Southern Company 401(k) Plan

The Southern Company Employee Savings Plan is a large single-employer 401(k) plan covering 35,609 total participants as of the end of the 2024 plan year, with 34,850 participants holding account balances. Plan assets totaled approximately $9.3 billion at year-end 2024, with Merrill Lynch, Pierce, Fenner and Smith serving as recordkeeper. The investment menu is built primarily on a foundation of BlackRock, Northern Trust, and Vanguard collective investment trusts, alongside a significant Southern Company common stock position of roughly $3.06 billion. The plan also offers participant loans and a self-directed brokerage window.

Participants: 35,497 Plan assets: $9,300,088,498 Plan number: 002 Form 5500 plan year: 2024 Last verified: May 29, 2026 View Form 5500
Employer match
Employer matching contribution details are not specifically disclosed in the 2024 Form 5500 filing
Investment options
8
funds in the lineup
Auto-enrollment
Not specified

By Zac Murphy, CFA charterholder and CFP professional. Published May 29, 2026. Verified against Form 5500 plan year 2024.

Build your allocation
Need some help investing your 401(k)?

Answer 13 quick questions to find your risk profile and see which of five sample allocations fits.

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Fund lineup

Fund Asset Class Type
BlackRock EAFE Equity Index Fund International Equity Index
BlackRock Russell 2000 Index Fund US Small Cap Index
BlackRock Short-Term Investment Fund Money Market Active
NT Collective Aggregate Bond Index Fund US Bonds Index
Vanguard Institutional 500 Index US Large Cap Index
Southern Company Common Stock Company Stock Other
BLF FedFund Money Market Money Market Active
Self-Directed Brokerage Account Other Other

Why our allocations use only index funds

The actively managed funds in this plan cost more per year than the plan's index funds, which run roughly 0.02% to 0.06%. Decades of research on long-term active fund performance do not support reliable outperformance net of fees, which is why the allocation ideas below may consider using only the low-cost index options.

Employer match

Match summary
Employer matching contribution details are not specifically disclosed in the 2024 Form 5500 filing
Match cap --
Effective match rate --
Vesting Vesting schedule not disclosed in the 2024 filing; line 6h reports 0 participants who terminated with less than 100% vested accrued benefits, which may indicate immediate vesting or that no partially-vested participants terminated during th
Waiting period Not disclosed in the 2024 filing

Sources

  • Plan metadata (employer, participants, assets, plan year): Form 5500 annual return/report, plan year 2024 -- view filing
  • Summary Plan Description (SPD) and fee disclosure (404a-5), where available from the plan administrator.

This page is for educational purposes only and does not constitute investment, tax, or legal advice, nor a recommendation to buy or sell any security. Information is drawn from public Form 5500 filings and plan documents and may be incomplete or out of date. You may consider consulting a qualified professional and confirming all details with your plan administrator before making decisions. Waterfall Planning is not affiliated with Southern Company.

Find your risk profile

Answer 13 questions to see which allocation fits your situation.

Question 1 of 13

Risk assessment methodology based on Grable, J. E., & Lytton, R. H. (1999). Financial risk tolerance revisited: The development of a risk assessment instrument. Financial Services Review, 8, 163-181.

Allocation ideas

Five sample mixes built from this plan's funds, from conservative to growth. Take the assessment above to see which one fits your risk profile.

Recommended for you (based on your risk profile)
Conservative
Conservative

Capital preservation with minimal market exposure, built from bonds and stable value.

US equity   International   Bonds   Stable value
NT Collective Aggregate Bond Index Fund 70%
BlackRock Short-Term Investment Fund 30%
0% stocks / 100% bonds
Recommended for you (based on your risk profile)
Income & A Little Growth
Income & A Little Growth

Mostly bonds with a small stock sleeve for modest growth.

US equity   International   Bonds   Stable value
NT Collective Aggregate Bond Index Fund 49%
BlackRock Short-Term Investment Fund 21%
Vanguard Institutional 500 Index 19%
BlackRock EAFE Equity Index Fund 8%
BlackRock Russell 2000 Index Fund 3%
30% stocks / 70% bonds
Recommended for you (based on your risk profile)
Balanced
Balanced

A classic 60/40 split of stocks and bonds.

US equity   International   Bonds   Stable value
Vanguard Institutional 500 Index 39%
NT Collective Aggregate Bond Index Fund 28%
BlackRock EAFE Equity Index Fund 15%
BlackRock Short-Term Investment Fund 12%
BlackRock Russell 2000 Index Fund 6%
60% stocks / 40% bonds
Recommended for you (based on your risk profile)
Growth & Income
Growth & Income

Stock-heavy with a bond cushion for a long horizon.

US equity   International   Bonds   Stable value
Vanguard Institutional 500 Index 52%
BlackRock EAFE Equity Index Fund 20%
NT Collective Aggregate Bond Index Fund 14%
BlackRock Russell 2000 Index Fund 8%
BlackRock Short-Term Investment Fund 6%
80% stocks / 20% bonds
Recommended for you (based on your risk profile)
Growth
Growth

All stocks for maximum long-term growth potential, with higher short-term volatility.

US equity   International   Bonds   Stable value
Vanguard Institutional 500 Index 65%
BlackRock EAFE Equity Index Fund 25%
BlackRock Russell 2000 Index Fund 10%
100% stocks / 0% bonds
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These allocation ideas are educational illustrations built from this plan's available funds and a standard risk-tolerance assessment. They are not personalized investment advice or a recommendation, and risk tolerance is only one factor in an investment decision. You may consider consulting a qualified professional before making changes to your account.