PMAQX vs. FMDGX

Last updated Jun 25, 2026

PMAQX (Principal MidCap R6) and FMDGX (Fidelity Mid Cap Growth Index Fund) are both Mid Cap Growth Equities funds. Over the past 5 years, PMAQX returned 4.62%/yr vs 5.18%/yr for FMDGX. Their correlation of 0.86 suggests significant overlap in exposure. PMAQX charges 0.60%/yr vs 0.05%/yr for FMDGX.

Performance

PMAQX vs. FMDGX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Principal MidCap R6 (PMAQX) and Fidelity Mid Cap Growth Index Fund (FMDGX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, PMAQX achieves a -7.06% return, which is significantly lower than FMDGX's 2.45% return.

PMAQX

• 1D: -0.20%
• 1M: 2.49%
• YTD: -7.06%
• 6M: -8.57%
• 1Y: -9.78%
• 3Y*: 9.67%
• 5Y*: 4.62%
• 10Y*: —

FMDGX

• 1D: -1.32%
• 1M: 0.48%
• YTD: 2.45%
• 6M: 0.25%
• 1Y: 1.96%
• 3Y*: 15.18%
• 5Y*: 5.18%
• 10Y*: —

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

PMAQX vs. FMDGX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
PMAQX Principal MidCap R6	-7.06%	1.71%	23.74%	26.02%	-23.09%	25.29%	18.38%	12.02%
FMDGX Fidelity Mid Cap Growth Index Fund	2.45%	8.60%	22.03%	25.79%	-26.67%	12.67%	34.84%	4.63%

Correlation

The correlation between PMAQX and FMDGX is 0.75, 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	0.75
Correlation (3Y) Calculated over the trailing 3-year period	0.80
Correlation (5Y) Calculated over the trailing 5-year period	0.87
Correlation (All Time) Calculated using the full available price history since Jul 17, 2019	0.86

The correlation between PMAQX and FMDGX shifts across timeframes, from 0.75 (1 year) to 0.87 (5 years), reflecting how their relationship changes across market environments.

Return for Risk

PMAQX vs. FMDGX — Risk / Return Rank

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

PMAQX

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

FMDGX

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

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.

PMAQX vs. FMDGX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Principal MidCap R6 (PMAQX) and Fidelity Mid Cap Growth Index Fund (FMDGX). 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.

	PMAQX	FMDGX	Difference
Sharpe ratio: Return per unit of total volatility	-0.62	0.23	-0.85
Sortino ratio: Return per unit of downside risk	-0.80	0.44	-1.24
Omega ratio: Gain probability vs. loss probability	0.91	1.05	-0.14
Calmar ratio: Return relative to maximum drawdown	-0.47	0.26	-0.73
Martin ratio: Return relative to average drawdown	-0.98	0.76	-1.74

PMAQX vs. FMDGX - Sharpe Ratio Comparison

The current PMAQX Sharpe Ratio is -0.62, which is lower than the FMDGX Sharpe Ratio of 0.23. The chart below compares the historical Sharpe Ratios of PMAQX and FMDGX, 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

PMAQX vs. FMDGX - Drawdown Comparison

The maximum PMAQX drawdown since its inception was -40.56%, which is greater than FMDGX's maximum drawdown of -38.59%. Use the drawdown chart below to compare losses from any high point for PMAQX and FMDGX.

Drawdown Indicators

	PMAQX	FMDGX	Difference
Max Drawdown Largest peak-to-trough decline	-40.56%	-38.59%	-1.97%
Max Drawdown (1Y) Largest decline over 1 year	-19.25%	-14.75%	-4.50%
Max Drawdown (3Y) Largest decline over 3 years	-19.25%	-25.30%	+6.05%
Max Drawdown (5Y) Largest decline over 5 years	-31.10%	-38.59%	+7.49%
Current Drawdown Current decline from peak	-13.11%	-3.37%	-9.74%
Average Drawdown Average peak-to-trough decline	-6.85%	-11.13%	+4.28%
Ulcer Index Depth and duration of drawdowns from previous peaks	9.17%	5.10%	+4.07%

Volatility

PMAQX vs. FMDGX - Volatility Comparison

The current volatility for Principal MidCap R6 (PMAQX) is 4.42%, while Fidelity Mid Cap Growth Index Fund (FMDGX) has a volatility of 5.88%. This indicates that PMAQX experiences smaller price fluctuations and is considered to be less risky than FMDGX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PMAQX	FMDGX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.42%	5.88%	-1.46%
Volatility (6M) Calculated over the trailing 6-month period	11.67%	13.43%	-1.76%
Volatility (1Y) Calculated over the trailing 1-year period	14.65%	17.09%	-2.44%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.69%	22.46%	-3.77%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.46%	24.30%	-4.84%

PMAQX vs. FMDGX - Expense Ratio Comparison

PMAQX has a 0.60% expense ratio, which is higher than FMDGX's 0.05% expense ratio.

Dividends

PMAQX vs. FMDGX - Dividend Comparison

PMAQX's dividend yield for the trailing twelve months is around 6.24%, more than FMDGX's 1.81% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
FMDGX Fidelity Mid Cap Growth Index Fund	1.81%	1.85%	0.47%	0.63%	0.81%	6.43%	0.36%	0.29%	0.00%	0.00%
PMAQX Principal MidCap R6	6.24%	5.80%	6.46%	2.58%	3.18%	7.96%	1.08%	9.14%	12.39%	3.39%

Frequently Asked Questions

Can I hold both PMAQX and FMDGX in my portfolio?

PMAQX and FMDGX have a correlation of 0.75, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, PMAQX or FMDGX?

FMDGX has higher volatility (5.88%) compared to PMAQX (4.42%). In terms of maximum drawdown, PMAQX dropped -40.56% vs FMDGX's -38.59%.

Which has better risk-adjusted returns?

FMDGX currently has the higher Sharpe Ratio (0.23 vs -0.62), 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.