SO vs. K

Last updated Jun 6, 2026

SO (The Southern Company) and K (Kellogg Company) are both stocks. SO operates in Utilities - Regulated Electric (Utilities), while K operates in Packaged Foods (Consumer Defensive). At a 0.31 correlation, their price movements are largely independent.

Performance

SO vs. K - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in The Southern Company (SO) and Kellogg Company (K). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

SO

• 1D: 1.07%
• 1M: 1.71%
• YTD: 7.91%
• 6M: 9.06%
• 1Y: 8.35%
• 3Y*: 14.05%
• 5Y*: 11.60%
• 10Y*: 10.83%

K

• 1D: —
• 1M: —
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

*Multi-year figures are annualized to reflect compound growth (CAGR)

SO vs. K - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
SO The Southern Company	7.91%	9.47%	21.72%	2.21%	8.24%	16.34%	0.63%	51.65%	-3.75%	2.42%
K Kellogg Company	0.00%	5.99%	49.75%	-7.44%	14.35%	7.44%	-6.78%	26.08%	-13.32%	-4.93%

Correlation

The correlation between SO and K is 0.12, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.12
Correlation (3Y) Calculated over the trailing 3-year period	0.28
Correlation (5Y) Calculated over the trailing 5-year period	0.36
Correlation (10Y) Calculated over the trailing 10-year period	0.35
Correlation (All Time) Calculated using the full available price history since Dec 18, 1984	0.31

The correlation between SO and K shifts across timeframes, from 0.12 (1 year) to 0.36 (5 years), reflecting how their relationship changes across market environments.

Fundamentals

Market Cap SO : $104.45B K : $29.20B
EPS SO : $3.92 K : $3.65
PE Ratio SO : 23.62 K : 22.87
PEG Ratio SO : 1.46 K : 3.84
PS Ratio SO : 3.42 K : 2.30
PB Ratio SO : 2.81 K : 6.95
Total Revenue (TTM) SO : $30.17B K : $12.67B
Gross Profit (TTM) SO : $13.01B K : $4.41B
EBITDA (TTM) SO : $14.44B K : $2.25B

Return for Risk

SO vs. K — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

SO

SO Risk / Return Rank: 54
SO Sharpe Ratio Rank: 59
SO Sortino Ratio Rank: 51
SO Omega Ratio Rank: 49
SO Calmar Ratio Rank: 54
SO Martin Ratio Rank: 55

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

SO vs. K - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for The Southern Company (SO) and Kellogg Company (K). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

	SO	K	Difference
Sharpe ratio: Return per unit of total volatility	0.52	—	—
Sortino ratio: Return per unit of downside risk	0.84	—	—
Omega ratio: Gain probability vs. loss probability	1.10	—	—
Calmar ratio: Return relative to maximum drawdown	0.55	—	—
Martin ratio: Return relative to average drawdown	1.29	—	—
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

Sharpe Ratios by Period

	SO	K	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.52	—	—
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.62	—	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.49	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.62	—	—

Drawdowns

Drawdown Indicators

	SO	K	Difference
Max Drawdown Largest peak-to-trough decline	-38.43%	—	—
Max Drawdown (1Y) Largest decline over 1 year	-14.99%	—	—
Max Drawdown (3Y) Largest decline over 3 years	-14.99%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-23.28%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-38.43%	—	—
Current Drawdown Current decline from peak	-5.79%	—	—
Average Drawdown Average peak-to-trough decline	-6.87%	—	—
Ulcer Index Depth and duration of drawdowns from previous peaks	6.35%	—	—

Volatility

Volatility by Period

	SO	K	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.62%	—	—
Volatility (6M) Calculated over the trailing 6-month period	12.98%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	15.97%	—	—
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.65%	—	—
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.94%	—	—

Dividends

SO vs. K - Dividend Comparison

SO's dividend yield for the trailing twelve months is around 3.22%, more than K's 1.39% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
K Kellogg Company	1.39%	2.76%	2.79%	10.56%	3.28%	3.59%	3.66%	3.27%	3.86%	3.12%	2.77%	2.74%
SO The Southern Company	3.22%	3.37%	3.47%	3.96%	3.78%	3.82%	4.13%	3.86%	5.42%	4.78%	4.52%	4.60%

Financials

SO vs. K - Profitability Comparison

The chart below illustrates the profitability comparison between The Southern Company and Kellogg Company over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

SO - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, The Southern Company reported a gross profit of 3.90B and revenue of 8.40B. Therefore, the gross margin over that period was 46.5%.

K - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Kellogg Company reported a gross profit of 1.08B and revenue of 3.26B. Therefore, the gross margin over that period was 33.3%.

SO - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, The Southern Company reported an operating income of 2.02B and revenue of 8.40B, resulting in an operating margin of 24.0%.

K - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Kellogg Company reported an operating income of 452.00M and revenue of 3.26B, resulting in an operating margin of 13.9%.

SO - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, The Southern Company reported a net income of 1.36B and revenue of 8.40B, resulting in a net margin of 16.2%.

K - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Kellogg Company reported a net income of 309.00M and revenue of 3.26B, resulting in a net margin of 9.5%.

Frequently Asked Questions

Can I hold both SO and K in my portfolio?

SO and K have a correlation of 0.12, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.