Other · DOL Form 5500 · 2023

Mount Auburn Hospital Retirement Plan

Data updated 2026-08-11

$588M
Total assets
2,781
Participants
98th
Percentile by assets
$211,574
Avg per participant
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Official DOL plan name: The Retirementplus Retirement Plan for Employees of Mount Auburn · Sponsored by Mount Auburn Hospital · Massachusetts · Healthcare & Social Assistance

$588M in assets, 2,781 participants

Mount Auburn Hospital's The Retirementplus Retirement Plan for Employees of Mount Auburn reported $588M in total assets and 2,781 participants in its 2023 DOL Form 5500 filing, ranking in the 98th 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.

  • 98th percentile by assets (of 127,072 plans)
  • #17,306 in Healthcare & Social Assistance (17,684 peers)

Coverage in Massachusetts

The Retirementplus Retirement Plan for Employees of Mount Auburn covers 2,781 participants in Massachusetts, 4.2x the typical Massachusetts plan (state average ~659 per filing). Assets: $588M.

$588M
total plan assets (2023 EOY)
2,781
covered participants
98th
percentile by assets (of 127,072 plans)
$211,574
avg assets per participant

Where The Retirementplus Retirement Plan for Employees of Mount Auburn sits by total assets

The Retirementplus Retirement Plan for Employees of Mount Auburn vs every filed plan by assets

End-of-year total assets · plan year 2023 · DOL Form 5500

$588,386,459 Top 2% higher than 98% of 127,068 filed plans

This plan $0 $2,010,000,000 every filed plan with reported assets, bucketed by value

Dashed line + filled bar = this entry, among filed plans.

Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2023

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • The Retirementplus Retirement Plan for Employees of Mount Auburn reported net income rose from $46M in the plan year 2022 filing to $84M in the plan year 2023 filing.
  • The Retirementplus Retirement Plan for Employees of Mount Auburn reported participants rose from 2,146 in the plan year 2022 filing to 2,781 in the plan year 2023 filing.
  • The Retirementplus Retirement Plan for Employees of Mount Auburn end-of-year assets rose from $505M in the plan year 2022 filing to $588M in the plan year 2023 filing.

See the national 2022→2023 release diff →

Participants vs Massachusetts filers

In Massachusetts, the average filing covers about 659 participants across 4,265 plans. The Retirementplus Retirement Plan for Employees of Mount Auburn reports 2,781 participants - 4.2x that state average ($588M EOY assets).

Massachusetts filing particulars

Total Assets (Beginning of Year)$505M
Net Assets (End of Year)$588M
Net Income$84M
Employer EIN042103606
Plan Effective Date1990-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Mount Auburn Hospital)

$-200M$0M$200M$400M$600M$800M 202220232024 $505M $0M ▼ -100.0%
Total plan assets by year, all Mount Auburn Hospital plans on file
Year Plans Participants Total Assets
2022 1 2,146 $505M
2023 1 2,781 $588M
2024 1 2,762 N/A

Nearby Other Plans in Massachusetts

Peer Other plans, same state, same plan type, ranked by total assets.

The Retirementplus Retirement Plan for Employees of Mount Auburn vs. nearby Other plans in Massachusetts, assets vs. participants

The Retirementplus Retirement Plan for Employees of Mount Auburn vs. nearby Other plans in Massachusetts, assets vs. participants Scatter plot of 6 data points. 0500010000150002000025000 012345 Total assets ($B) Participants The Retirementplus R…The Mitre Corporatio…Harvard University T…Boston University Re…Beth Israel Deacones…Northeastern Univers…
The Retirementplus Retirement Plan for Employees of Mount Auburn vs. nearby Other plans in Massachusetts, assets vs. participants

Similar-Sized Other Plans Nationally

Other plans in other states closest to The Retirementplus Retirement Plan for Employees of Mount Auburn by total assets, not by location.

Frequently Asked Questions

How did The Retirementplus Retirement Plan for Employees of Mount Auburn assets move in 2023?
The Retirementplus Retirement Plan for Employees of Mount Auburn grew sharply - up 16.6% during 2023, from $505M to $588M. Reported net income was $84M.
Where does The Retirementplus Retirement Plan for Employees of Mount Auburn rank by assets among Form 5500 filers?
The Retirementplus Retirement Plan for Employees of Mount Auburn ranks in the 98th percentile by end-of-year assets among 127,072 plans that reported assets for plan year 2023 (in the top 5% of all filed plans by assets).
Which Other plans are similar in size to The Retirementplus Retirement Plan for Employees of Mount Auburn?
Among Other plans in other states, the closest by assets is Iaicu Multiple Employer Plan in IA ($593M, 2,396 participants).

Next read for The Retirementplus Retirement Plan for E…

Filing takeaways

Ways to act on The Retirementplus Retirement Plan for Employees of Mount Auburn's numbers.

  • By total assets, The Retirementplus Retirement Plan for Employees of Mount Auburn ranks in the top 5% of all filed plans by assets. See the largest plans
  • Compare it side-by-side against 3 similar Other plans in Massachusetts. Compare plans