Retirement plan

ALLIANT ENERGY CORPORATION 401(K) SAVINGS PLAN

Name: ALLIANT ENERGY CORPORATE SERVICES, INC. - ALLIANT ENERGY CORPORATION 401(K) SAVINGS PLAN (2024) Form 5500
Creator: ALLIANT ENERGY CORPORATE SERVICES, INC.
License: https://www.dol.gov/general/disclaim
Keywords: Form 5500, ERISA, retirement plan, ALLIANT ENERGY CORPORATION 401(K) SAVINGS PLAN, ALLIANT ENERGY CORPORATE SERVICES, INC.

ALLIANT ENERGY CORPORATE SERVICES, INC.EIN 39-1914946Plan #005PY 2024

4902 NORTH BILTMORE LANE - MADISON, WI 537182148608-458-3311LinkedIn5001-10000 employeesutilities

Other plans on this EIN

1 filing

#001Retirement-$225.9M assets

Prospect flagsHigh assets / participantFailed to transmit contributions

Top hat statement on fileNQDC

Filed January 13, 2015

This is a legacy paper filing. Plan administrator and contact details are recorded in the original filing, which has not been digitised into structured fields.

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Total assets (EOY)

$1409M

-6.0% from 2016

Total participants

4,222

+4.7% from 2016

Average account balance

$334,128

-10.2% from 2016

Annual return

15.40%

-9.41 pp from 2016

Benchmarks

See 69 peers

Peer group

Industry22 - Utilities

Plan typeDefined contribution

Participants1,000-4,999

Cohort69 peers

Snapshot2024

Free accounts unlock saves, downloads, and 3-year history.

Analytics

Total assets (EOY)

Plan-year ending balance

$1.41B

Not enough data

1 years with asset history on file

Average account balance

Total assets / participants with a balance (line 6g)

$334K

Not enough data

1 years with per-participant data

Participants with account balance

Stacked by status: active / separated vested / retired or beneficiary. Total = line 6g.

4,217

Not enough data

1 years with headcount on file

Eligible Participants and Participation

Bars: eligible actives (line 6a). Line: derived rate = active employees with a balance / 6a.

99.8%

Not enough data

1 years with eligibility data

Contributions (total)

Employer and participant dollars contributed each year

$76.05M

Not enough data

1 years with contributions on file

Contributions per participant

Average employer and participant contribution per enrolled participant

$25K

Not enough data

1 years with per-participant contribution data

Asset flow

BOY + contributions + return - distributions = EOY

Year

Annual return

Diverging bars; negative years highlighted

+15.40%

Not enough data

1 years with return on file

Admin fee / account holder

Total admin expenses / participants with a balance (line 6g)

$219

Not enough data

1 years with admin cost on file

Asset composition

Cash / stocks / bonds / mutual funds / real estate / loans over time

Not enough data

1 years with F_SCH_H allocation on file

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Service providers

Top 5 by compensation

Provider	Service type	Compensation
GREAT-WEST LIFE & ANNUITY INSURANCE3 years Filed as: EMPOWER ADVISORY GROUP, LLC Service code 28 8515 EAST ORCHARD ROAD · GREENWOOD VILLAGE, CO 80111	Investment Management	$611,240
GREAT-WEST LIFE & ANNUITY INSURANCE2 years Filed as: EMPOWER ANNUITY INS CO OF AMERICA Service code 15 8515 EAST ORCHARD ROAD · GREENWOOD VILLAGE, CO 80111	Recordkeeping	$291,753
FIDELITY INVESTMENTS INSTITUTIONAL1 year Filed as: FIDELITY INVESTMENTS INST CO, LLC Service code 37 · EIN 04-2647786	Loan Processing	$37,145
STRATEGIC ADVISORS, INC.1 year Service code 27 · EIN 04-2654524	Advisory (Plan)	$22,171
CHARLES SCHWAB & CO., INC.9 years Service code 50 · EIN 94-1737782	Direct Payment	$180

Plan features & details

Pension benefit codes2A2E2F2H2J2K2O2R2S2T3H

Plan features

2A
Age/service weighted or new comparability plan
Age/service weighted plan where allocations are based on age service or age and service; or new comparability or similar plan where allocations are based on participant classifications consisting entirely or predominantly of highly compensated employees or the plan provides an additional allocation rate on compensation above a specified threshold that exceeds the permitted disparity limits of Code section 401(l).
2E
Profit-sharing
Profit-sharing plan.
2F
ERISA section 404(c) plan
This plan or any part of it is intended to meet the conditions of 29 CFR 2550.404c-1 (shifting investment responsibility to participants).
2H
Partial participant-directed account plan
Participants have the opportunity to direct the investment of a portion of the assets allocated to their individual accounts regardless of whether 29 CFR 2550.404c-1 is intended to be met.
2J
Code section 401(k) feature
Cash or deferred arrangement described in Code section 401(k) that is part of a qualified defined contribution plan under which employees may elect to defer part of their compensation or receive these amounts in cash.
2K
Code section 401(m) arrangement
Employee contributions are allocated to separate accounts under the plan or employer contributions are based in whole or in part on employee deferrals or contributions to the plan. Not applicable to 401(k) plans with only QNECs and/or QMACs or to 403(b)(1) 403(b)(7) or 408 arrangements.
2O
ESOP other than a leveraged ESOP
Employee stock ownership plan that is not leveraged.
2R
Participant-directed brokerage accounts
Participant-directed brokerage accounts provided as an investment option under the plan.
2S
Automatic enrollment
Plan provides for automatic enrollment in plan that has elective contributions deducted from payroll.
2T
Default investment account
Total or partial participant-directed account plan where plan uses a default investment account for participants who fail to direct assets in their account.
3H
Controlled group member
Plan sponsor(s) is (are) a member(s) of a controlled group (Code sections 414(b) (c) or (m)).

Opportunity flags

2 tripped

ComplianceFailed to transmit contributions
Form 5500 reported a failure to timely transmit participant contributions (Schedule H line 4a).
InformationalHigh assets / participant
Assets per participant exceed $250,000 - top-decile high-value plan.

Expense breakdown

Schedule H Part II

Admin total

$923K

$309 / participant

Recordkeeping$329K35.6%
Investment mgmt$594K64.4%

% of EOY assets

0.065%

all-in expense ratio

Categories reported

2 / 9

subdivided buckets used

Audit opinion

Schedule H Part III

Unqualified opinion

Auditor signed off without reservation - the cleanest possible opinion.

Auditor firm: DELOITTE & TOUCHE LLP
Auditor EIN: 133891517
Audit fees: (not subdivided)
Opinion code: Unqualified

Metric

This plan

Peer set

Industry

Size

Avg account balance

$334,128

$191,300+74.7%

$103,065+224.2%

$200,096+67.0%

Participation rate

99.8%

93.4%+6.5pp

80.6%+19.3pp

72.0%+27.8pp

Annual return

15.40%

15.75%-0.4pp

23.95%-8.6pp

34.26%-18.9pp

Employer contribution / active EE

$10,411

$6,666+56.2%

$4,675+122.7%

$3,038+242.7%

Participant deferral / active EE

$15,049

$10,452+44.0%

$6,625+127.1%

$5,090+195.7%

Admin fee / account holder

$219

$115+90.2%

$9,349-97.7%

$269-18.7%

Provider

Service type

Compensation

GREAT-WEST LIFE & ANNUITY INSURANCE3 years

Filed as: EMPOWER ADVISORY GROUP, LLC

Service code 28

8515 EAST ORCHARD ROAD · GREENWOOD VILLAGE, CO 80111

Investment Management

$611,240

GREAT-WEST LIFE & ANNUITY INSURANCE2 years

Filed as: EMPOWER ANNUITY INS CO OF AMERICA

Service code 15

8515 EAST ORCHARD ROAD · GREENWOOD VILLAGE, CO 80111

Recordkeeping

$291,753

FIDELITY INVESTMENTS INSTITUTIONAL1 year

Filed as: FIDELITY INVESTMENTS INST CO, LLC

Service code 37 · EIN 04-2647786

Loan Processing

$37,145

STRATEGIC ADVISORS, INC.1 year

Service code 27 · EIN 04-2654524

Advisory (Plan)

$22,171

CHARLES SCHWAB & CO., INC.9 years

Service code 50 · EIN 94-1737782

Direct Payment

$180

ALLIANT ENERGY CORPORATION 401(K) SAVINGS PLAN

Top hat statement on fileNQDC

Summary metrics

Benchmarksi

Analytics

Service providersi

Plan features & details

Opportunity flagsi

Expense breakdowni

Audit opinioni

ALLIANT ENERGY CORPORATION 401(K) SAVINGS PLAN

Top hat statement on fileNQDC

Summary metrics

Benchmarksi

Analytics

Service providersi

Plan features & details

Opportunity flagsi

Expense breakdowni

Audit opinioni

Benchmarks

Service providers

Opportunity flags

Expense breakdown

Audit opinion

Benchmarks

Service providers

Opportunity flags

Expense breakdown

Audit opinion