FDM vs. ISCB

Last updated Jun 3, 2026

FDM (First Trust Dow Jones Select MicroCap Index Fund) and ISCB (iShares Morningstar Small-Cap ETF) are both Small Cap Blend Equities funds - FDM tracks the Dow Jones Select Microcap Index while ISCB tracks the Morningstar US Small Cap Extended Index. Both are passively managed. Over the past 10 years, FDM returned 11.66%/yr vs 9.37%/yr for ISCB. Their correlation of 0.89 suggests significant overlap in exposure. FDM charges 0.60%/yr vs 0.04%/yr for ISCB.

Performance

FDM vs. ISCB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in First Trust Dow Jones Select MicroCap Index Fund (FDM) and iShares Morningstar Small-Cap ETF (ISCB). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FDM achieves a 9.82% return, which is significantly lower than ISCB's 12.19% return. Over the past 10 years, FDM has outperformed ISCB with an annualized return of 11.66%, while ISCB has yielded a comparatively lower 9.37% annualized return.

FDM

• 1D: 0.66%
• 1M: -2.23%
• YTD: 9.82%
• 6M: 12.70%
• 1Y: 32.32%
• 3Y*: 18.88%
• 5Y*: 8.84%
• 10Y*: 11.66%

ISCB

• 1D: 0.56%
• 1M: 2.81%
• YTD: 12.19%
• 6M: 13.62%
• 1Y: 32.30%
• 3Y*: 16.67%
• 5Y*: 5.93%
• 10Y*: 9.37%

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

FDM vs. ISCB - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FDM First Trust Dow Jones Select MicroCap Index Fund	9.82%	18.64%	13.00%	12.76%	-11.61%	35.08%	-4.04%	27.45%	-13.53%	8.72%
ISCB iShares Morningstar Small-Cap ETF	12.19%	12.46%	10.90%	19.51%	-19.04%	17.46%	6.29%	29.42%	-13.92%	12.95%

Correlation

The correlation between FDM and ISCB is 0.79, 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	0.79
Correlation (3Y) Calculated over the trailing 3-year period	0.87
Correlation (5Y) Calculated over the trailing 5-year period	0.89
Correlation (10Y) Calculated over the trailing 10-year period	0.89
Correlation (All Time) Calculated using the full available price history since Oct 3, 2005	0.89

The correlation between FDM and ISCB shifts across timeframes, from 0.79 (1 year) to 0.89 (5 years), reflecting how their relationship changes across market environments.

FDM vs. ISCB - Sectors Allocation Comparison

Sectors	FDM	ISCB
Financial Services	41.2%	15.9%
Industrials	16.4%	18.5%
Consumer Cyclical	10.0%	11.8%
Technology	6.2%	14.6%
Healthcare	6.2%	13.3%
Energy	5.0%	4.9%
Consumer Defensive	4.7%	3.4%
Basic Materials	4.2%	4.6%
Communication Services	3.7%	2.6%
Real Estate	1.4%	8.2%
Utilities	1.0%	2.3%

Return for Risk

FDM vs. ISCB — Risk / Return Rank

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

FDM

FDM Risk / Return Rank: 55
FDM Sharpe Ratio Rank: 49
FDM Sortino Ratio Rank: 52
FDM Omega Ratio Rank: 47
FDM Calmar Ratio Rank: 69
FDM Martin Ratio Rank: 59

ISCB

ISCB Risk / Return Rank: 60
ISCB Sharpe Ratio Rank: 58
ISCB Sortino Ratio Rank: 58
ISCB Omega Ratio Rank: 54
ISCB Calmar Ratio Rank: 67
ISCB Martin Ratio Rank: 65

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.

FDM vs. ISCB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for First Trust Dow Jones Select MicroCap Index Fund (FDM) and iShares Morningstar Small-Cap ETF (ISCB). 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.

	FDM	ISCB	Difference
Sharpe ratio Return per unit of total volatility	1.73	1.97	-0.24
Sortino ratio Return per unit of downside risk	2.52	2.81	-0.29
Omega ratio Gain probability vs. loss probability	1.30	1.34	-0.03
Calmar ratio Return relative to maximum drawdown	3.47	3.38	+0.09
Martin ratio Return relative to average drawdown	10.59	12.09	-1.50
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FDM vs. ISCB - Sharpe Ratio Comparison

The current FDM Sharpe Ratio is 1.73, which is comparable to the ISCB Sharpe Ratio of 1.97. The chart below compares the historical Sharpe Ratios of FDM and ISCB, 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

	FDM	ISCB	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.73	1.97	-0.24
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.42	0.28	+0.14
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.50	0.41	+0.09
Sharpe Ratio (All Time) Calculated using the full available price history	0.35	0.38	-0.03

Drawdowns

FDM vs. ISCB - Drawdown Comparison

The maximum FDM drawdown since its inception was -63.45%, roughly equal to the maximum ISCB drawdown of -61.25%. Use the drawdown chart below to compare losses from any high point for FDM and ISCB.

Drawdown Indicators

	FDM	ISCB	Difference
Max Drawdown Largest peak-to-trough decline	-63.45%	-61.25%	-2.20%
Max Drawdown (1Y) Largest decline over 1 year	-9.30%	-9.39%	+0.09%
Max Drawdown (3Y) Largest decline over 3 years	-23.47%	-26.22%	+2.75%
Max Drawdown (5Y) Largest decline over 5 years	-23.74%	-29.94%	+6.20%
Max Drawdown (10Y) Largest decline over 10 years	-47.76%	-44.18%	-3.58%
Current Drawdown Current decline from peak	-2.23%	0.00%	-2.23%
Average Drawdown Average peak-to-trough decline	-11.35%	-9.80%	-1.55%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.05%	2.63%	+0.42%

Volatility

FDM vs. ISCB - Volatility Comparison

First Trust Dow Jones Select MicroCap Index Fund (FDM) and iShares Morningstar Small-Cap ETF (ISCB) have volatilities of 4.22% and 4.27%, 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

	FDM	ISCB	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.22%	4.27%	-0.05%
Volatility (6M) Calculated over the trailing 6-month period	13.03%	11.44%	+1.59%
Volatility (1Y) Calculated over the trailing 1-year period	18.77%	16.50%	+2.27%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.37%	21.39%	-0.02%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	23.35%	22.69%	+0.66%

FDM vs. ISCB - Expense Ratio Comparison

FDM has a 0.60% expense ratio, which is higher than ISCB's 0.04% expense ratio.

Dividends

FDM vs. ISCB - Dividend Comparison

FDM's dividend yield for the trailing twelve months is around 1.25%, which matches ISCB's 1.26% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FDM First Trust Dow Jones Select MicroCap Index Fund	1.25%	1.43%	1.56%	1.81%	1.80%	1.08%	1.68%	1.37%	1.26%	0.97%	1.13%	1.45%
ISCB iShares Morningstar Small-Cap ETF	1.26%	1.38%	1.31%	1.49%	1.63%	1.26%	1.26%	1.25%	1.60%	1.24%	1.58%	1.40%

Frequently Asked Questions

Can I hold both FDM and ISCB in my portfolio?

FDM and ISCB have a correlation of 0.79, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FDM or ISCB?

ISCB has higher volatility (4.27%) compared to FDM (4.22%). In terms of maximum drawdown, FDM dropped -63.45% vs ISCB's -61.25%.

Which ETF is better, FDM or ISCB?

On 10-year performance, FDM leads with 11.66% vs 9.37% for ISCB. On fees, ISCB is cheaper at 0.04% 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, FDM or ISCB?

Over the 10-year period, FDM has performed better with a 11.66% return vs 9.37%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, FDM or ISCB?

ISCB is cheaper with a 0.04% expense ratio, compared with 0.60% for FDM.

Which ETF pays a higher dividend yield, FDM or ISCB?

FDM and ISCB have nearly identical dividend yields, around 1.25%.

What is the main difference between FDM and ISCB?

FDM tracks Dow Jones Select Microcap Index, while ISCB tracks Morningstar US Small Cap Extended Index. They also come from different issuers: First Trust and iShares. Their fees differ too: 0.60% for FDM and 0.04% for ISCB.

Which has better risk-adjusted returns?

ISCB currently has the higher Sharpe Ratio (1.97 vs 1.73), 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.