CIG vs. VST

Last updated Jun 3, 2026

CIG (Companhia Energética de Minas Gerais) and VST (Vistra Corp.) are both stocks. Both are in the Utilities sector — CIG in Utilities - Diversified, VST in Utilities - Independent Power Producers. Over the past 5 years, CIG returned 23.82%/yr vs 58.63%/yr for VST. At a 0.19 correlation, their price movements are largely independent.

Performance

CIG vs. VST - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Companhia Energética de Minas Gerais (CIG) and Vistra Corp. (VST). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, CIG achieves a 11.86% return, which is significantly higher than VST's -1.95% return.

CIG

• 1D: 2.38%
• 1M: -12.15%
• YTD: 11.86%
• 6M: 10.80%
• 1Y: 30.95%
• 3Y*: 17.08%
• 5Y*: 23.82%
• 10Y*: 20.43%

VST

• 1D: 2.07%
• 1M: 1.73%
• YTD: -1.95%
• 6M: -8.20%
• 1Y: -5.19%
• 3Y*: 87.86%
• 5Y*: 58.63%
• 10Y*: —

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

CIG vs. VST - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
CIG Companhia Energética de Minas Gerais	11.86%	28.04%	9.38%	20.62%	60.40%	-6.09%	-7.92%	-1.14%	84.56%	-8.17%
VST Vistra Corp.	-1.95%	17.66%	261.52%	70.73%	5.08%	19.57%	-11.87%	2.46%	24.95%	18.19%

Correlation

The correlation between CIG and VST is 0.16, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.16
Correlation (3Y) Calculated over the trailing 3-year period	0.11
Correlation (5Y) Calculated over the trailing 5-year period	0.16
Correlation (All Time) Calculated using the full available price history since Oct 5, 2016	0.19

Fundamentals

EPS CIG : $1.69 VST : $8.60
PE Ratio CIG : 1.27 VST : 18.36
PEG Ratio CIG : 0.12 VST : 0.42
PS Ratio CIG : 0.14 VST : 2.34
Total Revenue (TTM) CIG : $43.35B VST : $17.20B
Gross Profit (TTM) CIG : $6.06B VST : $1.12B
EBITDA (TTM) CIG : $6.81B VST : $4.34B

Return for Risk

CIG vs. VST — Risk / Return Rank

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

CIG

CIG Risk / Return Rank: 68
CIG Sharpe Ratio Rank: 71
CIG Sortino Ratio Rank: 66
CIG Omega Ratio Rank: 63
CIG Calmar Ratio Rank: 66
CIG Martin Ratio Rank: 71

VST

VST Risk / Return Rank: 36
VST Sharpe Ratio Rank: 36
VST Sortino Ratio Rank: 33
VST Omega Ratio Rank: 33
VST Calmar Ratio Rank: 38
VST Martin Ratio Rank: 39

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.

CIG vs. VST - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Companhia Energética de Minas Gerais (CIG) and Vistra Corp. (VST). 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.

	CIG	VST	Difference
Sharpe ratio Return per unit of total volatility	1.04	-0.11	+1.15
Sortino ratio Return per unit of downside risk	1.58	0.19	+1.39
Omega ratio Gain probability vs. loss probability	1.19	1.02	+0.16
Calmar ratio Return relative to maximum drawdown	1.35	-0.03	+1.38
Martin ratio Return relative to average drawdown	4.05	-0.06	+4.10
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

CIG vs. VST - Sharpe Ratio Comparison

The current CIG Sharpe Ratio is 1.04, which is higher than the VST Sharpe Ratio of -0.11. The chart below compares the historical Sharpe Ratios of CIG and VST, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	CIG	VST	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.04	-0.11	+1.15
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.64	1.23	-0.60
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.44	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.14	0.74	-0.59

Drawdowns

CIG vs. VST - Drawdown Comparison

The maximum CIG drawdown since its inception was -88.84%, which is greater than VST's maximum drawdown of -53.32%. Use the drawdown chart below to compare losses from any high point for CIG and VST.

Drawdown Indicators

	CIG	VST	Difference
Max Drawdown Largest peak-to-trough decline	-88.84%	-53.32%	-35.52%
Max Drawdown (1Y) Largest decline over 1 year	-21.43%	-38.01%	+16.58%
Max Drawdown (3Y) Largest decline over 3 years	-22.06%	-48.80%	+26.74%
Max Drawdown (5Y) Largest decline over 5 years	-26.00%	-48.80%	+22.80%
Max Drawdown (10Y) Largest decline over 10 years	-65.73%	—	—
Current Drawdown Current decline from peak	-19.55%	-27.31%	+7.76%
Average Drawdown Average peak-to-trough decline	-41.64%	-13.67%	-27.97%
Ulcer Index Depth and duration of drawdowns from previous peaks	7.13%	19.94%	-12.81%

Volatility

CIG vs. VST - Volatility Comparison

The current volatility for Companhia Energética de Minas Gerais (CIG) is 8.58%, while Vistra Corp. (VST) has a volatility of 14.72%. This indicates that CIG experiences smaller price fluctuations and is considered to be less risky than VST based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CIG	VST	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.58%	14.72%	-6.14%
Volatility (6M) Calculated over the trailing 6-month period	22.90%	37.47%	-14.57%
Volatility (1Y) Calculated over the trailing 1-year period	29.99%	48.62%	-18.63%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	37.64%	47.87%	-10.23%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	46.79%	42.19%	+4.60%

Dividends

CIG vs. VST - Dividend Comparison

CIG's dividend yield for the trailing twelve months is around 11.05%, more than VST's 0.57% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CIG Companhia Energética de Minas Gerais	11.05%	12.02%	11.10%	5.50%	13.28%	10.94%	3.94%	3.35%	4.20%	1.98%	7.39%	7.78%
VST Vistra Corp.	0.57%	0.56%	0.63%	2.13%	3.12%	2.64%	2.75%	2.17%	0.00%	0.00%	14.97%	0.00%

Financials

CIG vs. VST - Profitability Comparison

The chart below illustrates the profitability comparison between Companhia Energética de Minas Gerais and Vistra Corp. over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

CIG - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Companhia Energética de Minas Gerais reported a gross profit of 1.62B and revenue of 10.27B. Therefore, the gross margin over that period was 15.8%.

VST - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Vistra Corp. reported a gross profit of 0.00 and revenue of 5.64B. Therefore, the gross margin over that period was 0.0%.

CIG - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Companhia Energética de Minas Gerais reported an operating income of 1.31B and revenue of 10.27B, resulting in an operating margin of 12.8%.

VST - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Vistra Corp. reported an operating income of 1.50B and revenue of 5.64B, resulting in an operating margin of 26.6%.

CIG - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Companhia Energética de Minas Gerais reported a net income of 960.23M and revenue of 10.27B, resulting in a net margin of 9.4%.

VST - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Vistra Corp. reported a net income of 980.00M and revenue of 5.64B, resulting in a net margin of 17.4%.

Frequently Asked Questions

Can I hold both CIG and VST in my portfolio?

CIG and VST have a correlation of 0.16, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, CIG or VST?

VST has higher volatility (14.72%) compared to CIG (8.58%). In terms of maximum drawdown, CIG dropped -88.84% vs VST's -53.32%.

Which has better risk-adjusted returns?

CIG currently has the higher Sharpe Ratio (1.04 vs -0.11), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.