PESPX vs. DISSX

Last updated Jun 23, 2026

PESPX (BNY Mellon MidCap Index Fund) and DISSX (BNY Mellon Smallcap Stock Index Fund) are both mutual funds - PESPX is a Mid Cap Blend Equities fund managed by BNY Mellon, while DISSX is a Small Cap Blend Equities fund managed by BNY Mellon. Over the past 10 years, PESPX returned 11.09%/yr vs 10.37%/yr for DISSX. With a 0.95 correlation, they move nearly in lockstep. Both charge a 0.50% expense ratio.

Performance

PESPX vs. DISSX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in BNY Mellon MidCap Index Fund (PESPX) 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, PESPX achieves a 15.05% return, which is significantly lower than DISSX's 19.49% return. Over the past 10 years, PESPX has outperformed DISSX with an annualized return of 11.09%, while DISSX has yielded a comparatively lower 10.37% annualized return.

PESPX

• 1D: 1.11%
• 1M: 3.30%
• YTD: 15.05%
• 6M: 12.56%
• 1Y: 26.30%
• 3Y*: 13.93%
• 5Y*: 8.33%
• 10Y*: 11.09%

DISSX

• 1D: 1.81%
• 1M: 4.50%
• YTD: 19.49%
• 6M: 16.38%
• 1Y: 36.09%
• 3Y*: 13.66%
• 5Y*: 6.30%
• 10Y*: 10.37%

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

PESPX vs. DISSX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
PESPX BNY Mellon MidCap Index Fund	15.05%	6.90%	11.88%	14.75%	-13.67%	24.34%	13.30%	40.74%	-10.55%	15.99%
DISSX BNY Mellon Smallcap Stock Index Fund	19.49%	5.41%	6.87%	14.24%	-16.71%	26.41%	10.92%	22.28%	-8.30%	12.40%

Correlation

The correlation between PESPX and DISSX is 0.94, 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	0.94
Correlation (3Y) Calculated over the trailing 3-year period	0.95
Correlation (5Y) Calculated over the trailing 5-year period	0.96
Correlation (10Y) Calculated over the trailing 10-year period	0.95
Correlation (All Time) Calculated using the full available price history since Jan 3, 2006	0.95

The correlation between PESPX and DISSX has been stable across timeframes, ranging from 0.94 to 0.96 - a consistent structural relationship.

Return for Risk

PESPX vs. DISSX — Risk / Return Rank

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

PESPX

PESPX Risk / Return Rank: 48
PESPX Sharpe Ratio Rank: 38
PESPX Sortino Ratio Rank: 40
PESPX Omega Ratio Rank: 36
PESPX Calmar Ratio Rank: 67
PESPX Martin Ratio Rank: 58

DISSX

DISSX Risk / Return Rank: 66
DISSX Sharpe Ratio Rank: 55
DISSX Sortino Ratio Rank: 58
DISSX Omega Ratio Rank: 48
DISSX Calmar Ratio Rank: 88
DISSX Martin Ratio Rank: 80

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.

PESPX vs. DISSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for BNY Mellon MidCap Index Fund (PESPX) 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.

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.

	PESPX	DISSX	Difference
Sharpe ratio: Return per unit of total volatility	1.68	2.03	-0.35
Sortino ratio: Return per unit of downside risk	2.44	2.93	-0.49
Omega ratio: Gain probability vs. loss probability	1.30	1.35	-0.05
Calmar ratio: Return relative to maximum drawdown	2.99	4.12	-1.13
Martin ratio: Return relative to average drawdown	10.85	13.88	-3.03

PESPX vs. DISSX - Sharpe Ratio Comparison

The current PESPX Sharpe Ratio is 1.68, which is comparable to the DISSX Sharpe Ratio of 2.03. The chart below compares the historical Sharpe Ratios of PESPX 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.

Drawdowns

PESPX vs. DISSX - Drawdown Comparison

The maximum PESPX drawdown since its inception was -61.56%, which is greater than DISSX's maximum drawdown of -58.30%. Use the drawdown chart below to compare losses from any high point for PESPX and DISSX.

Drawdown Indicators

	PESPX	DISSX	Difference
Max Drawdown Largest peak-to-trough decline	-61.56%	-58.30%	-3.26%
Max Drawdown (1Y) Largest decline over 1 year	-8.86%	-8.75%	-0.11%
Max Drawdown (3Y) Largest decline over 3 years	-25.18%	-29.02%	+3.84%
Max Drawdown (5Y) Largest decline over 5 years	-25.18%	-29.02%	+3.84%
Max Drawdown (10Y) Largest decline over 10 years	-42.09%	-44.45%	+2.36%
Current Drawdown Current decline from peak	-0.45%	-0.08%	-0.37%
Average Drawdown Average peak-to-trough decline	-10.35%	-9.55%	-0.80%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.44%	2.59%	-0.15%

Volatility

PESPX vs. DISSX - Volatility Comparison

The current volatility for BNY Mellon MidCap Index Fund (PESPX) is 4.85%, while BNY Mellon Smallcap Stock Index Fund (DISSX) has a volatility of 5.19%. This indicates that PESPX 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

	PESPX	DISSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.85%	5.19%	-0.34%
Volatility (6M) Calculated over the trailing 6-month period	11.69%	12.14%	-0.45%
Volatility (1Y) Calculated over the trailing 1-year period	15.77%	17.79%	-2.02%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.70%	21.51%	-1.81%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.61%	23.19%	-1.58%

PESPX vs. DISSX - Expense Ratio Comparison

Both PESPX and DISSX have an expense ratio of 0.50%.

Dividends

PESPX vs. DISSX - Dividend Comparison

PESPX's dividend yield for the trailing twelve months is around 10.64%, less than DISSX's 12.91% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
DISSX BNY Mellon Smallcap Stock Index Fund	12.91%	15.42%	14.79%	8.20%	13.87%	10.72%	7.61%	8.35%	13.18%	7.40%	6.49%	11.30%
PESPX BNY Mellon MidCap Index Fund	10.64%	12.24%	11.73%	8.19%	16.04%	15.10%	11.21%	21.60%	14.61%	9.22%	1.09%	1.34%

Frequently Asked Questions

Can I hold both PESPX and DISSX in my portfolio?

With a correlation of 0.94, PESPX and DISSX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, PESPX or DISSX?

DISSX has higher volatility (5.19%) compared to PESPX (4.85%). In terms of maximum drawdown, PESPX dropped -61.56% vs DISSX's -58.30%.

Which has better risk-adjusted returns?

DISSX currently has the higher Sharpe Ratio (2.03 vs 1.68), 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.