of Year) | $383M |
|---|---|
| Net Assets (End of Year) | $450M |
| Net Income | $67M |
| Employer EIN | 042800590 |
| Plan Effective Date | 1986-01-01 |
| Filing Status | FILING RECEIVED |
Sponsor Plan History (Plymouth Rock Assurance Corporation)
| Year | Plans | Participants | Total Assets |
|---|---|---|---|
| 2022 | 1 | 1,818 | $383M |
| 2023 | 1 | 1,783 | $450M |
| 2024 | 1 | 1,890 | $505M |
Nearby 401(k) Plans in Massachusetts
Peer 401(k) plans, same state, same plan type, ranked by total assets.
The Plymouth Rock Companies Savings and Investment Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants
- Fidelity Retirement Savings Plan $28.6B · 62,289
- Liberty Mutual 401(k) Plan $10.6B · 37,052
- Massachusetts Institute of Technology Supplemental 401(k) Plan $6.8B · 14,094
- Boston Scientific Corporation 401(k) Retirement Savings Plan $5.8B · 19,881
- Philips North America 401(k) Plan $5.8B · 19,120
Similar-Sized 401(k) Plans Nationally
401(k) plans in other states closest to The Plymouth Rock Companies Savings and Investment Plan by total assets, not by location.
- K&l Gates 401(k) Plan Beta (PA) $450M · 1,394
- Space Exploration Technologies 401(k) Plan (CA) $451M · 11,701
- Dewberry 401(k)/Profit-Sharing Plan (VA) $451M · 2,460
- The Christ Hospital 403(b) Retirement Savings Plan (OH) $451M · 6,885
Frequently Asked Questions
How did The Plymouth Rock Companies Savings and Investment Plan assets move in 2023? ▼
How have Plymouth Rock Assurance Corporation plan assets changed over time? ▼
Where does The Plymouth Rock Companies Savings and Investment Plan rank by assets among Form 5500 filers? ▼
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Filing takeaways
Ways to act on The Plymouth Rock Companies Savings and Investment Plan's numbers.
- By total assets, The Plymouth Rock Companies Savings and Investment Plan ranks in the top 5% of all filed plans by assets. See the largest plans
- Compare it side-by-side against 3 similar 401(k) plans in Massachusetts. Compare plans
- Plymouth Rock Assurance Corporation's sponsor-wide assets have grown 31.8% since 2022 across 3 plan years on file. More Finance & Insurance plans