401(k) · DOL Form 5500 · 2023

Builders Firstsource, Inc. 401(k) Plan

Data updated 2026-08-25

$1.6B
Total assets Very large vs avg
30,742
Participants Very large workforce
99th
Percentile by assets National rank
$50,934
Avg per participant Low balance/head
PlainRetire home → About this data RSS: change history

Official DOL plan name: Builders Firstsource 401(k) Savings Plan · Sponsored by Builders Firstsource, Inc. · Massachusetts · Wholesale Trade

$1.6B in assets, 30,742 participants

Builders Firstsource, Inc.'s Builders Firstsource 401(k) Savings Plan reported $1.6B in total assets and 30,742 participants in its 2023 DOL Form 5500 filing, ranking in the 99th 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.

  • #6,277 in Wholesale Trade (6,309 peers)

Coverage in Massachusetts

Builders Firstsource 401(k) Savings Plan covers 30,742 participants in Massachusetts, 47x the typical Massachusetts plan (state average ~659 per filing). Assets: $1.6B.

#6,277
in Wholesale Trade (6,309 peers)
+17.3%
assets growth YoY
16×
vs typical plan assets (national mean)

Builders Firstsource 401(k) Savings Plan's outsized position by total assets

Builders Firstsource 401(k) Savings Plan vs every filed plan by assets

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

$1,565,812,664 Top 1% higher than 99% of 127,068 filed plans

This plan $0 $2,050,000,000 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

Builders Firstsource 401(k) Savings Plan's mega-plan peer group by participant headcount

Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Builders Firstsource 401(k) Savings Plan is a mega filing (30,742 participants), the rightmost band on the breakdown.

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Builders Firstsource 401(k) Savings Plan reported net income rose from -$198M in the plan year 2022 filing to $212M in the plan year 2023 filing.
  • Builders Firstsource 401(k) Savings Plan reported participants rose from 17,325 in the plan year 2022 filing to 30,742 in the plan year 2023 filing.
  • Builders Firstsource 401(k) Savings Plan end-of-year assets rose from $1.3B in the plan year 2022 filing to $1.6B in the plan year 2023 filing.

See the national 2022→2023 release diff →

EBSA filing schedule strip

Filing strip 522084569 · Builders Firstsource, Inc. PY 2023 · 401(k)

Builders Firstsource 401(k) Savings Plan · $1.6B · 30,742 · 99th

  • PHOTO $1.6B
  • IND 30,742
  • EOY 99th
  • 5500 401(k)
  • ASSETS near Xylem Retirement Savings Plan
  • PCT ind #6277

Stamps derive from this plan's Form 5500 line items (assets, participants, type, EIN, cohort placement) - not a quality rating of the sponsor. Read with Wholesale Trade retirement plans → · Plans in Massachusetts →

Builders Firstsource 401(k) Savings Plan in the asset neighbourhood

Builders Firstsource 401(k) Savings PlanBuilders Firstsource 401(k) …$1.6BEmcor Group, Inc. 401(k) Savings PlanEmcor Group, Inc. 401(k) Sav…$1.6BThe Sci 401(k) Retirement Savings PlanThe Sci 401(k) Retirement Sa…$1.6BXylem Retirement Savings Plan$1.6BS.C. Johnson & Son, Inc. Employees Deferred Profit and Savings PlanS.C. Johnson & Son, Inc. Emp…$1.6B
End-of-year total assets ($B) among Builders Firstsource 401(k) Savings Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Massachusetts filing particulars

Total Assets (Beginning of Year)$1.3B
Net Assets (End of Year)$1.6B
Net Income$212M
Employer EIN522084569
Plan Effective Date1998-07-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Builders Firstsource, Inc.)

Sponsor-wide plan assets over time

All Builders Firstsource, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$1.7B 29.316985999103935% vs 2022
2024 filing year
$1.2B$1.4B$1.6B$1.8B 202220232024 $1.34B $1.73B ▲ +29.1%
Year Plans Participants Total Assets
2022 1 17,325 $1.3B
2023 1 30,742 $1.6B
2024 1 29,871 $1.7B

Nearby 401(k) Plans in Massachusetts

Peer 401(k) plans, same state, same plan type, ranked by total assets.

Builders Firstsource 401(k) Savings Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants Scatter plot of 6 data points. 020000400006000080000 010203040 Total assets ($B) Participants Builders Firstsource 401(k) Savings Plan, Total assets ($B): 1.565812664 · Participants: 30742Builders Firstsource 401(k) Savings PlanFidelity Retirement Savings Plan, Total assets ($B): 28.649852331 · Participants: 62289Fidelity Retirement Savings PlanLiberty Mutual 401(k) Plan, Total assets ($B): 10.556596852 · Participants: 37052Liberty Mutual 401(k) PlanMassachusetts Institute of Technology Supplemental 401(k) Plan, Total assets ($B): 6.829912863 · Participants: 14094Massachusetts Institute of Technology Supplemental 401(k) PlanBoston Scientific Corporation 401(k) Retirement Savings Plan, Total assets ($B): 5.786107181 · Participants: 19881Boston Scientific Corporation 401(k) Retirement Savings PlanPhilips North America 401(k) Plan, Total assets ($B): 5.779286156 · Participants: 19120Philips North America 401(k) Plan
Builders Firstsource 401(k) Savings Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants
Compare Builders Firstsource 401(k) Savings Plan side-by-side with 3 peers →

Scale composition for Builders Firstsource 401(k) Savings Plan

Builders Firstsource 401(k) Savings Plan reports $1.6B in end-of-year assets across 30,742 participants (0.013% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.033% of 93,925,755 covered participants) - about $50,934 per participant (37% of the national average assets-per-participant) . Net income for plan year 2023 was $212M.

This plan identity (EIN 522084569, plan #001) has 3 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $1.3B to $1.7B (+29.3%) while covered participants moved from 17,325 to 29,871 . Single-year sparse filers cannot show that trail.

Plan year Participants EOY assets Filing
2022 17,325 $1.3B Open filing
2023 30,742 $1.6B This page
2024 · index core 29,871 $1.7B Open filing

The same sponsor also keeps 1 other index-core plan on PlainRetire:

Builders Firstsource 401(k) Savings Plan's out-of-state 401(k) peers by assets and headcount

Outside Massachusetts, the nearest 401(k) by assets is Xylem Retirement Savings Plan in NY ($1.6B); by covered participants it is Ferguson Enterprises, LLC, 401(k) Retirement Savings Plan in VA (30,746 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($1.6B here).

Similar participant headcount

Nearest other-state filings by covered participants (30,742 participants); asset peers above are excluded.

DOL Form 5500 plan year 2023. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Builders Firstsource 401(k) Savings Plan assets move in 2023? ▼
Builders Firstsource 401(k) Savings Plan grew sharply - up 17.3% during 2023, from $1.3B to $1.6B. Reported net income was $212M.
How have Builders Firstsource, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Builders Firstsource, Inc.'s sponsor-wide assets grew 29.3%, from $1.3B to $1.7B.
Where does Builders Firstsource 401(k) Savings Plan rank by assets among Form 5500 filers? ▼
Builders Firstsource 401(k) Savings Plan ranks in the 99th percentile by end-of-year assets among 127,072 plans that reported assets for plan year 2023 (among the largest 1% of all filed plans).
Which 401(k) plans are similar in size to Builders Firstsource 401(k) Savings Plan? ▼
Among 401(k) plans in other states, the closest by assets is Xylem Retirement Savings Plan in NY ($1.6B, 4,636 participants).
Which 401(k) plans cover a similar participant headcount to Builders Firstsource 401(k) Savings Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Ferguson Enterprises, LLC, 401(k) Retirement Savings Plan in VA (30,746 participants, $3.2B in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2023.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 522084569.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from U.S. Department of Labor Form 5500 filings (EBSA). See our methodology for details.