PCBIX vs. MMGPX

Last updated Jun 4, 2026

PCBIX (Principal MidCap Fund Institutional Class) and MMGPX (Morgan Stanley Discovery Portfolio) are both Mid Cap Growth Equities funds. Over the past 5 years, PCBIX returned 5.18%/yr vs -3.53%/yr for MMGPX. A 0.65 correlation means they provide meaningful diversification when combined. PCBIX charges 0.67%/yr vs 0.04%/yr for MMGPX.

Performance

PCBIX vs. MMGPX - Performance Comparison

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

Returns By Period

In the year-to-date period, PCBIX achieves a -7.38% return, which is significantly lower than MMGPX's 6.58% return.

PCBIX

• 1D: -0.58%
• 1M: 1.88%
• YTD: -7.38%
• 6M: -7.97%
• 1Y: -8.67%
• 3Y*: 10.22%
• 5Y*: 5.18%
• 10Y*: 11.85%

MMGPX

• 1D: -1.64%
• 1M: 5.85%
• YTD: 6.58%
• 6M: 2.50%
• 1Y: 4.84%
• 3Y*: 26.16%
• 5Y*: -3.53%
• 10Y*: —

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

PCBIX vs. MMGPX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
PCBIX Principal MidCap Fund Institutional Class	-7.38%	1.62%	23.63%	25.92%	-23.16%	25.22%	18.25%	49.40%	-6.86%	21.75%
MMGPX Morgan Stanley Discovery Portfolio	6.58%	12.58%	41.83%	44.34%	-63.37%	-11.55%	152.67%	40.20%	10.89%	28.18%

Correlation

The correlation between PCBIX and MMGPX is 0.54, 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	0.54
Correlation (3Y) Calculated over the trailing 3-year period	0.62
Correlation (5Y) Calculated over the trailing 5-year period	0.68
Correlation (All Time) Calculated using the full available price history since Feb 2, 2017	0.65

The correlation between PCBIX and MMGPX shifts across timeframes, from 0.54 (1 year) to 0.68 (5 years), reflecting how their relationship changes across market environments.

Return for Risk

PCBIX vs. MMGPX — Risk / Return Rank

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

PCBIX

PCBIX Risk / Return Rank: 1
PCBIX Sharpe Ratio Rank: 1
PCBIX Sortino Ratio Rank: 1
PCBIX Omega Ratio Rank: 1
PCBIX Calmar Ratio Rank: 1
PCBIX Martin Ratio Rank: 1

MMGPX

MMGPX Risk / Return Rank: 4
MMGPX Sharpe Ratio Rank: 4
MMGPX Sortino Ratio Rank: 4
MMGPX Omega Ratio Rank: 4
MMGPX Calmar Ratio Rank: 4
MMGPX Martin Ratio Rank: 3

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.

PCBIX vs. MMGPX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Principal MidCap Fund Institutional Class (PCBIX) and Morgan Stanley Discovery Portfolio (MMGPX). 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.

	PCBIX	MMGPX	Difference
Sharpe ratio: Return per unit of total volatility	-0.59	0.22	-0.81
Sortino ratio: Return per unit of downside risk	-0.75	0.50	-1.25
Omega ratio: Gain probability vs. loss probability	0.92	1.06	-0.14
Calmar ratio: Return relative to maximum drawdown	-0.43	0.22	-0.65
Martin ratio: Return relative to average drawdown	-0.96	0.47	-1.43
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

PCBIX vs. MMGPX - Sharpe Ratio Comparison

The current PCBIX Sharpe Ratio is -0.59, which is lower than the MMGPX Sharpe Ratio of 0.22. The chart below compares the historical Sharpe Ratios of PCBIX and MMGPX, 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

	PCBIX	MMGPX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.59	0.22	-0.81
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.28	-0.09	+0.37
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.62	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.60	0.46	+0.14

Drawdowns

PCBIX vs. MMGPX - Drawdown Comparison

The maximum PCBIX drawdown since its inception was -50.25%, smaller than the maximum MMGPX drawdown of -75.38%. Use the drawdown chart below to compare losses from any high point for PCBIX and MMGPX.

Drawdown Indicators

	PCBIX	MMGPX	Difference
Max Drawdown Largest peak-to-trough decline	-50.25%	-75.38%	+25.13%
Max Drawdown (1Y) Largest decline over 1 year	-19.29%	-27.79%	+8.50%
Max Drawdown (3Y) Largest decline over 3 years	-19.29%	-29.27%	+9.98%
Max Drawdown (5Y) Largest decline over 5 years	-31.17%	-72.70%	+41.53%
Max Drawdown (10Y) Largest decline over 10 years	-40.56%	—	—
Current Drawdown Current decline from peak	-13.43%	-36.32%	+22.89%
Average Drawdown Average peak-to-trough decline	-6.55%	-30.24%	+23.69%
Ulcer Index Depth and duration of drawdowns from previous peaks	8.66%	13.11%	-4.45%

Volatility

PCBIX vs. MMGPX - Volatility Comparison

The current volatility for Principal MidCap Fund Institutional Class (PCBIX) is 4.07%, while Morgan Stanley Discovery Portfolio (MMGPX) has a volatility of 8.88%. This indicates that PCBIX experiences smaller price fluctuations and is considered to be less risky than MMGPX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PCBIX	MMGPX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.07%	8.88%	-4.81%
Volatility (6M) Calculated over the trailing 6-month period	11.13%	20.96%	-9.83%
Volatility (1Y) Calculated over the trailing 1-year period	14.21%	27.57%	-13.36%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.63%	39.71%	-21.08%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.15%	35.22%	-16.07%

PCBIX vs. MMGPX - Expense Ratio Comparison

PCBIX has a 0.67% expense ratio, which is higher than MMGPX's 0.04% expense ratio.

Dividends

PCBIX vs. MMGPX - Dividend Comparison

PCBIX's dividend yield for the trailing twelve months is around 6.28%, more than MMGPX's 0.40% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MMGPX Morgan Stanley Discovery Portfolio	0.40%	0.43%	0.00%	0.00%	125.40%	64.53%	7.93%	15.63%	28.02%	0.00%	0.00%	0.00%
PCBIX Principal MidCap Fund Institutional Class	6.28%	5.81%	6.40%	2.51%	3.18%	7.96%	1.08%	9.02%	12.24%	3.31%	2.49%	6.30%

Frequently Asked Questions

Can I hold both PCBIX and MMGPX in my portfolio?

PCBIX and MMGPX have a correlation of 0.54, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, PCBIX or MMGPX?

MMGPX has higher volatility (8.88%) compared to PCBIX (4.07%). In terms of maximum drawdown, PCBIX dropped -50.25% vs MMGPX's -75.38%.

Which has better risk-adjusted returns?

MMGPX currently has the higher Sharpe Ratio (0.22 vs -0.59), 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.