Assets by plan
Share of aggregate retirement assets
Sponsor portfolioTH
ALLIANT ENERGY CORPORATE SERVICES INC
EIN 39-1914946utilitiesLatest filing 2024
Plans
4
Retirement
2
$1.63B assets
Welfare
2
$7.0M premiums
Participants
13,041
4902 N. BILTMORE LANE, SUITE 1000 - MADISON, WI 537182148608-458-3311LinkedIn5001-10000 employeesutilities
Retirement portfolio analytics
2 plans aggregated / $1.63B assets / 6,378 participantsRecordkeeper share
DC plan assets by Schedule C recordkeeper
86%top
- GREAT-WEST LIFE & ANNUITY INSURANCE86%
- (Not disclosed)14%
Participants by plan
Active + retired + deferred vested
Benefits portfolio analytics
2 plans / $7.0M premiums / 7,180 covered livesCoverage by line
Premium dollars by benefit type (bundled lines overlap)
- Stop-loss$2.6M
- Life$2.2M
- Vision$1.2M
- Long-term disability$1.0M
Carrier market share
Premium dollars by Schedule A carrier
37%top
- BLUE CROSS OF CALIFORNIA37%
- SECURIAN LIFE INSURANCE COMPANY32%
- VISION SERVICE PLAN17%
- THE LINCOLN NATIONAL LIFE INSURANCE COMPANY15%
- NATIONAL UNION FIRE INS. CO. OF PITTSBURGH, PA0%
Broker market share
Schedule A broker compensation
100%top
- WILLIS TOWERS WATSON US LLC100%
Plan deep-dives
Per-plan teasers. The full analytics (fees vs peers, audit grade, trajectory, counterparties) live on each plan detail page.Retirement#005
ALLIANT ENERGY CORPORATION 401(K) SAVINGS PLAN
ESOP
Assets$1.41B
Participants4,222
Inside the deep dive
Fees vs peersAudit gradeAsset trajectoryContributionsSch C providers
Open plan deep dive
Retirement#001
ALLIANT ENERGY CASH BALANCE PENSION PLAN
CashBalance
Assets$225.9M
Participants2,156
Inside the deep dive
Fees vs peersAudit gradeAsset trajectoryContributionsSch C providers
Open plan deep dive
Welfare#501
ALLIANT ENERGY HEALTH & WELFARE BENEFIT PLAN
Mixed - MINNESOTA LIFE INSURANCE COMPANY
Premiums$4.8M
Covered lives4,018
Inside the deep dive
Premium breakdownCarriersBrokersCoverage stats
Open plan deep dive
Welfare#502
ALLIANT ENERGY RETIREE HEALTH & WELFARE BENEFIT PLAN
Mixed - BLUE CROSS BLUE SHIELD OF WISCONSIN
Premiums$2.3M
Covered lives3,162
Inside the deep dive
Premium breakdownCarriersBrokersCoverage stats
Open plan deep dive
Retirement plans2
| Plan # | Name | Type | Assets | Participants | Latest year | |
|---|---|---|---|---|---|---|
| 005 | ALLIANT ENERGY CORPORATION 401(K) SAVINGS PLAN | ESOP | $1.41B | 4,222 | 2024 | |
| 001 | ALLIANT ENERGY CASH BALANCE PENSION PLAN | CashBalance | $225.9M | 2,156 | 2024 |
Welfare plans2
| Plan # | Name | Funding | Carrier | Premiums | Covered | Latest year | |
|---|---|---|---|---|---|---|---|
| 501 | ALLIANT ENERGY HEALTH & WELFARE BENEFIT PLAN | Mixed | MINNESOTA LIFE INSURANCE COMPANY | $4.8M | 4,018 | 2024 | |
| 502 | ALLIANT ENERGY RETIREE HEALTH & WELFARE BENEFIT PLAN | Mixed | BLUE CROSS BLUE SHIELD OF WISCONSIN | $2.3M | 3,162 | 2024 |
Retirement plans
Welfare plans