ECOW vs. VOO

Last updated Aug 2, 2026

ECOW (Pacer Emerging Markets Cash Cows 100 ETF) and VOO (Vanguard S&P 500 ETF) are both exchange-traded funds - ECOW is a Emerging Markets Equities fund tracking the Pacer Emerging Markets Cash Cows 100 Index, while VOO is a S&P 500 fund tracking the S&P 500 Index. Both are passively managed. Over the past 5 years, ECOW returned 7.26%/yr vs 12.83%/yr for VOO. Their 0.48 correlation means their historical movements had little consistent relationship. ECOW charges 0.70%/yr vs 0.03%/yr for VOO.

Performance

ECOW vs. VOO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Pacer Emerging Markets Cash Cows 100 ETF (ECOW) 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, ECOW achieves a 13.04% return, which is significantly higher than VOO's 10.16% return.

ECOW

• 1D: -0.60%
• 1M: 3.22%
• 6M: 5.35%
• YTD: 13.04%
• 1Y: 29.31%
• 3Y*: 16.24%
• 5Y*: 7.26%
• 10Y*: —
• ALL TIME*: 7.35%

VOO

• 1D: 0.71%
• 1M: 0.26%
• 6M: 8.58%
• YTD: 10.16%
• 1Y: 21.58%
• 3Y*: 19.42%
• 5Y*: 12.83%
• 10Y*: 15.14%
• ALL TIME*: 14.78%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
ECOW Pacer Emerging Markets Cash Cows 100 ETF	$617.95K	$706.50K	$1.39M
VOO Vanguard S&P 500 ETF	$3.82B	$3.78B	$5.44B

ECOW vs. VOO - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
ECOW Pacer Emerging Markets Cash Cows 100 ETF	13.04%	32.50%	3.17%	15.79%	-19.28%	7.47%	-2.51%	10.37%
VOO Vanguard S&P 500 ETF	10.16%	17.82%	24.98%	26.32%	-18.17%	28.79%	18.32%	11.16%

Correlation

The correlation between ECOW and VOO is 0.62, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.62
Correlation (3Y) Balances recent behavior with more history.	0.54
Correlation (5Y) Shows whether the relationship held over a longer period.	0.52
Correlation (All Time) Calculated using the full available price history since May 6, 2019	0.48

The correlation between ECOW and VOO shifts across timeframes, from 0.48 (all time) to 0.62 (1 year), reflecting how their relationship changes across market environments.

ECOW vs. VOO - Sectors Allocation Comparison

Sectors	ECOW	VOO
Communication Services	15.2%	9.9%
Consumer Cyclical	13.9%	9.5%
Consumer Defensive	11.6%	4.5%
Basic Materials	11.2%	1.7%
Industrials	10.7%	8.5%
Energy	10.4%	3.0%
Utilities	6.9%	2.2%
Technology	4.2%	38.6%
Healthcare	3.7%	8.9%
Financial Services	-	11.4%
Real Estate	-	1.8%

Return for Risk

ECOW vs. VOO — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

ECOW

ECOW Risk / Return Rank: 83
ECOW Sharpe Ratio Rank: 86
ECOW Sortino Ratio Rank: 83
ECOW Omega Ratio Rank: 84
ECOW Calmar Ratio Rank: 88
ECOW Martin Ratio Rank: 75

VOO

VOO Risk / Return Rank: 68
VOO Sharpe Ratio Rank: 68
VOO Sortino Ratio Rank: 65
VOO Omega Ratio Rank: 66
VOO Calmar Ratio Rank: 64
VOO Martin Ratio Rank: 76

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

ECOW vs. VOO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Pacer Emerging Markets Cash Cows 100 ETF (ECOW) 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	ECOW	VOO	Difference
Sharpe ratio: Return per unit of total volatility	2.02	1.53	+0.48
Sortino ratio: Return per unit of downside risk	2.74	2.13	+0.61
Omega ratio: Gain probability vs. loss probability	1.37	1.28	+0.09
Calmar ratio: Return relative to maximum drawdown	3.56	2.21	+1.35
Martin ratio: Return relative to average drawdown	9.38	9.44	-0.05

ECOW vs. VOO - Sharpe Ratio Comparison

The current ECOW Sharpe Ratio is 2.02, which is higher than the VOO Sharpe Ratio of 1.53. The chart below compares the historical Sharpe Ratios of ECOW 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.

Drawdowns

ECOW vs. VOO - Drawdown Comparison

The maximum ECOW drawdown since its inception was -40.27%, which is greater than VOO's maximum drawdown of -33.99%. Use the drawdown chart below to compare losses from any high point for ECOW and VOO.

Drawdown Indicators

	ECOW	VOO	Difference
Max Drawdown Largest peak-to-trough decline	-40.27%	-33.99%	-6.28%
Max Drawdown (1Y) Largest decline over 1 year	-8.35%	-8.90%	+0.55%
Max Drawdown (3Y) Largest decline over 3 years	-18.77%	-18.69%	-0.08%
Max Drawdown (5Y) Largest decline over 5 years	-33.30%	-24.52%	-8.78%
Max Drawdown (10Y) Largest decline over 10 years	—	-33.99%	—
Current Drawdown Current decline from peak	-3.58%	-1.38%	-2.20%
Average Drawdown Average peak-to-trough decline	-10.94%	-3.67%	-7.27%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.16%	2.08%	+1.08%

Volatility

ECOW vs. VOO - Volatility Comparison

Pacer Emerging Markets Cash Cows 100 ETF (ECOW) and Vanguard S&P 500 ETF (VOO) have volatilities of 3.51% and 3.54%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ECOW	VOO	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.51%	3.54%	-0.03%
Volatility (6M) Calculated over the trailing 6-month period	11.99%	10.10%	+1.89%
Volatility (1Y) Calculated over the trailing 1-year period	14.81%	12.82%	+1.99%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.73%	16.93%	+0.80%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.04%	18.01%	+2.03%

ECOW vs. VOO - Expense Ratio Comparison

ECOW has a 0.70% expense ratio, which is higher than VOO's 0.03% expense ratio.

Dividends

ECOW vs. VOO - Dividend Comparison

ECOW's dividend yield for the trailing twelve months is around 4.44%, more than VOO's 1.07% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ECOW Pacer Emerging Markets Cash Cows 100 ETF	4.44%	5.20%	7.35%	5.46%	7.50%	4.39%	3.35%	8.08%	0.00%	0.00%	0.00%	0.00%
VOO Vanguard S&P 500 ETF	1.07%	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 ECOW and VOO in my portfolio?

ECOW and VOO have a correlation of 0.62, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ECOW or VOO?

VOO has higher volatility (3.54%) compared to ECOW (3.51%). In terms of maximum drawdown, ECOW dropped -40.27% vs VOO's -33.99%.

Which ETF is better, ECOW or VOO?

On 5-year performance, VOO leads with 12.83% vs 7.26% for ECOW. On fees, VOO is cheaper at 0.03% per year. Their volatility is very similar. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, ECOW or VOO?

Over the 5-year period, VOO has performed better with a 12.83% return vs 7.26%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, ECOW or VOO?

VOO is cheaper with a 0.03% expense ratio, compared with 0.70% for ECOW.

Which ETF pays a higher dividend yield, ECOW or VOO?

ECOW has the higher dividend yield at 4.44%, compared with 1.07% for VOO.

What is the main difference between ECOW and VOO?

ECOW is categorized as Emerging Markets Equities, while VOO is S&P 500. ECOW tracks Pacer Emerging Markets Cash Cows 100 Index, while VOO tracks S&P 500 Index. They also come from different issuers: Pacer and Vanguard. Their fees differ too: 0.70% for ECOW and 0.03% for VOO.

Which has better risk-adjusted returns?

ECOW currently has the higher Sharpe Ratio (2.02 vs 1.53), 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.