RNMC vs. IMCB

Last updated Jun 4, 2026

RNMC (First Trust Mid Cap US Equity Select ETF) and IMCB (iShares Morningstar Mid-Cap ETF) are both Mid Cap Blend Equities funds - RNMC tracks the Nasdaq Riskalyze Mid Cap US Equity Select Index while IMCB tracks the IMCB-US - Morningstar U.S. Mid Cap Index. Both are passively managed. Over the past 5 years, RNMC returned 4.93%/yr vs 8.81%/yr for IMCB. Their correlation of 0.85 suggests significant overlap in exposure. RNMC charges 0.60%/yr vs 0.04%/yr for IMCB.

Performance

RNMC vs. IMCB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in First Trust Mid Cap US Equity Select ETF (RNMC) and iShares Morningstar Mid-Cap ETF (IMCB). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RNMC achieves a -1.53% return, which is significantly lower than IMCB's 14.72% return.

RNMC

• 1D: -0.01%
• 1M: -1.54%
• YTD: -1.53%
• 6M: -1.11%
• 1Y: -1.10%
• 3Y*: 9.79%
• 5Y*: 4.93%
• 10Y*: —

IMCB

• 1D: -0.24%
• 1M: 5.22%
• YTD: 14.72%
• 6M: 14.61%
• 1Y: 23.24%
• 3Y*: 17.84%
• 5Y*: 8.81%
• 10Y*: 11.32%

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

RNMC vs. IMCB - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RNMC First Trust Mid Cap US Equity Select ETF	-1.53%	1.77%	14.98%	16.81%	-9.11%	26.08%	5.71%	28.00%	-12.85%	10.74%
IMCB iShares Morningstar Mid-Cap ETF	14.72%	10.25%	15.10%	16.37%	-16.09%	22.81%	13.35%	31.49%	-11.53%	10.97%

Correlation

The correlation between RNMC and IMCB is 0.80, 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	0.80
Correlation (3Y) Calculated over the trailing 3-year period	0.88
Correlation (5Y) Calculated over the trailing 5-year period	0.90
Correlation (All Time) Calculated using the full available price history since Jun 23, 2017	0.85

The correlation between RNMC and IMCB has been stable across timeframes, ranging from 0.80 to 0.90 - a consistent structural relationship.

RNMC vs. IMCB - Sectors Allocation Comparison

Sectors	RNMC	IMCB
Industrials	20.0%	19.0%
Consumer Cyclical	16.4%	9.0%
Financial Services	14.9%	12.0%
Healthcare	11.5%	7.9%
Technology	10.6%	21.3%
Real Estate	7.0%	4.3%
Basic Materials	5.0%	5.3%
Energy	5.0%	7.4%
Utilities	4.4%	6.2%
Communication Services	3.0%	2.3%
Consumer Defensive	2.3%	5.1%

Return for Risk

RNMC vs. IMCB — Risk / Return Rank

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

RNMC

RNMC Risk / Return Rank: 7
RNMC Sharpe Ratio Rank: 8
RNMC Sortino Ratio Rank: 7
RNMC Omega Ratio Rank: 7
RNMC Calmar Ratio Rank: 7
RNMC Martin Ratio Rank: 7

IMCB

IMCB Risk / Return Rank: 56
IMCB Sharpe Ratio Rank: 53
IMCB Sortino Ratio Rank: 53
IMCB Omega Ratio Rank: 51
IMCB Calmar Ratio Rank: 58
IMCB Martin Ratio Rank: 63

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.

RNMC vs. IMCB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for First Trust Mid Cap US Equity Select ETF (RNMC) and iShares Morningstar Mid-Cap ETF (IMCB). 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.

	RNMC	IMCB	Difference
Sharpe ratio: Return per unit of total volatility	-0.09	1.83	-1.92
Sortino ratio: Return per unit of downside risk	-0.04	2.61	-2.65
Omega ratio: Gain probability vs. loss probability	1.00	1.32	-0.32
Calmar ratio: Return relative to maximum drawdown	-0.14	2.90	-3.04
Martin ratio: Return relative to average drawdown	-0.31	11.50	-11.80
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

RNMC vs. IMCB - Sharpe Ratio Comparison

The current RNMC Sharpe Ratio is -0.09, which is lower than the IMCB Sharpe Ratio of 1.83. The chart below compares the historical Sharpe Ratios of RNMC and IMCB, 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

	RNMC	IMCB	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.09	1.83	-1.92
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.27	0.50	-0.23
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.58	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.39	0.50	-0.12

Drawdowns

RNMC vs. IMCB - Drawdown Comparison

The maximum RNMC drawdown since its inception was -43.57%, smaller than the maximum IMCB drawdown of -58.80%. Use the drawdown chart below to compare losses from any high point for RNMC and IMCB.

Drawdown Indicators

	RNMC	IMCB	Difference
Max Drawdown Largest peak-to-trough decline	-43.57%	-58.80%	+15.23%
Max Drawdown (1Y) Largest decline over 1 year	-7.81%	-8.05%	+0.24%
Max Drawdown (3Y) Largest decline over 3 years	-19.55%	-19.80%	+0.25%
Max Drawdown (5Y) Largest decline over 5 years	-21.25%	-25.15%	+3.90%
Max Drawdown (10Y) Largest decline over 10 years	—	-40.99%	—
Current Drawdown Current decline from peak	-7.32%	-0.24%	-7.08%
Average Drawdown Average peak-to-trough decline	-5.99%	-7.73%	+1.74%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.60%	2.03%	+1.57%

Volatility

RNMC vs. IMCB - Volatility Comparison

The current volatility for First Trust Mid Cap US Equity Select ETF (RNMC) is 3.07%, while iShares Morningstar Mid-Cap ETF (IMCB) has a volatility of 3.31%. This indicates that RNMC experiences smaller price fluctuations and is considered to be less risky than IMCB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RNMC	IMCB	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.07%	3.31%	-0.24%
Volatility (6M) Calculated over the trailing 6-month period	8.22%	9.58%	-1.36%
Volatility (1Y) Calculated over the trailing 1-year period	12.70%	12.75%	-0.05%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.09%	17.57%	+0.52%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.20%	19.65%	+1.55%

RNMC vs. IMCB - Expense Ratio Comparison

RNMC has a 0.60% expense ratio, which is higher than IMCB's 0.04% expense ratio.

Dividends

RNMC vs. IMCB - Dividend Comparison

RNMC's dividend yield for the trailing twelve months is around 0.91%, less than IMCB's 1.21% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IMCB iShares Morningstar Mid-Cap ETF	1.21%	1.42%	1.43%	1.55%	1.70%	1.08%	1.12%	1.32%	1.80%	1.31%	1.79%	1.47%
RNMC First Trust Mid Cap US Equity Select ETF	0.91%	0.75%	1.12%	1.47%	1.71%	1.21%	1.33%	1.68%	1.67%	0.67%	0.00%	0.00%

Frequently Asked Questions

Can I hold both RNMC and IMCB in my portfolio?

RNMC and IMCB have a correlation of 0.80, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RNMC or IMCB?

IMCB has higher volatility (3.31%) compared to RNMC (3.07%). In terms of maximum drawdown, RNMC dropped -43.57% vs IMCB's -58.80%.

Which ETF is better, RNMC or IMCB?

On 5-year performance, IMCB leads with 8.81% vs 4.93% for RNMC. On fees, IMCB is cheaper at 0.04% per year. On volatility, RNMC has been the lower-risk option at 3.07%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, RNMC or IMCB?

Over the 5-year period, IMCB has performed better with a 8.81% return vs 4.93%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, RNMC or IMCB?

IMCB is cheaper with a 0.04% expense ratio, compared with 0.60% for RNMC.

Which ETF pays a higher dividend yield, RNMC or IMCB?

IMCB has the higher dividend yield at 1.21%, compared with 0.91% for RNMC.

What is the main difference between RNMC and IMCB?

RNMC tracks Nasdaq Riskalyze Mid Cap US Equity Select Index, while IMCB tracks IMCB-US - Morningstar U.S. Mid Cap Index. They also come from different issuers: First Trust and iShares. Their fees differ too: 0.60% for RNMC and 0.04% for IMCB.

Which has better risk-adjusted returns?

IMCB currently has the higher Sharpe Ratio (1.83 vs -0.09), 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.