THD vs. VOO

Last updated Jun 24, 2026

THD (iShares MSCI Thailand ETF) and VOO (Vanguard S&P 500 ETF) are both exchange-traded funds - THD is a Asia Pacific Equities fund tracking the MSCI Thailand Investable Market Index, while VOO is a S&P 500 fund tracking the S&P 500 Index. Both are passively managed. Over the past 10 years, THD returned 3.39%/yr vs 15.61%/yr for VOO. A 0.51 correlation means they provide meaningful diversification when combined. THD charges 0.59%/yr vs 0.03%/yr for VOO.

Performance

THD vs. VOO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares MSCI Thailand ETF (THD) 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, THD achieves a 18.84% return, which is significantly higher than VOO's 8.19% return. Over the past 10 years, THD has underperformed VOO with an annualized return of 3.39%, while VOO has yielded a comparatively higher 15.61% annualized return.

THD

• 1D: -3.05%
• 1M: -2.31%
• YTD: 18.84%
• 6M: 16.38%
• 1Y: 47.78%
• 3Y*: 5.36%
• 5Y*: 0.72%
• 10Y*: 3.39%

VOO

• 1D: -1.42%
• 1M: -1.34%
• YTD: 8.19%
• 6M: 7.24%
• 1Y: 23.69%
• 3Y*: 20.78%
• 5Y*: 13.13%
• 10Y*: 15.61%

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

THD vs. VOO - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
THD iShares MSCI Thailand ETF	18.84%	2.36%	-2.21%	-12.63%	1.22%	1.87%	-9.89%	8.32%	-8.25%	31.45%
VOO Vanguard S&P 500 ETF	8.19%	17.82%	24.98%	26.32%	-18.17%	28.79%	18.32%	31.37%	-4.50%	21.77%

Correlation

The correlation between THD and VOO is 0.44, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.44
Correlation (3Y) Calculated over the trailing 3-year period	0.41
Correlation (5Y) Calculated over the trailing 5-year period	0.42
Correlation (10Y) Calculated over the trailing 10-year period	0.46
Correlation (All Time) Calculated using the full available price history since Sep 9, 2010	0.51

The correlation between THD and VOO shifts across timeframes, from 0.41 (3 years) to 0.51 (all time), reflecting how their relationship changes across market environments.

THD vs. VOO - Sectors Allocation Comparison

Sectors	THD	VOO
Industrials	31.1%	7.6%
Energy	13.5%	3.2%
Financial Services	11.1%	10.9%
Communication Services	9.8%	10.5%
Consumer Defensive	7.5%	4.5%
Utilities	7.0%	2.5%
Healthcare	6.1%	8.3%
Real Estate	5.0%	1.8%
Consumer Cyclical	4.7%	9.8%
Basic Materials	2.9%	1.7%
Technology	1.2%	39.1%

Return for Risk

THD vs. VOO — Risk / Return Rank

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

THD

THD Risk / Return Rank: 66
THD Sharpe Ratio Rank: 69
THD Sortino Ratio Rank: 65
THD Omega Ratio Rank: 60
THD Calmar Ratio Rank: 76
THD Martin Ratio Rank: 63

VOO

VOO Risk / Return Rank: 59
VOO Sharpe Ratio Rank: 59
VOO Sortino Ratio Rank: 56
VOO Omega Ratio Rank: 58
VOO Calmar Ratio Rank: 56
VOO Martin Ratio Rank: 67

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.

THD vs. VOO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares MSCI Thailand ETF (THD) 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.

	THD	VOO	Difference
Sharpe ratio: Return per unit of total volatility	2.08	1.91	+0.16
Sortino ratio: Return per unit of downside risk	2.78	2.60	+0.18
Omega ratio: Gain probability vs. loss probability	1.34	1.35	-0.01
Calmar ratio: Return relative to maximum drawdown	3.66	2.67	+0.98
Martin ratio: Return relative to average drawdown	10.63	11.96	-1.33

THD vs. VOO - Sharpe Ratio Comparison

The current THD Sharpe Ratio is 2.08, which is comparable to the VOO Sharpe Ratio of 1.91. The chart below compares the historical Sharpe Ratios of THD 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

THD vs. VOO - Drawdown Comparison

The maximum THD drawdown since its inception was -64.22%, which is greater than VOO's maximum drawdown of -33.99%. Use the drawdown chart below to compare losses from any high point for THD and VOO.

Drawdown Indicators

	THD	VOO	Difference
Max Drawdown Largest peak-to-trough decline	-64.22%	-33.99%	-30.23%
Max Drawdown (1Y) Largest decline over 1 year	-13.12%	-8.90%	-4.22%
Max Drawdown (3Y) Largest decline over 3 years	-34.11%	-18.69%	-15.42%
Max Drawdown (5Y) Largest decline over 5 years	-40.24%	-24.52%	-15.72%
Max Drawdown (10Y) Largest decline over 10 years	-49.32%	-33.99%	-15.33%
Current Drawdown Current decline from peak	-12.73%	-3.14%	-9.59%
Average Drawdown Average peak-to-trough decline	-18.25%	-3.68%	-14.57%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.51%	1.99%	+2.52%

Volatility

THD vs. VOO - Volatility Comparison

iShares MSCI Thailand ETF (THD) has a higher volatility of 6.39% compared to Vanguard S&P 500 ETF (VOO) at 4.83%. This indicates that THD'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

	THD	VOO	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.39%	4.83%	+1.56%
Volatility (6M) Calculated over the trailing 6-month period	18.95%	9.82%	+9.13%
Volatility (1Y) Calculated over the trailing 1-year period	23.10%	12.46%	+10.64%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.94%	16.91%	+3.03%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.58%	18.02%	+3.56%

THD vs. VOO - Expense Ratio Comparison

THD has a 0.59% expense ratio, which is higher than VOO's 0.03% expense ratio.

Dividends

THD vs. VOO - Dividend Comparison

THD's dividend yield for the trailing twelve months is around 3.65%, more than VOO's 1.05% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
THD iShares MSCI Thailand ETF	3.65%	3.36%	3.15%	2.92%	2.41%	3.16%	2.31%	2.42%	2.57%	2.16%	2.61%	3.58%
VOO Vanguard S&P 500 ETF	1.05%	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 THD and VOO in my portfolio?

THD and VOO have a correlation of 0.44, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, THD or VOO?

THD has higher volatility (6.39%) compared to VOO (4.83%). In terms of maximum drawdown, THD dropped -64.22% vs VOO's -33.99%.

Which ETF is better, THD or VOO?

On 10-year performance, VOO leads with 15.61% vs 3.39% for THD. On fees, VOO is cheaper at 0.03% per year. On volatility, VOO has been the lower-risk option at 4.83%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, THD or VOO?

Over the 10-year period, VOO has performed better with a 15.61% return vs 3.39%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, THD or VOO?

VOO is cheaper with a 0.03% expense ratio, compared with 0.59% for THD.

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

THD has the higher dividend yield at 3.65%, compared with 1.05% for VOO.

What is the main difference between THD and VOO?

THD is categorized as Asia Pacific Equities, while VOO is S&P 500. THD tracks MSCI Thailand Investable Market Index, while VOO tracks S&P 500 Index. They also come from different issuers: iShares and Vanguard. Their fees differ too: 0.59% for THD and 0.03% for VOO.

Which has better risk-adjusted returns?

THD currently has the higher Sharpe Ratio (2.08 vs 1.91), 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.