NTSI vs. VOO

Last updated Jun 3, 2026

NTSI (WisdomTree International Efficient Core Fund) and VOO (Vanguard S&P 500 ETF) are both exchange-traded funds - NTSI is a Global Allocation fund actively managed by WisdomTree, while VOO is a S&P 500 fund tracking the S&P 500 Index. NTSI is actively managed, while VOO is passively managed. Over the past 5 years, NTSI returned 5.89%/yr vs 14.26%/yr for VOO. A 0.72 correlation means they provide meaningful diversification when combined. NTSI charges 0.26%/yr vs 0.03%/yr for VOO.

Performance

NTSI vs. VOO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in WisdomTree International Efficient Core Fund (NTSI) 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, NTSI achieves a 7.86% return, which is significantly lower than VOO's 11.69% return.

NTSI

• 1D: 0.95%
• 1M: 2.89%
• YTD: 7.86%
• 6M: 10.24%
• 1Y: 20.87%
• 3Y*: 14.50%
• 5Y*: 5.89%
• 10Y*: —

VOO

• 1D: 0.14%
• 1M: 5.39%
• YTD: 11.69%
• 6M: 12.11%
• 1Y: 29.68%
• 3Y*: 22.73%
• 5Y*: 14.26%
• 10Y*: 15.65%

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

NTSI vs. VOO - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
NTSI WisdomTree International Efficient Core Fund	7.86%	30.37%	1.11%	15.42%	-19.27%	1.76%
VOO Vanguard S&P 500 ETF	11.69%	17.82%	24.98%	26.32%	-18.17%	15.54%

Correlation

The correlation between NTSI and VOO is 0.70, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.70
Correlation (3Y) Calculated over the trailing 3-year period	0.68
Correlation (5Y) Calculated over the trailing 5-year period	0.72
Correlation (All Time) Calculated using the full available price history since May 21, 2021	0.72

The correlation between NTSI and VOO has been stable across timeframes, ranging from 0.68 to 0.72 - a consistent structural relationship.

NTSI vs. VOO - Sectors Allocation Comparison

Sectors	NTSI	VOO
Financial Services	25.0%	11.6%
Industrials	17.5%	8.3%
Technology	10.6%	35.7%
Healthcare	10.5%	8.5%
Consumer Cyclical	8.1%	10.2%
Consumer Defensive	7.4%	4.9%
Basic Materials	6.7%	1.8%
Energy	4.8%	3.5%
Communication Services	4.7%	11.3%
Utilities	3.2%	2.4%
Real Estate	1.5%	1.9%

Return for Risk

NTSI vs. VOO — Risk / Return Rank

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

NTSI

NTSI Risk / Return Rank: 38
NTSI Sharpe Ratio Rank: 39
NTSI Sortino Ratio Rank: 37
NTSI Omega Ratio Rank: 37
NTSI Calmar Ratio Rank: 35
NTSI Martin Ratio Rank: 40

VOO

VOO Risk / Return Rank: 75
VOO Sharpe Ratio Rank: 77
VOO Sortino Ratio Rank: 75
VOO Omega Ratio Rank: 76
VOO Calmar Ratio Rank: 68
VOO Martin Ratio Rank: 80

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.

NTSI vs. VOO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for WisdomTree International Efficient Core Fund (NTSI) 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.

	NTSI	VOO	Difference
Sharpe ratio Return per unit of total volatility	1.40	2.53	-1.13
Sortino ratio Return per unit of downside risk	1.97	3.43	-1.46
Omega ratio Gain probability vs. loss probability	1.25	1.46	-0.21
Calmar ratio Return relative to maximum drawdown	1.75	3.42	-1.67
Martin ratio Return relative to average drawdown	6.41	15.95	-9.53
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

NTSI vs. VOO - Sharpe Ratio Comparison

The current NTSI Sharpe Ratio is 1.40, which is lower than the VOO Sharpe Ratio of 2.53. The chart below compares the historical Sharpe Ratios of NTSI 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

	NTSI	VOO	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.40	2.53	-1.13
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.38	0.85	-0.48
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.87	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.39	0.89	-0.50

Drawdowns

NTSI vs. VOO - Drawdown Comparison

The maximum NTSI drawdown since its inception was -34.01%, roughly equal to the maximum VOO drawdown of -33.99%. Use the drawdown chart below to compare losses from any high point for NTSI and VOO.

Drawdown Indicators

	NTSI	VOO	Difference
Max Drawdown Largest peak-to-trough decline	-34.01%	-33.99%	-0.02%
Max Drawdown (1Y) Largest decline over 1 year	-12.33%	-8.90%	-3.43%
Max Drawdown (3Y) Largest decline over 3 years	-13.69%	-18.69%	+5.00%
Max Drawdown (5Y) Largest decline over 5 years	-34.01%	-24.52%	-9.49%
Max Drawdown (10Y) Largest decline over 10 years	—	-33.99%	—
Current Drawdown Current decline from peak	-1.75%	0.00%	-1.75%
Average Drawdown Average peak-to-trough decline	-9.19%	-3.69%	-5.50%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.37%	1.91%	+1.46%

Volatility

NTSI vs. VOO - Volatility Comparison

WisdomTree International Efficient Core Fund (NTSI) has a higher volatility of 5.11% compared to Vanguard S&P 500 ETF (VOO) at 2.74%. This indicates that NTSI'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

	NTSI	VOO	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.11%	2.74%	+2.37%
Volatility (6M) Calculated over the trailing 6-month period	12.60%	8.88%	+3.72%
Volatility (1Y) Calculated over the trailing 1-year period	14.94%	11.78%	+3.16%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	15.68%	16.81%	-1.13%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	15.64%	18.01%	-2.37%

NTSI vs. VOO - Expense Ratio Comparison

NTSI has a 0.26% expense ratio, which is higher than VOO's 0.03% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

NTSI vs. VOO - Dividend Comparison

NTSI's dividend yield for the trailing twelve months is around 3.49%, more than VOO's 1.02% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
NTSI WisdomTree International Efficient Core Fund	3.49%	3.65%	2.92%	2.35%	2.66%	0.97%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
VOO Vanguard S&P 500 ETF	1.02%	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 NTSI and VOO in my portfolio?

NTSI and VOO have a correlation of 0.70, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, NTSI or VOO?

NTSI has higher volatility (5.11%) compared to VOO (2.74%). In terms of maximum drawdown, NTSI dropped -34.01% vs VOO's -33.99%.

Which ETF is better, NTSI or VOO?

On 5-year performance, VOO leads with 14.26% vs 5.89% for NTSI. On fees, VOO is cheaper at 0.03% per year. On volatility, VOO has been the lower-risk option at 2.74%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, NTSI or VOO?

Over the 5-year period, VOO has performed better with a 14.26% return vs 5.89%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, NTSI or VOO?

VOO is cheaper with a 0.03% expense ratio, compared with 0.26% for NTSI.

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

NTSI has the higher dividend yield at 3.49%, compared with 1.02% for VOO.

What is the main difference between NTSI and VOO?

NTSI is categorized as Global Allocation, while VOO is S&P 500. They also come from different issuers: WisdomTree and Vanguard. Their fees differ too: 0.26% for NTSI and 0.03% for VOO.

Which has better risk-adjusted returns?

VOO currently has the higher Sharpe Ratio (2.53 vs 1.40), 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.