401(k) · DOL Form 5500 · 2023

Costar Realty Information, Inc. 401(k) Plan

Data updated 2026-08-25

$616M
Total assets Above avg plan size
5,010
Participants Above avg headcount
98th
Percentile by assets National rank
$122,965
Avg per participant Near avg balance/head
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Official DOL plan name: Costar Realty Information, Inc. 401(k) Retirement Plan · Sponsored by Costar Realty Information, Inc. · District of Columbia · Real Estate

$616M in assets, 5,010 participants

Costar Realty Information, Inc.'s Costar Realty Information, Inc. 401(k) Retirement Plan reported $616M in total assets and 5,010 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.

  • #4,711 in Real Estate (4,727 peers)

Coverage in District of Columbia

Costar Realty Information, Inc. 401(k) Retirement Plan covers 5,010 participants in District of Columbia, 3.4x the typical District of Columbia plan (state average ~1,456 per filing). Assets: $616M.

#4,711
in Real Estate (4,727 peers)
+32.6%
assets growth YoY
6.2×
vs typical plan assets (national mean)

Costar Realty Information, Inc. 401(k) Retirement Plan's outsized position by total assets

Costar Realty Information, Inc. 401(k) Retirement Plan vs every filed plan by assets

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

$616,052,647 Top 2% higher than 98% 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

Costar Realty Information, Inc. 401(k) Retirement Plan's large-plan peer group by participant headcount

Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Costar Realty Information, Inc. 401(k) Retirement Plan lands in the large band (5,010 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Costar Realty Information, Inc. 401(k) Retirement Plan reported net income rose from -$68M in the plan year 2022 filing to $151M in the plan year 2023 filing.
  • Costar Realty Information, Inc. 401(k) Retirement Plan end-of-year assets rose from $465M in the plan year 2022 filing to $616M in the plan year 2023 filing.
  • Costar Realty Information, Inc. 401(k) Retirement Plan reported participants rose from 4,191 in the plan year 2022 filing to 5,010 in the plan year 2023 filing.

See the national 2022→2023 release diff →

Form 5500 schedule snapshot

Filing strip 522134617 · Costar Realty Information, Inc. PY 2023 · 401(k)

Costar Realty Information, Inc. 401(k) Retirement Plan · $616M · 5,010 · 98th

  • IND $616M
  • EOY 5,010
  • 5500 98th
  • ASSETS 401(k)
  • PCT near Edgewell Personal Care 401(k) Plan
  • EIN ind #4711

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 Real Estate retirement plans → · Plans in District of Columbia →

Costar Realty Information, Inc. 401(k) Retirement Plan in the asset neighbourhood

Costar Realty Information, Inc. 401(k) Retirement PlanCostar Realty Information, I…$616MEdgewell Personal Care 401(k) PlanEdgewell Personal Care 401(k…$616MSaint-Gobain Corporation 401(k) Plan for Hourly EmployeesSaint-Gobain Corporation 401…$616MUmb Profit Sharing and 401(k) Savings PlanUmb Profit Sharing and 401(k…$615MTeleflex 401(k) Savings Plan$615M
End-of-year total assets ($M) among Costar Realty Information, Inc. 401(k) Retirement Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

District of Columbia filing particulars

Total Assets (Beginning of Year)$465M
Net Assets (End of Year)$616M
Net Income$151M
Employer EIN522134617
Plan Effective Date1997-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Costar Realty Information, Inc.)

Sponsor-wide plan assets over time

All Costar Realty Information, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$753M 62.059067373499246% vs 2022
2024 filing year
$400M$500M$600M$700M$800M 202220232024 $465M $753M ▲ +62.1%
Year Plans Participants Total Assets
2022 1 4,191 $465M
2023 1 5,010 $616M
2024 1 5,390 $753M

Nearby 401(k) Plans in District of Columbia

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

Costar Realty Information, Inc. 401(k) Retirement Plan vs. nearby 401(k) plans in District of Columbia, assets vs. participants Scatter plot of 6 data points. 01000020000300004000050000 02468 Total assets ($B) Participants Costar Realty Information, Inc. 401(k) Retirement Plan, Total assets ($B): 0.616052647 · Participants: 5010Costar Realty Information, Inc. 401(k) Retirement PlanDanaher Corporation & Subsidiaries Savings Plan, Total assets ($B): 5.808883656 · Participants: 29441Danaher Corporation & Subsidiaries Savings PlanGeico 401(k) Savings Plan, Total assets ($B): 5.758063779 · Participants: 39034Geico 401(k) Savings PlanFederal National Mortgage Association Retirement Savings Plan for Employees, Total assets ($B): 3.918113552 · Participants: 8044Federal National Mortgage Association Retirement Savings Plan for EmployeesFinra Savings Plus Plan, Total assets ($B): 2.182175101 · Participants: 3958Finra Savings Plus PlanHogan Lovells US LLP Retirement Savings Plan, Total assets ($B): 1.63036822 · Participants: 1870Hogan Lovells US LLP Retirement Savings Plan
Costar Realty Information, Inc. 401(k) Retirement Plan vs. nearby 401(k) plans in District of Columbia, assets vs. participants
Compare Costar Realty Information, Inc. 401(k) Retirement Plan side-by-side with 3 peers →

Scale composition for Costar Realty Information, Inc. 401(k) Retirement Plan

Costar Realty Information, Inc. 401(k) Retirement Plan reports $616M in end-of-year assets across 5,010 participants (0.005% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.005% of 93,925,755 covered participants) - about $122,965 per participant (89% of the national average assets-per-participant) . Net income for plan year 2023 was $151M.

This plan identity (EIN 522134617, plan #001) has 3 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $465M to $753M (+62.1%) while covered participants moved from 4,191 to 5,390 . Single-year sparse filers cannot show that trail.

Plan year Participants EOY assets Filing
2022 4,191 $465M Open filing
2023 5,010 $616M This page
2024 · index core 5,390 $753M Open filing

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

Costar Realty Information, Inc. 401(k) Retirement Plan's out-of-state 401(k) peers by assets and headcount

Outside District of Columbia, the nearest 401(k) by assets is Edgewell Personal Care 401(k) Plan in CT ($616M); by covered participants it is Hormel Foods Corporation Tax Deferred Investment Plan a * in MN (5,009 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($616M here).

Similar participant headcount

Nearest other-state filings by covered participants (5,010 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 Costar Realty Information, Inc. 401(k) Retirement Plan assets move in 2023? ▼
Costar Realty Information, Inc. 401(k) Retirement Plan surged - up 32.6% during 2023, from $465M to $616M. Reported net income was $151M.
How have Costar Realty Information, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Costar Realty Information, Inc.'s sponsor-wide assets grew 62.1%, from $465M to $753M.
Where does Costar Realty Information, Inc. 401(k) Retirement Plan rank by assets among Form 5500 filers? ▼
Costar Realty Information, Inc. 401(k) Retirement Plan 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 401(k) plans are similar in size to Costar Realty Information, Inc. 401(k) Retirement Plan? ▼
Among 401(k) plans in other states, the closest by assets is Edgewell Personal Care 401(k) Plan in CT ($616M, 2,074 participants).
Which 401(k) plans cover a similar participant headcount to Costar Realty Information, Inc. 401(k) Retirement Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Hormel Foods Corporation Tax Deferred Investment Plan a * in MN (5,009 participants, $1.1B 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 522134617.

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.