ACT vs. VOO

Last updated Jun 4, 2026

ACT (Enact Holdings, Inc.) is a stock, while VOO (Vanguard S&P 500 ETF) is S&P 500 fund tracking the S&P 500 Index. Over the past 3 years, ACT returned 21.16%/yr vs 22.44%/yr for VOO. At a 0.41 correlation, their price movements are largely independent.

Performance

ACT vs. VOO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Enact Holdings, Inc. (ACT) and Vanguard S&P 500 ETF (VOO). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ACT achieves a 3.44% return, which is significantly lower than VOO's 10.91% return.

ACT

• 1D: -1.41%
• 1M: -3.77%
• YTD: 3.44%
• 6M: 6.20%
• 1Y: 18.80%
• 3Y*: 21.16%
• 5Y*: —
• 10Y*: —

VOO

• 1D: -0.70%
• 1M: 5.04%
• YTD: 10.91%
• 6M: 10.93%
• 1Y: 28.04%
• 3Y*: 22.44%
• 5Y*: 13.90%
• 10Y*: 15.56%

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

ACT vs. VOO - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
ACT Enact Holdings, Inc.	3.44%	25.20%	15.56%	25.78%	24.10%	6.61%
VOO Vanguard S&P 500 ETF	10.91%	17.82%	24.98%	26.32%	-18.17%	6.93%

Correlation

The correlation between ACT and VOO is 0.18, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.19
Correlation (3Y) Calculated over the trailing 3-year period	0.33
Correlation (All Time) Calculated using the full available price history since Sep 17, 2021	0.41

Over the past year, the correlation between ACT and VOO has dropped to 0.18 - well below their long-term average of 0.41, suggesting their price drivers have been diverging.

Return for Risk

ACT vs. VOO — Risk / Return Rank

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

ACT

ACT Risk / Return Rank: 66
ACT Sharpe Ratio Rank: 67
ACT Sortino Ratio Rank: 62
ACT Omega Ratio Rank: 59
ACT Calmar Ratio Rank: 71
ACT Martin Ratio Rank: 71

VOO

VOO Risk / Return Rank: 70
VOO Sharpe Ratio Rank: 71
VOO Sortino Ratio Rank: 70
VOO Omega Ratio Rank: 70
VOO Calmar Ratio Rank: 62
VOO Martin Ratio Rank: 75

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.

ACT vs. VOO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Enact Holdings, Inc. (ACT) and Vanguard S&P 500 ETF (VOO). 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.

	ACT	VOO	Difference
Sharpe ratio: Return per unit of total volatility	0.85	2.39	-1.54
Sortino ratio: Return per unit of downside risk	1.36	3.25	-1.90
Omega ratio: Gain probability vs. loss probability	1.16	1.43	-0.27
Calmar ratio: Return relative to maximum drawdown	1.72	3.16	-1.44
Martin ratio: Return relative to average drawdown	3.99	14.73	-10.73
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ACT vs. VOO - Sharpe Ratio Comparison

The current ACT Sharpe Ratio is 0.85, which is lower than the VOO Sharpe Ratio of 2.39. The chart below compares the historical Sharpe Ratios of ACT and VOO, 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

	ACT	VOO	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.85	2.39	-1.54
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.83	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.87	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.87	0.89	-0.02

Drawdowns

ACT vs. VOO - Drawdown Comparison

The maximum ACT drawdown since its inception was -20.25%, smaller than the maximum VOO drawdown of -33.99%. Use the drawdown chart below to compare losses from any high point for ACT and VOO.

Drawdown Indicators

	ACT	VOO	Difference
Max Drawdown Largest peak-to-trough decline	-20.25%	-33.99%	+13.74%
Max Drawdown (1Y) Largest decline over 1 year	-10.96%	-8.90%	-2.06%
Max Drawdown (3Y) Largest decline over 3 years	-15.33%	-18.69%	+3.36%
Max Drawdown (5Y) Largest decline over 5 years	—	-24.52%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-33.99%	—
Current Drawdown Current decline from peak	-7.65%	-0.70%	-6.95%
Average Drawdown Average peak-to-trough decline	-5.17%	-3.69%	-1.48%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.72%	1.91%	+2.81%

Volatility

ACT vs. VOO - Volatility Comparison

Enact Holdings, Inc. (ACT) has a higher volatility of 6.33% compared to Vanguard S&P 500 ETF (VOO) at 2.84%. This indicates that ACT's price experiences larger fluctuations and is considered to be riskier than VOO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ACT	VOO	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.33%	2.84%	+3.49%
Volatility (6M) Calculated over the trailing 6-month period	17.14%	8.90%	+8.24%
Volatility (1Y) Calculated over the trailing 1-year period	22.34%	11.80%	+10.54%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	24.75%	16.81%	+7.94%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	24.75%	18.01%	+6.74%

Dividends

ACT vs. VOO - Dividend Comparison

ACT's dividend yield for the trailing twelve months is around 2.14%, more than VOO's 1.03% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ACT Enact Holdings, Inc.	2.14%	2.06%	2.92%	4.60%	6.38%	5.95%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
VOO Vanguard S&P 500 ETF	1.03%	1.13%	1.24%	1.46%	1.69%	1.25%	1.54%	1.88%	2.06%	1.78%	2.02%	2.10%

Frequently Asked Questions

Can I hold both ACT and VOO in my portfolio?

ACT and VOO have a correlation of 0.18, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ACT or VOO?

ACT has higher volatility (6.33%) compared to VOO (2.84%). In terms of maximum drawdown, ACT dropped -20.25% vs VOO's -33.99%.

Which has better risk-adjusted returns?

VOO currently has the higher Sharpe Ratio (2.39 vs 0.85), 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.