DRMBX vs. DISSX

Last updated Jun 4, 2026

DRMBX (BNY Mellon AMT-Free Municipal Bond Fund) and DISSX (BNY Mellon Smallcap Stock Index Fund) are both mutual funds - DRMBX is a Municipal Bonds fund managed by BNY Mellon, while DISSX is a Small Cap Blend Equities fund managed by BNY Mellon. Over the past 10 years, DRMBX returned 2.14%/yr vs 10.07%/yr for DISSX. At a correlation of -0.09, they often move in opposite directions. DRMBX charges 0.49%/yr vs 0.50%/yr for DISSX.

Performance

DRMBX vs. DISSX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in BNY Mellon AMT-Free Municipal Bond Fund (DRMBX) and BNY Mellon Smallcap Stock Index Fund (DISSX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, DRMBX achieves a 1.97% return, which is significantly lower than DISSX's 16.16% return. Over the past 10 years, DRMBX has underperformed DISSX with an annualized return of 2.14%, while DISSX has yielded a comparatively higher 10.07% annualized return.

DRMBX

• 1D: 0.15%
• 1M: 0.83%
• YTD: 1.97%
• 6M: 2.36%
• 1Y: 8.02%
• 3Y*: 4.15%
• 5Y*: 0.94%
• 10Y*: 2.14%

DISSX

• 1D: 0.90%
• 1M: 2.55%
• YTD: 16.16%
• 6M: 14.84%
• 1Y: 32.05%
• 3Y*: 13.35%
• 5Y*: 4.92%
• 10Y*: 10.07%

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

DRMBX vs. DISSX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
DRMBX BNY Mellon AMT-Free Municipal Bond Fund	1.97%	4.47%	2.37%	5.93%	-9.77%	1.26%	4.86%	8.34%	0.74%	5.62%
DISSX BNY Mellon Smallcap Stock Index Fund	16.16%	5.41%	6.87%	14.24%	-16.71%	26.41%	10.92%	22.28%	-8.30%	12.40%

Correlation

The correlation between DRMBX and DISSX is 0.14, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.14
Correlation (3Y) Calculated over the trailing 3-year period	0.14
Correlation (5Y) Calculated over the trailing 5-year period	0.10
Correlation (10Y) Calculated over the trailing 10-year period	-0.01
Correlation (All Time) Calculated using the full available price history since Jul 1, 1997	-0.09

The correlation between DRMBX and DISSX shifts across timeframes, from -0.09 (all time) to 0.14 (3 years), reflecting how their relationship changes across market environments.

Return for Risk

DRMBX vs. DISSX — Risk / Return Rank

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

DRMBX

DRMBX Risk / Return Rank: 76
DRMBX Sharpe Ratio Rank: 85
DRMBX Sortino Ratio Rank: 91
DRMBX Omega Ratio Rank: 94
DRMBX Calmar Ratio Rank: 56
DRMBX Martin Ratio Rank: 52

DISSX

DISSX Risk / Return Rank: 56
DISSX Sharpe Ratio Rank: 45
DISSX Sortino Ratio Rank: 45
DISSX Omega Ratio Rank: 39
DISSX Calmar Ratio Rank: 84
DISSX Martin Ratio Rank: 68

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.

DRMBX vs. DISSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for BNY Mellon AMT-Free Municipal Bond Fund (DRMBX) and BNY Mellon Smallcap Stock Index Fund (DISSX). 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.

	DRMBX	DISSX	Difference
Sharpe ratio: Return per unit of total volatility	2.77	1.96	+0.82
Sortino ratio: Return per unit of downside risk	4.44	2.83	+1.61
Omega ratio: Gain probability vs. loss probability	1.73	1.34	+0.39
Calmar ratio: Return relative to maximum drawdown	2.87	3.93	-1.06
Martin ratio: Return relative to average drawdown	10.53	13.11	-2.58
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

DRMBX vs. DISSX - Sharpe Ratio Comparison

The current DRMBX Sharpe Ratio is 2.77, which is higher than the DISSX Sharpe Ratio of 1.96. The chart below compares the historical Sharpe Ratios of DRMBX and DISSX, 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

	DRMBX	DISSX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.77	1.96	+0.82
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.24	0.23	+0.01
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.53	0.44	+0.10
Sharpe Ratio (All Time) Calculated using the full available price history	1.15	0.41	+0.74

Drawdowns

DRMBX vs. DISSX - Drawdown Comparison

The maximum DRMBX drawdown since its inception was -14.48%, smaller than the maximum DISSX drawdown of -58.30%. Use the drawdown chart below to compare losses from any high point for DRMBX and DISSX.

Drawdown Indicators

	DRMBX	DISSX	Difference
Max Drawdown Largest peak-to-trough decline	-14.48%	-58.30%	+43.82%
Max Drawdown (1Y) Largest decline over 1 year	-2.81%	-8.75%	+5.94%
Max Drawdown (3Y) Largest decline over 3 years	-6.26%	-29.02%	+22.76%
Max Drawdown (5Y) Largest decline over 5 years	-14.48%	-29.02%	+14.54%
Max Drawdown (10Y) Largest decline over 10 years	-14.48%	-44.45%	+29.97%
Current Drawdown Current decline from peak	-0.02%	-0.04%	+0.02%
Average Drawdown Average peak-to-trough decline	-1.98%	-9.57%	+7.59%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.76%	2.62%	-1.86%

Volatility

DRMBX vs. DISSX - Volatility Comparison

The current volatility for BNY Mellon AMT-Free Municipal Bond Fund (DRMBX) is 1.15%, while BNY Mellon Smallcap Stock Index Fund (DISSX) has a volatility of 4.49%. This indicates that DRMBX experiences smaller price fluctuations and is considered to be less risky than DISSX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	DRMBX	DISSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.15%	4.49%	-3.34%
Volatility (6M) Calculated over the trailing 6-month period	2.16%	11.73%	-9.57%
Volatility (1Y) Calculated over the trailing 1-year period	2.92%	17.58%	-14.66%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.00%	21.49%	-17.49%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.04%	23.17%	-19.13%

DRMBX vs. DISSX - Expense Ratio Comparison

DRMBX has a 0.49% expense ratio, which is lower than DISSX's 0.50% expense ratio.

Dividends

DRMBX vs. DISSX - Dividend Comparison

DRMBX's dividend yield for the trailing twelve months is around 3.40%, less than DISSX's 13.28% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
DISSX BNY Mellon Smallcap Stock Index Fund	13.28%	15.42%	14.79%	8.20%	13.87%	10.72%	7.61%	8.35%	13.18%	7.40%	6.49%	11.30%
DRMBX BNY Mellon AMT-Free Municipal Bond Fund	3.40%	4.30%	3.02%	2.30%	2.06%	1.93%	2.37%	3.30%	2.95%	3.07%	3.24%	3.47%

Frequently Asked Questions

Can I hold both DRMBX and DISSX in my portfolio?

DRMBX and DISSX have a correlation of 0.14, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, DRMBX or DISSX?

DISSX has higher volatility (4.49%) compared to DRMBX (1.15%). In terms of maximum drawdown, DRMBX dropped -14.48% vs DISSX's -58.30%.

Which has better risk-adjusted returns?

DRMBX currently has the higher Sharpe Ratio (2.77 vs 1.96), 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.