401(k) · DOL Form 5500 · 2023

Southwest Gas Corporation 401(k) Plan

Data updated 2026-08-11

$532M
Total assets: 2,366
Participants: 98th
Percentile by assets: $224,956
Avg per participant

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.

98th percentile by assets (of 127,072 plans)
#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.

$532M
total plan assets (2023 EOY): 2,366
covered participants: 98th
percentile by assets (of 127,072 plans): $224,956
avg assets per participant

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 →

State

Nevada

Industry

Utilities

Participants vs Nevada filers

In Nevada, the average filing covers about 636 participants across 808 plans. Southwest Gas Corporation Employees' Investment Plan reports 2,366 participants - 3.7x that state average ($532M EOY assets).

Nevada filing particulars

Total Assets (Beginning of Year)	$465M
Net Assets (End of Year)	$532M
Net Income	$67M
Employer EIN	880085720
Plan Effective Date	1965-04-01
Filing Status	FILING RECEIVED

Sponsor Plan History (Southwest Gas Corporation)

Total plan assets by year, all Southwest Gas Corporation plans on file

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

The Mgm Resorts 401(k) Savings Plan $2.0B · 28,142
Caesars Entertainment, Inc 401(k) Plan $1.8B · 29,628
Barrick Retirement Plan $1.2B · 6,964
Nv Energy 401(k) Plan $999M · 2,475
Eighth District Electrical Pension Fund Annuity Plan $981M · 20,426

Compare Southwest Gas Corporation Employees' Inv… side-by-side with 3 peers →

Similar-Sized 401(k) Plans Nationally

401(k) plans in other states closest to Southwest Gas Corporation Employees' Investment Plan by total assets, not by location.

Informatica LLC 401(k) Retirement Plan (CA) $532M · 1,970
Bombardier 401(k) Savings Plan (KS) $532M · 2,146
The Segal Group Profit Sharing Plan (NY) $532M · 1,092
Diebold, Incorporated 401(k) Savings Plan (OH) $532M · 3,344

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).

Next read for Southwest Gas Corporation Employees' Inv…

Filing takeaways

Ways to act on Southwest Gas Corporation Employees' Investment Plan's numbers.

By total assets, Southwest Gas Corporation Employees' Investment Plan ranks in the top 5% of all filed plans by assets. See the largest plans
Compare it side-by-side against 3 similar 401(k) plans in Nevada. Compare plans
Southwest Gas Corporation's sponsor-wide assets have grown 9.9% since 2022 across 3 plan years on file. More Utilities plans

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.