401(k) · DOL Form 5500 · 2023

Oneok, Inc. 401(k) Plan

Data updated 2026-08-25

$1.2B
Total assets Very large vs avg
2,965
Participants Above avg headcount
99th
Percentile by assets National rank
$390,081
Avg per participant High balance/head
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Official DOL plan name: Oneok, Inc. 401(k) Plan · Sponsored by Oneok, Inc. · Oklahoma · Transportation & Warehousing

$1.2B in assets, 2,965 participants

Oneok, Inc.'s Oneok, Inc. 401(k) Plan reported $1.2B in total assets and 2,965 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.

  • #3,293 in Transportation & Warehousing (3,362 peers)

Coverage in Oklahoma

Oneok, Inc. 401(k) Plan covers 2,965 participants in Oklahoma, 3.9x the typical Oklahoma plan (state average ~760 per filing). Assets: $1.2B.

#3,293
in Transportation & Warehousing (3,362 peers)
+50.1%
assets growth YoY
12×
vs typical plan assets (national mean)

Oneok, Inc. 401(k) Plan's outsized position by total assets

Oneok, Inc. 401(k) Plan vs every filed plan by assets

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

$1,156,591,000 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

Oneok, Inc. 401(k) 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. Oneok, Inc. 401(k) Plan lands in the large band (2,965 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Oneok, Inc. 401(k) Plan reported net income rose from -$79M in the plan year 2022 filing to $386M in the plan year 2023 filing.
  • Oneok, Inc. 401(k) Plan end-of-year assets rose from $770M in the plan year 2022 filing to $1.2B in the plan year 2023 filing.
  • Oneok, Inc. 401(k) Plan reported participants rose from 2,835 in the plan year 2022 filing to 2,965 in the plan year 2023 filing.

See the national 2022→2023 release diff →

Plan-year Form 5500 strip

Filing strip 731520922 · Oneok, Inc. PY 2023 · 401(k)

Oneok, Inc. 401(k) Plan · $1.2B · 2,965 · 99th

  • BOY $1.2B
  • SCH 2,965
  • EBSA 99th
  • PART 401(k)
  • TYPE near Essilorluxottica Retirement Savings Plan 1
  • NET ind #3293

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 Transportation & Warehousing retirement plans → · Plans in Oklahoma →

Oneok, Inc. 401(k) Plan in the asset neighbourhood

Oneok, Inc. 401(k) Plan$1.2BEssilorluxottica Retirement Savings Plan 1Essilorluxottica Retirement …$1.2BSpirit Aerosystems Holdings, Inc. Retirement & Savings PlanSpirit Aerosystems Holdings,…$1.2BCooley LLP Salary Deferral and Profit Sharing PlanCooley LLP Salary Deferral a…$1.2BEog Resources, Inc. Savings and Retirement PlanEog Resources, Inc. Savings …$1.2B
End-of-year total assets ($B) among Oneok, Inc. 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Oklahoma filing particulars

Total Assets (Beginning of Year)$770M
Net Assets (End of Year)$1.2B
Net Income$386M
Employer EIN731520922
Plan Effective Date1956-04-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Oneok, Inc.)

Sponsor-wide plan assets over time

All Oneok, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$1.8B 60.38217715343218% vs 2022
2024 filing year
$1B$1.2B$1.4B$1.6B$1.8B$2B 202220232024 $1.09B $1.75B ▲ +60.6%
Year Plans Participants Total Assets
2022 2 3,109 $1.1B
2023 2 3,195 $1.5B
2024 2 4,948 $1.8B

Nearby 401(k) Plans in Oklahoma

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

Oneok, Inc. 401(k) Plan vs. nearby 401(k) plans in Oklahoma, assets vs. participants Scatter plot of 6 data points. 050001000015000 012345 Total assets ($B) Participants Oneok, Inc. 401(k) Plan, Total assets ($B): 1.156591 · Participants: 2965Oneok, Inc. 401(k) PlanQuiktrip Corporation Retirement Plan, Total assets ($B): 4.212452319 · Participants: 11746Quiktrip Corporation Retirement PlanThe Williams Investment Plus Plan, Total assets ($B): 1.681202476 · Participants: 5041The Williams Investment Plus PlanBok Financial 401(k) Plan, Total assets ($B): 1.048169756 · Participants: 4766Bok Financial 401(k) PlanDevon Energy Corporation Incentive Savings Plan, Total assets ($B): 0.932957189 · Participants: 1858Devon Energy Corporation Incentive Savings PlanSaint Francis Health System, Inc. 401(k) Savings P, Total assets ($B): 0.867054663 · Participants: 10134Saint Francis Health System, Inc. 401(k) Savings P
Oneok, Inc. 401(k) Plan vs. nearby 401(k) plans in Oklahoma, assets vs. participants
Compare Oneok, Inc. 401(k) Plan side-by-side with 3 peers →

Oneok, Inc. 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside Oklahoma, the nearest 401(k) by assets is Essilorluxottica Retirement Savings Plan 1 in NY ($1.2B); by covered participants it is Taylor Morrison 401(k) Savings Plan in AZ (2,964 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (2,965 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 Oneok, Inc. 401(k) Plan assets move in 2023? ▼
Oneok, Inc. 401(k) Plan surged - up 50.1% during 2023, from $770M to $1.2B. Reported net income was $386M.
How have Oneok, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Oneok, Inc.'s sponsor-wide assets grew 60.4%, from $1.1B to $1.8B.
Where does Oneok, Inc. 401(k) Plan rank by assets among Form 5500 filers? ▼
Oneok, Inc. 401(k) 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 Oneok, Inc. 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Essilorluxottica Retirement Savings Plan 1 in NY ($1.2B, 33,776 participants).
Which 401(k) plans cover a similar participant headcount to Oneok, Inc. 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Taylor Morrison 401(k) Savings Plan in AZ (2,964 participants, $321M 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 731520922.

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.