401(k) · DOL Form 5500 · 2024

Southwest Gas Corporation 401(k) Plan

Data updated 2026-08-25

$600M
Total assets Above avg plan size
2,387
Participants Above avg headcount
98th
Percentile by assets National rank
$251,333
Avg per participant Above avg balance/head
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Official DOL plan name: Southwest Gas Corporation Employees' Investment Plan · Sponsored by Southwest Gas Corporation · Nevada · Utilities

$600M in assets, 2,387 participants

Southwest Gas Corporation's Southwest Gas Corporation Employees' Investment Plan reported $600M in total assets and 2,387 participants in its 2024 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.

  • #603 in Utilities (732 peers)

Coverage in Nevada

Southwest Gas Corporation Employees' Investment Plan covers 2,387 participants in Nevada, 3.8x the typical Nevada plan (state average ~636 per filing). Assets: $600M.

#603
in Utilities (732 peers)
+12.7%
assets growth YoY
6.0×
vs typical plan assets (national mean)

Southwest Gas Corporation Employees' Investment Plan's outsized position by total assets

Southwest Gas Corporation Employees' Investment Plan vs every filed plan by assets

End-of-year total assets · plan year 2024 · DOL Form 5500

$599,930,744 Top 2% higher than 98% of 123,620 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 2024

Southwest Gas Corporation Employees' Investment Plan's large-plan peer group by participant headcount

Plan-year 2024 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Southwest Gas Corporation Employees' Investment Plan lands in the large band (2,387 participants).

What changed between DOL Form 5500 filings

plan year 2023 → plan year 2024

  • Southwest Gas Corporation Employees' Investment Plan end-of-year assets rose from $532M in the plan year 2023 filing to $600M in the plan year 2024 filing.
  • Southwest Gas Corporation Employees' Investment Plan reported participants rose from 2,366 in the plan year 2023 filing to 2,387 in the plan year 2024 filing.
  • Southwest Gas Corporation Employees' Investment Plan reported net income rose from $67M in the plan year 2023 filing to $68M in the plan year 2024 filing.

See the national 2023→2024 release diff →

Form 5500 schedule snapshot

Filing strip 880085720 · Southwest Gas Corporation PY 2024 · 401(k)

Southwest Gas Corporation Employees' Investment Plan · $600M · 2,387 · 98th

  • 5500 $600M
  • ASSETS 2,387
  • PCT 98th
  • EIN 401(k)
  • RANK near Ascension Healthcare 401(k) Retirement Savings Plan
  • PHOTO ind #603

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 Utilities retirement plans → · Plans in Nevada →

Southwest Gas Corporation Employees' Investment Plan in the asset neighbourhood

Sephora Retirement Plan$600MNational Indemnity Company Employee Retirement and Savings PlanNational Indemnity Company E…$600MAscension Healthcare 401(k) Retirement Savings PlanAscension Healthcare 401(k) …$600MSouthwest Gas Corporation Employees' Investment PlanSouthwest Gas Corporation Em…$600MThe Boston College 401(k) Retirement Plan IIThe Boston College 401(k) Re…$600M
End-of-year total assets ($M) among Southwest Gas Corporation Employees' Investment Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2024.

Nevada filing particulars

Total Assets (Beginning of Year)$532M
Net Assets (End of Year)$600M
Net Income$68M
Employer EIN880085720
Plan Effective Date1965-04-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Southwest Gas Corporation)

Sponsor-wide plan assets over time

All Southwest Gas Corporation plans reported in each filing year

Latest sponsor-wide plan assets
$1.8B 9.946744738475166% vs 2022
2024 filing year
$1.5B$1.6B$1.7B$1.8B 202220232024 $1.61B $1.78B ▲ +10.6%
Year Plans Participants Total Assets
2022 2 4,473 $1.6B
2023 2 4,386 $1.7B
2024 2 4,255 $1.8B

Nearby 401(k) Plans in Nevada

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

Southwest Gas Corporation Employees' Investment Plan vs. nearby 401(k) plans in Nevada, assets vs. participants Scatter plot of 6 data points. 01000020000300004000050000 0.511.522.5 Total assets ($B) Participants Southwest Gas Corporation Employees' Investment Plan, Total assets ($B): 0.599930744 · Participants: 2387Southwest Gas Corporation Employees' Investment PlanThe Mgm Resorts 401(k) Savings Plan, Total assets ($B): 2.241956368 · Participants: 37719The Mgm Resorts 401(k) Savings PlanCaesars Entertainment, Inc 401(k) Plan, Total assets ($B): 1.939824866 · Participants: 46859Caesars Entertainment, Inc 401(k) PlanBarrick Retirement Plan, Total assets ($B): 1.341794728 · Participants: 7327Barrick Retirement PlanEighth District Electrical Pension Fund Annuity Plan, Total assets ($B): 1.127663414 · Participants: 21516Eighth District Electrical Pension Fund Annuity PlanNv Energy 401(k) Plan, Total assets ($B): 1.125514142 · Participants: 2669Nv Energy 401(k) Plan
Southwest Gas Corporation Employees' Investment Plan vs. nearby 401(k) plans in Nevada, assets vs. participants
Compare Southwest Gas Corporation Employees' Investment Plan side-by-side with 3 peers →

Southwest Gas Corporation Employees' Investment Plan's out-of-state 401(k) peers by assets and headcount

Outside Nevada, the nearest 401(k) by assets is Ascension Healthcare 401(k) Retirement Savings Plan in MO ($600M); by covered participants it is Build-a-Bear Workshop, Inc. Employee Savings Trust in MO (2,387 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($600M here).

Similar participant headcount

Nearest other-state filings by covered participants (2,387 participants); asset peers above are excluded.

DOL Form 5500 plan year 2024. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Southwest Gas Corporation Employees' Investment Plan assets move in 2024? ▼
Southwest Gas Corporation Employees' Investment Plan grew at a solid clip - up 12.7% during 2024, from $532M to $600M. Reported net income was $68M.
How have Southwest Gas Corporation plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Southwest Gas Corporation's sponsor-wide assets grew 9.9%, from $1.6B to $1.8B.
Where does Southwest Gas Corporation Employees' Investment Plan rank by assets among Form 5500 filers? ▼
Southwest Gas Corporation Employees' Investment Plan ranks in the 98th percentile by end-of-year assets among 123,622 plans that reported assets for plan year 2024 (in the top 5% of all filed plans by assets).
Which 401(k) plans are similar in size to Southwest Gas Corporation Employees' Investment Plan? ▼
Among 401(k) plans in other states, the closest by assets is Ascension Healthcare 401(k) Retirement Savings Plan in MO ($600M, 1,700 participants).
Which 401(k) plans cover a similar participant headcount to Southwest Gas Corporation Employees' Investment Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Build-a-Bear Workshop, Inc. Employee Savings Trust in MO (2,387 participants, $44M in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2024.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 880085720.

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.