401(k) · DOL Form 5500 · 2023

Southwest Gas Corporation 401(k) Plan

Data updated 2026-08-25

$532M
Total assets Above avg plan size
2,366
Participants Above avg headcount
98th
Percentile by assets National rank
$224,956
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

$532M in assets, 2,366 participants

Southwest Gas Corporation's Southwest Gas Corporation Employees' Investment Plan reported $532M in total assets and 2,366 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.

  • #595 in Utilities (721 peers)

Coverage in Nevada

Southwest Gas Corporation Employees' Investment Plan covers 2,366 participants in Nevada, 3.7x the typical Nevada plan (state average ~636 per filing). Assets: $532M.

#595
in Utilities (721 peers)
+14.5%
assets growth YoY
5.3×
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 2023 · DOL Form 5500

$532,246,936 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

Southwest Gas Corporation Employees' Investment 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. Southwest Gas Corporation Employees' Investment Plan lands in the large band (2,366 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Southwest Gas Corporation Employees' Investment Plan reported net income rose from -$126M in the plan year 2022 filing to $67M in the plan year 2023 filing.
  • Southwest Gas Corporation Employees' Investment Plan end-of-year assets rose from $465M in the plan year 2022 filing to $532M in the plan year 2023 filing.
  • Southwest Gas Corporation Employees' Investment Plan reported participants rose from 2,305 in the plan year 2022 filing to 2,366 in the plan year 2023 filing.

See the national 2022→2023 release diff →

Plan-year Form 5500 strip

Filing strip 880085720 · Southwest Gas Corporation PY 2023 · 401(k)

Southwest Gas Corporation Employees' Investment Plan · $532M · 2,366 · 98th

  • PCT $532M
  • PCT 2,366
  • PCT 98th
  • PCT 401(k)
  • PCT near Informatica LLC 401(k) Retirement Plan
  • PCT ind #595

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

Informatica LLC 401(k) Retirement PlanInformatica LLC 401(k) Retir…$532MSouthwest Gas Corporation Employees' Investment PlanSouthwest Gas Corporation Em…$532MBombardier 401(k) Savings PlanBombardier 401(k) Savings Pl…$532MThe Segal Group Profit Sharing PlanThe Segal Group Profit Shari…$532MDiebold, Incorporated 401(k) Savings PlanDiebold, Incorporated 401(k)…$532M
End-of-year total assets ($M) among Southwest Gas Corporation Employees' Investment Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Nevada filing particulars

Total Assets (Beginning of Year)$465M
Net Assets (End of Year)$532M
Net Income$67M
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. 010000200003000040000 00.511.522.5 Total assets ($B) Participants Southwest Gas Corporation Employees' Investment Plan, Total assets ($B): 0.532246936 · Participants: 2366Southwest Gas Corporation Employees' Investment PlanThe Mgm Resorts 401(k) Savings Plan, Total assets ($B): 2.01117919 · Participants: 28142The Mgm Resorts 401(k) Savings PlanCaesars Entertainment, Inc 401(k) Plan, Total assets ($B): 1.82487518 · Participants: 29628Caesars Entertainment, Inc 401(k) PlanBarrick Retirement Plan, Total assets ($B): 1.19282548 · Participants: 6964Barrick Retirement PlanNv Energy 401(k) Plan, Total assets ($B): 0.999258908 · Participants: 2475Nv Energy 401(k) PlanEighth District Electrical Pension Fund Annuity Plan, Total assets ($B): 0.98131609 · Participants: 20426Eighth District Electrical Pension Fund Annuity 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 Informatica LLC 401(k) Retirement Plan in CA ($532M); by covered participants it is Genworth Financial Inc. Retirement and Savings Plan in VA (2,366 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($532M here).

Similar participant headcount

Nearest other-state filings by covered participants (2,366 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 Southwest Gas Corporation Employees' Investment Plan assets move in 2023? ▼
Southwest Gas Corporation Employees' Investment Plan grew at a solid clip - up 14.5% during 2023, from $465M to $532M. Reported net income was $67M.
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 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 Southwest Gas Corporation Employees' Investment Plan? ▼
Among 401(k) plans in other states, the closest by assets is Informatica LLC 401(k) Retirement Plan in CA ($532M, 1,970 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 Genworth Financial Inc. Retirement and Savings Plan in VA (2,366 participants, $847M 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 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.