FDTS vs. ROBT

Last updated Apr 2, 2026

Compare and contrast key facts about First Trust Developed Markets ex-US Small Cap AlphaDEX Fund (FDTS) and First Trust Nasdaq Artificial Intelligence & Robotics ETF (ROBT).

FDTS and ROBT are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. FDTS is a passively managed fund by First Trust that tracks the performance of the NASDAQ AlphaDEX DM Ex-US Small Cap Index. It was launched on Feb 15, 2012. ROBT is a passively managed fund by First Trust that tracks the performance of the Nasdaq CTA Artificial Intelligence and Robotics Index. It was launched on Feb 21, 2018. Both FDTS and ROBT are passive ETFs, meaning that they are not actively managed but aim to replicate the performance of the underlying index as closely as possible.

Performance

FDTS vs. ROBT - 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 First Trust Nasdaq Artificial Intelligence & Robotics ETF (ROBT). The values are adjusted to include any dividend payments, if applicable.

FDTS vs. ROBT - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
FDTS First Trust Developed Markets ex-US Small Cap AlphaDEX Fund	12.91%	51.17%	2.44%	10.96%	-15.34%	11.79%	12.90%	18.71%	-24.27%
ROBT First Trust Nasdaq Artificial Intelligence & Robotics ETF	-9.80%	15.16%	-0.41%	27.77%	-34.94%	9.91%	46.18%	34.28%	-13.98%

Returns By Period

In the year-to-date period, FDTS achieves a 12.91% return, which is significantly higher than ROBT's -9.80% return.

FDTS

• 1D: 1.68%
• 1M: -7.29%
• YTD: 12.91%
• 6M: 18.47%
• 1Y: 62.41%
• 3Y*: 22.00%
• 5Y*: 11.15%
• 10Y*: 10.61%

ROBT

• 1D: 1.35%
• 1M: -7.42%
• YTD: -9.80%
• 6M: -12.69%
• 1Y: 14.39%
• 3Y*: 3.45%
• 5Y*: -2.21%
• 10Y*: —

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

FDTS vs. ROBT - Expense Ratio Comparison

FDTS has a 0.80% expense ratio, which is higher than ROBT's 0.65% expense ratio.

FDTS

First Trust Developed Markets ex-US Small Cap AlphaDEX Fund

ROBT

First Trust Nasdaq Artificial Intelligence & Robotics ETF

Return for Risk

FDTS vs. ROBT — Risk / Return Rank

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

FDTS

FDTS Risk / Return Rank: 97
FDTS Sharpe Ratio Rank: 98
FDTS Sortino Ratio Rank: 98
FDTS Omega Ratio Rank: 97
FDTS Calmar Ratio Rank: 97
FDTS Martin Ratio Rank: 97

ROBT

ROBT Risk / Return Rank: 28
ROBT Sharpe Ratio Rank: 27
ROBT Sortino Ratio Rank: 30
ROBT Omega Ratio Rank: 27
ROBT Calmar Ratio Rank: 28
ROBT Martin Ratio Rank: 27

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. ROBT - 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 First Trust Nasdaq Artificial Intelligence & Robotics ETF (ROBT). 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.

	FDTS	ROBT	Difference
Sharpe ratio Return per unit of total volatility	3.33	0.52	+2.81
Sortino ratio Return per unit of downside risk	4.08	0.93	+3.14
Omega ratio Gain probability vs. loss probability	1.63	1.12	+0.51
Calmar ratio Return relative to maximum drawdown	4.90	0.69	+4.20
Martin ratio Return relative to average drawdown	19.52	2.20	+17.31
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FDTS vs. ROBT - Sharpe Ratio Comparison

The current FDTS Sharpe Ratio is 3.33, which is higher than the ROBT Sharpe Ratio of 0.52. The chart below compares the historical Sharpe Ratios of FDTS and ROBT, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	FDTS	ROBT	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.33	0.52	+2.81
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.38	-0.09	+0.47
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.43	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.36	0.23	+0.13

Correlation

The correlation between FDTS and ROBT is 0.54, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

FDTS vs. ROBT - Dividend Comparison

FDTS's dividend yield for the trailing twelve months is around 2.66%, while ROBT has not paid dividends to shareholders.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FDTS First Trust Developed Markets ex-US Small Cap AlphaDEX Fund	2.66%	2.94%	3.94%	2.90%	3.71%	3.01%	2.02%	2.30%	1.96%	2.08%	1.78%	1.73%
ROBT First Trust Nasdaq Artificial Intelligence & Robotics ETF	0.00%	0.00%	0.68%	0.23%	0.35%	0.06%	0.17%	0.42%	0.44%	0.00%	0.00%	0.00%

Drawdowns

FDTS vs. ROBT - Drawdown Comparison

The maximum FDTS drawdown since its inception was -51.26%, which is greater than ROBT's maximum drawdown of -44.47%. Use the drawdown chart below to compare losses from any high point for FDTS and ROBT.

Drawdown Indicators

	FDTS	ROBT	Difference
Max Drawdown Largest peak-to-trough decline	-51.26%	-44.47%	-6.79%
Max Drawdown (1Y) Largest decline over 1 year	-12.61%	-21.66%	+9.05%
Max Drawdown (5Y) Largest decline over 5 years	-33.11%	-43.26%	+10.15%
Max Drawdown (10Y) Largest decline over 10 years	-51.26%	—	—
Current Drawdown Current decline from peak	-8.43%	-20.02%	+11.59%
Average Drawdown Average peak-to-trough decline	-10.74%	-16.09%	+5.35%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.16%	6.82%	-3.66%

Volatility

FDTS vs. ROBT - Volatility Comparison

The current volatility for First Trust Developed Markets ex-US Small Cap AlphaDEX Fund (FDTS) is 7.16%, while First Trust Nasdaq Artificial Intelligence & Robotics ETF (ROBT) has a volatility of 8.69%. This indicates that FDTS experiences smaller price fluctuations and is considered to be less risky than ROBT based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FDTS	ROBT	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.16%	8.69%	-1.53%
Volatility (6M) Calculated over the trailing 6-month period	12.70%	18.27%	-5.57%
Volatility (1Y) Calculated over the trailing 1-year period	18.83%	27.73%	-8.90%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	29.15%	24.99%	+4.16%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	24.75%	25.50%	-0.75%