Massachusetts Institute of Technology 401(k) and pension plans

Massachusetts Institute of Technology, Cambridge, MA. EIN 04-2103594. Annual reports 2009–2025.

Massachusetts Institute of Technology has 2 active retirement plans on file. The largest is the Massachusetts Institute of Technology Supplemental 401(k) Plan, with 27,513 participants and $8.9 billion in assets in 2025.

Active plans: 2
Participants: 57,724
Plan assets: $14.6 billion
Administered by: Hedgeserve Cayman
Plans on file: 2
Industry: Education

All 2 plans

Active plans first

Massachusetts Institute of Technology Supplemental 401(k) Plan

401(k)Active

Active. The plan filed its annual report for the 2025 plan year.

Plan number: 005Employer EIN 04-2103594
Participants (2025): 27,513
Net assets (2025): $8.9 billion
Last listed recordkeeper: Fidelity2009–2019
Plan administrator: Massachusetts Institute of Technology
77 Massachusetts Avenue NE49 3142
Cambridge, MA 02139
(617) 253-2734As filed for 2025
In effect since: January 1, 1985

Earlier plan names: MIT Supplemental 401(k) Plan.

Year by year, 2009 to 2025

Plan year	Participants	Net assets	Recordkeeper
2025	27,513	$8.9 billion	not listed
2024	27,457	$7.7 billion	not listed
2023	26,851	$6.8 billion	not listed
2022	25,951	$5.8 billion	not listed
2021	24,972	$7.1 billion	not listed
2020	24,537	$6.3 billion	not listed
2019	24,088	$5.5 billion	Fidelity
2018	23,288	$4.5 billion	Fidelity
2017	22,472	$4.8 billion	Fidelity
2016	21,841	$4.1 billion	Fidelity
2015	21,153	$3.8 billion	Fidelity
2014	20,325	$3.8 billion	Fidelity
2013	19,582	$3.6 billion	Fidelity
2012	19,170	$3.1 billion	Fidelity
2011	19,216	$2.8 billion	Fidelity
2010	18,751	$2.8 billion	Fidelity
2009	18,668	$2.5 billion	Fidelity

Massachusetts Institute of Technology Basic Retirement Plan

Cash balance pensionActive

Active. The plan filed its annual report for the 2024 plan year.

Plan number: 002Employer EIN 04-2103594
Participants (2024): 30,211
Net assets (2024): $5.7 billion
Administered by: Hedgeserve CaymanEarlier: Northeast Retirement Services (2017–2023), Excellerate Hro (2009)
Plan administrator: Massachusetts Institute of Technology
77 Massachusetts Avenue, NE49-3142
Cambridge, MA 02139
(617) 253-2734As filed for 2024
In effect since: September 1, 1926

Earlier plan names: MIT Basic Retirement Plan.

Year by year, 2009 to 2024

Plan year	Participants	Net assets	Recordkeeper
2024	30,211	$5.7 billion	Hedgeserve Cayman
2023	29,372	$5.3 billion	Northeast Retirement Services
2022	28,573	$5.2 billion	Northeast Retirement Services
2021	28,125	$6.4 billion	Northeast Retirement Services
2020	28,135	$5.6 billion	Northeast Retirement Services
2019	27,664	$4.2 billion	Northeast Retirement Services
2018	26,899	$3.7 billion	Northeast Retirement Services
2017	26,459	$3.8 billion	Northeast Retirement Services
2016	25,888	$3.4 billion	not listed
2015	26,399	$3.3 billion	not listed
2014	26,344	$3.2 billion	not listed
2013	25,782	$3.0 billion	not listed
2012	25,550	$2.6 billion	not listed
2011	24,987	$2.5 billion	not listed
2010	23,409	$2.5 billion	not listed
2009	22,510	$2.4 billion	Excellerate Hro

If you had money in one of these plans

Call Hedgeserve Cayman, which runs the Massachusetts Institute of Technology Basic Retirement Plan. With your Social Security number and the plan name, it can tell you whether you still have a balance and, if not, where it went.
Or call the plan administrator listed on the plan below ((617) 253-2734). That number was filed for 2025; ask for the benefits or retirement plan office.
Still stuck? The Department of Labor's benefits advisers help for free: askebsa.dol.gov or 1-866-444-3272. Never pay anyone to find your own money.

What these numbers are

They come from the Form 5500 annual reports each plan files with the Department of Labor, as the plan filed them. A plan year is usually a calendar year.
Participants counts everyone in the plan at year end: current employees, former employees who still have a balance or a pension coming, and retirees or beneficiaries being paid.
The recordkeeper is the service provider whose Schedule C entry says it keeps the plan's records. Small plans do not file Schedule C, so some plans show none.
We cannot see anyone's account. Only the plan or its recordkeeper can tell you your balance.

Sources: U.S. Department of Labor, Form 5500 datasets and PBGC trusteed plans. How we read them.

All 2 plans

Massachusetts Institute of Technology Supplemental 401(k) Plan

Massachusetts Institute of Technology Basic Retirement Plan

If you had money in one of these plans

What these numbers are

Other education employers in MA