FDTS vs. VIDI

Last updated Jun 13, 2026

FDTS (First Trust Developed Markets ex-US Small Cap AlphaDEX Fund) and VIDI (Vident International Equity Fund) are both exchange-traded funds - FDTS is a Foreign Small & Mid Cap Equities fund tracking the NASDAQ AlphaDEX DM Ex-US Small Cap Index, while VIDI is a Foreign Large Cap Equities fund tracking the Vident International Equity Index. Both are passively managed. Over the past 10 years, FDTS returned 10.96%/yr vs 11.15%/yr for VIDI. A 0.55 correlation means they provide meaningful diversification when combined. FDTS charges 0.80%/yr vs 0.59%/yr for VIDI.

Performance

FDTS vs. VIDI - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in First Trust Developed Markets ex-US Small Cap AlphaDEX Fund (FDTS) and Vident International Equity Fund (VIDI). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FDTS achieves a 18.78% return, which is significantly lower than VIDI's 20.00% return. Both investments have delivered pretty close results over the past 10 years, with FDTS having a 10.96% annualized return and VIDI not far ahead at 11.15%.

FDTS

• 1D: -0.17%
• 1M: -3.25%
• YTD: 18.78%
• 6M: 20.77%
• 1Y: 42.98%
• 3Y*: 24.70%
• 5Y*: 10.78%
• 10Y*: 10.96%

VIDI

• 1D: -0.14%
• 1M: 0.64%
• YTD: 20.00%
• 6M: 22.09%
• 1Y: 42.87%
• 3Y*: 25.18%
• 5Y*: 11.77%
• 10Y*: 11.15%

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

FDTS vs. VIDI - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FDTS First Trust Developed Markets ex-US Small Cap AlphaDEX Fund	18.78%	51.17%	2.44%	10.96%	-15.34%	11.79%	12.90%	18.71%	-23.71%	36.01%
VIDI Vident International Equity Fund	20.00%	41.83%	6.03%	18.92%	-13.83%	11.93%	1.18%	15.84%	-17.65%	33.56%

Correlation

The correlation between FDTS and VIDI is 0.81, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.81
Correlation (3Y) Calculated over the trailing 3-year period	0.79
Correlation (5Y) Calculated over the trailing 5-year period	0.70
Correlation (10Y) Calculated over the trailing 10-year period	0.58
Correlation (All Time) Calculated using the full available price history since Oct 30, 2013	0.55

Over the past year, FDTS and VIDI have become more correlated (0.81) than their long-term average of 0.55, meaning their price movements have been converging.

FDTS vs. VIDI - Sectors Allocation Comparison

Sectors	FDTS	VIDI
Industrials	23.0%	18.8%
Consumer Cyclical	18.4%	10.4%
Technology	13.4%	13.7%
Financial Services	11.7%	18.5%
Basic Materials	11.2%	8.4%
Consumer Defensive	5.0%	6.2%
Real Estate	4.3%	0.8%
Energy	4.3%	8.0%
Healthcare	3.0%	6.1%
Communication Services	3.0%	6.0%
Utilities	2.7%	3.1%

Return for Risk

FDTS vs. VIDI — Risk / Return Rank

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

FDTS

FDTS Risk / Return Rank: 79
FDTS Sharpe Ratio Rank: 84
FDTS Sortino Ratio Rank: 81
FDTS Omega Ratio Rank: 81
FDTS Calmar Ratio Rank: 76
FDTS Martin Ratio Rank: 72

VIDI

VIDI Risk / Return Rank: 89
VIDI Sharpe Ratio Rank: 92
VIDI Sortino Ratio Rank: 90
VIDI Omega Ratio Rank: 91
VIDI Calmar Ratio Rank: 86
VIDI Martin Ratio Rank: 86

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.

FDTS vs. VIDI - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for First Trust Developed Markets ex-US Small Cap AlphaDEX Fund (FDTS) and Vident International Equity Fund (VIDI). 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.

	FDTS	VIDI	Difference
Sharpe ratio: Return per unit of total volatility	2.37	2.81	-0.44
Sortino ratio: Return per unit of downside risk	3.15	3.69	-0.54
Omega ratio: Gain probability vs. loss probability	1.42	1.52	-0.10
Calmar ratio: Return relative to maximum drawdown	3.43	4.28	-0.85
Martin ratio: Return relative to average drawdown	11.78	15.89	-4.11

FDTS vs. VIDI - Sharpe Ratio Comparison

The current FDTS Sharpe Ratio is 2.37, which is comparable to the VIDI Sharpe Ratio of 2.81. The chart below compares the historical Sharpe Ratios of FDTS and VIDI, 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

FDTS vs. VIDI - Drawdown Comparison

The maximum FDTS drawdown since its inception was -51.26%, which is greater than VIDI's maximum drawdown of -48.39%. Use the drawdown chart below to compare losses from any high point for FDTS and VIDI.

Drawdown Indicators

	FDTS	VIDI	Difference
Max Drawdown Largest peak-to-trough decline	-51.26%	-48.39%	-2.87%
Max Drawdown (1Y) Largest decline over 1 year	-12.61%	-10.07%	-2.54%
Max Drawdown (3Y) Largest decline over 3 years	-13.19%	-14.54%	+1.35%
Max Drawdown (5Y) Largest decline over 5 years	-33.11%	-29.44%	-3.67%
Max Drawdown (10Y) Largest decline over 10 years	-51.26%	-48.39%	-2.87%
Current Drawdown Current decline from peak	-4.77%	-3.10%	-1.67%
Average Drawdown Average peak-to-trough decline	-10.64%	-10.38%	-0.26%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.66%	2.71%	+0.95%

Volatility

FDTS vs. VIDI - Volatility Comparison

First Trust Developed Markets ex-US Small Cap AlphaDEX Fund (FDTS) has a higher volatility of 8.44% compared to Vident International Equity Fund (VIDI) at 6.46%. This indicates that FDTS's price experiences larger fluctuations and is considered to be riskier than VIDI based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FDTS	VIDI	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.44%	6.46%	+1.98%
Volatility (6M) Calculated over the trailing 6-month period	15.54%	13.05%	+2.49%
Volatility (1Y) Calculated over the trailing 1-year period	18.27%	15.35%	+2.92%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	29.42%	16.10%	+13.32%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	24.92%	18.06%	+6.86%

FDTS vs. VIDI - Expense Ratio Comparison

FDTS has a 0.80% expense ratio, which is higher than VIDI's 0.59% expense ratio.

Dividends

FDTS vs. VIDI - Dividend Comparison

FDTS's dividend yield for the trailing twelve months is around 2.53%, less than VIDI's 3.70% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FDTS First Trust Developed Markets ex-US Small Cap AlphaDEX Fund	2.53%	2.94%	3.94%	2.90%	3.71%	3.01%	2.02%	2.30%	1.96%	2.08%	1.78%	1.73%
VIDI Vident International Equity Fund	3.70%	4.26%	4.93%	4.14%	5.85%	4.62%	2.51%	3.35%	2.80%	2.21%	1.92%	2.25%

Frequently Asked Questions

Can I hold both FDTS and VIDI in my portfolio?

FDTS and VIDI have a correlation of 0.81, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FDTS or VIDI?

FDTS has higher volatility (8.44%) compared to VIDI (6.46%). In terms of maximum drawdown, FDTS dropped -51.26% vs VIDI's -48.39%.

Which ETF is better, FDTS or VIDI?

On 10-year performance, VIDI leads with 11.15% vs 10.96% for FDTS. On fees, VIDI is cheaper at 0.59% per year. On volatility, VIDI has been the lower-risk option at 6.46%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, FDTS or VIDI?

Over the 10-year period, VIDI has performed better with a 11.15% return vs 10.96%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, FDTS or VIDI?

VIDI is cheaper with a 0.59% expense ratio, compared with 0.80% for FDTS.

Which ETF pays a higher dividend yield, FDTS or VIDI?

VIDI has the higher dividend yield at 3.70%, compared with 2.53% for FDTS.

What is the main difference between FDTS and VIDI?

FDTS is categorized as Foreign Small & Mid Cap Equities, while VIDI is Foreign Large Cap Equities. FDTS tracks NASDAQ AlphaDEX DM Ex-US Small Cap Index, while VIDI tracks Vident International Equity Index. They also come from different issuers: First Trust and Vident. Their fees differ too: 0.80% for FDTS and 0.59% for VIDI.

Which has better risk-adjusted returns?

VIDI currently has the higher Sharpe Ratio (2.81 vs 2.37), 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.