MSSMX vs. MPEGX

Last updated Jun 23, 2026

MSSMX (Morgan Stanley Institutional Inception Fund Class A) and MPEGX (Morgan Stanley Institutional Fund Trust Discovery Portfolio) are both mutual funds - MSSMX is a Small Cap Growth Equities fund actively managed by Morgan Stanley, while MPEGX is a Mid Cap Growth Equities fund managed by Morgan Stanley. Over the past 10 years, MSSMX returned 15.93%/yr vs 14.09%/yr for MPEGX. Their correlation of 0.90 suggests significant overlap in exposure. MSSMX charges 1.35%/yr vs 0.72%/yr for MPEGX.

Performance

MSSMX vs. MPEGX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Morgan Stanley Institutional Inception Fund Class A (MSSMX) and Morgan Stanley Institutional Fund Trust Discovery Portfolio (MPEGX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MSSMX achieves a 4.06% return, which is significantly higher than MPEGX's -0.49% return. Over the past 10 years, MSSMX has outperformed MPEGX with an annualized return of 15.93%, while MPEGX has yielded a comparatively lower 14.09% annualized return.

MSSMX

• 1D: 2.51%
• 1M: -0.27%
• YTD: 4.06%
• 6M: -1.96%
• 1Y: 6.07%
• 3Y*: 13.92%
• 5Y*: -9.24%
• 10Y*: 15.93%

MPEGX

• 1D: 1.75%
• 1M: -2.74%
• YTD: -0.49%
• 6M: -5.59%
• 1Y: -2.66%
• 3Y*: 22.40%
• 5Y*: -5.86%
• 10Y*: 14.09%

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

MSSMX vs. MPEGX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MSSMX Morgan Stanley Institutional Inception Fund Class A	4.06%	0.76%	29.15%	54.22%	-59.57%	-4.29%	149.49%	77.58%	-0.03%	22.42%
MPEGX Morgan Stanley Institutional Fund Trust Discovery Portfolio	-0.49%	14.05%	42.38%	46.66%	-63.39%	-12.37%	142.68%	39.73%	12.19%	39.39%

Correlation

The correlation between MSSMX and MPEGX is 0.91, 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	0.91
Correlation (3Y) Calculated over the trailing 3-year period	0.93
Correlation (5Y) Calculated over the trailing 5-year period	0.94
Correlation (10Y) Calculated over the trailing 10-year period	0.91
Correlation (All Time) Calculated using the full available price history since Dec 29, 1995	0.90

The correlation between MSSMX and MPEGX has been stable across timeframes, ranging from 0.90 to 0.94 - a consistent structural relationship.

Return for Risk

MSSMX vs. MPEGX — Risk / Return Rank

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

MSSMX

MSSMX Risk / Return Rank: 4
MSSMX Sharpe Ratio Rank: 4
MSSMX Sortino Ratio Rank: 5
MSSMX Omega Ratio Rank: 5
MSSMX Calmar Ratio Rank: 4
MSSMX Martin Ratio Rank: 4

MPEGX

MPEGX Risk / Return Rank: 3
MPEGX Sharpe Ratio Rank: 2
MPEGX Sortino Ratio Rank: 3
MPEGX Omega Ratio Rank: 3
MPEGX Calmar Ratio Rank: 2
MPEGX Martin Ratio Rank: 2

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.

MSSMX vs. MPEGX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Morgan Stanley Institutional Inception Fund Class A (MSSMX) and Morgan Stanley Institutional Fund Trust Discovery Portfolio (MPEGX). 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.

	MSSMX	MPEGX	Difference
Sharpe ratio: Return per unit of total volatility	0.20	-0.08	+0.27
Sortino ratio: Return per unit of downside risk	0.49	0.09	+0.40
Omega ratio: Gain probability vs. loss probability	1.06	1.01	+0.05
Calmar ratio: Return relative to maximum drawdown	0.18	-0.08	+0.26
Martin ratio: Return relative to average drawdown	0.38	-0.17	+0.55

MSSMX vs. MPEGX - Sharpe Ratio Comparison

The current MSSMX Sharpe Ratio is 0.20, which is higher than the MPEGX Sharpe Ratio of -0.08. The chart below compares the historical Sharpe Ratios of MSSMX and MPEGX, 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

MSSMX vs. MPEGX - Drawdown Comparison

The maximum MSSMX drawdown since its inception was -76.24%, roughly equal to the maximum MPEGX drawdown of -75.29%. Use the drawdown chart below to compare losses from any high point for MSSMX and MPEGX.

Drawdown Indicators

	MSSMX	MPEGX	Difference
Max Drawdown Largest peak-to-trough decline	-76.24%	-75.29%	-0.95%
Max Drawdown (1Y) Largest decline over 1 year	-32.92%	-27.46%	-5.46%
Max Drawdown (3Y) Largest decline over 3 years	-32.92%	-28.53%	-4.39%
Max Drawdown (5Y) Largest decline over 5 years	-73.30%	-72.99%	-0.31%
Max Drawdown (10Y) Largest decline over 10 years	-76.24%	-75.29%	-0.95%
Current Drawdown Current decline from peak	-48.03%	-38.47%	-9.56%
Average Drawdown Average peak-to-trough decline	-24.63%	-21.24%	-3.39%
Ulcer Index Depth and duration of drawdowns from previous peaks	15.77%	13.07%	+2.70%

Volatility

MSSMX vs. MPEGX - Volatility Comparison

Morgan Stanley Institutional Inception Fund Class A (MSSMX) has a higher volatility of 10.88% compared to Morgan Stanley Institutional Fund Trust Discovery Portfolio (MPEGX) at 10.25%. This indicates that MSSMX's price experiences larger fluctuations and is considered to be riskier than MPEGX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MSSMX	MPEGX	Difference
Volatility (1M) Calculated over the trailing 1-month period	10.88%	10.25%	+0.63%
Volatility (6M) Calculated over the trailing 6-month period	23.26%	21.94%	+1.32%
Volatility (1Y) Calculated over the trailing 1-year period	30.70%	28.75%	+1.95%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	37.99%	40.31%	-2.32%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	34.40%	34.61%	-0.21%

MSSMX vs. MPEGX - Expense Ratio Comparison

MSSMX has a 1.35% expense ratio, which is higher than MPEGX's 0.72% expense ratio.

Dividends

MSSMX vs. MPEGX - Dividend Comparison

Neither MSSMX nor MPEGX has paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MPEGX Morgan Stanley Institutional Fund Trust Discovery Portfolio	0.00%	0.00%	0.00%	0.00%	0.00%	35.82%	7.63%	12.05%	23.88%	41.11%	67.79%	13.20%
MSSMX Morgan Stanley Institutional Inception Fund Class A	0.00%	0.00%	1.16%	0.00%	0.14%	36.28%	13.10%	45.60%	18.04%	57.39%	3.76%	9.73%

Frequently Asked Questions

Can I hold both MSSMX and MPEGX in my portfolio?

With a correlation of 0.91, MSSMX and MPEGX 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, MSSMX or MPEGX?

MSSMX has higher volatility (10.88%) compared to MPEGX (10.25%). In terms of maximum drawdown, MSSMX dropped -76.24% vs MPEGX's -75.29%.

Which has better risk-adjusted returns?

MSSMX currently has the higher Sharpe Ratio (0.20 vs -0.08), 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.