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New 401(k) plans: Colorado

401(k) plans whose sponsor is in Colorado that filed a Form 5500 or 5500-SF for plan year 2025, from the U.S. Department of Labor's public datasets (files dated 2026-09-25, filings received up to 2026-09-24). A plan counts as new when its filing is marked as the plan's first return. Most 2025 returns are due by July 31, 2026 or, with an extension, October 15, 2026, so the year's counts are still growing.

401(k) plans file their first Form 5500 after their first plan year ends, so most plans counted here started in 2025. Of the 1,824 new plans, 1,780 (98%) have a plan effective date in 2025, 23 in 2024 and 21 before 2024.

New 401(k) plans (first filing)1,824
Active participants in new plans21,230as reported on the filing
All 401(k) plans filing for 202515,251

New 401(k) plans by month the filing was received

Month receivedNew 401(k) plans
2026-0445
2026-05516
2026-06163
2026-07930
2026-0896
2026-0956

Last six months of filings received by DOL for plan year 2025. Received date, not plan start date.

By industry

Industry (NAICS)New 401(k) plansAll 401(k) plans filing
Admin & Support Services (56)69597
Agriculture (11)10131
Arts & Recreation (71)36289
Construction (23)2111,630
Education (61)42249
Finance & Insurance (52)74815
Health Care (62)2432,068
Hotels & Restaurants (72)81729
Information (51)58362
Manufacturing (31-33)66845
Other Services (81)3061,331
Professional Services (54)4053,779
Real Estate (53)50538
Retail Trade (44-45)78877
Transportation (48-49)32279
Wholesale Trade (42)37470

Industry from the sponsor's NAICS business code. Industries with fewer than 10 new plans in the state don't get their own page.

New 401(k) plans: counts only

1,824 new 401(k) plans filed a first Form 5500 or 5500-SF here. 304 of these new plans have a sponsor name that may be a person's name.

We show counts only and don't list individual plans on this site. Listing some plans would let anyone work out the rest from DOL's public files, including plans whose sponsor name may be a person's name. Individual filings can be looked up on DOL's EFAST2 search.

Source

U.S. Department of Labor, EBSA Form 5500 datasets: F_5500_2025_Latest and F_5500_SF_2025_Latest (files dated 2026-09-25). 401(k) plans are those with pension feature code 2J. Amended returns are merged, keeping the latest. Counts are row counts; nothing is estimated. Method.

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