FIDFX vs. FMDGX

Last updated Jun 24, 2026

FIDFX (Fidelity Advisor Mid Cap Value Fund Class Z) and FMDGX (Fidelity Mid Cap Growth Index Fund) are both mutual funds - FIDFX is a Mid Cap Value Equities fund managed by Fidelity, while FMDGX is a Mid Cap Growth Equities fund tracking the Russell Midcap Growth Index. Over the past 5 years, FIDFX returned 14.15%/yr vs 5.63%/yr for FMDGX. A 0.74 correlation means they provide meaningful diversification when combined. FIDFX charges 0.45%/yr vs 0.05%/yr for FMDGX.

Performance

FIDFX vs. FMDGX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity Advisor Mid Cap Value Fund Class Z (FIDFX) 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, FIDFX achieves a 23.12% return, which is significantly higher than FMDGX's 3.82% return.

FIDFX

• 1D: 0.41%
• 1M: 5.80%
• YTD: 23.12%
• 6M: 21.86%
• 1Y: 40.26%
• 3Y*: 23.47%
• 5Y*: 14.15%
• 10Y*: —

FMDGX

• 1D: -0.11%
• 1M: 1.82%
• YTD: 3.82%
• 6M: 1.82%
• 1Y: 5.26%
• 3Y*: 15.69%
• 5Y*: 5.63%
• 10Y*: —

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

FIDFX vs. FMDGX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
FIDFX Fidelity Advisor Mid Cap Value Fund Class Z	23.12%	13.16%	14.66%	22.69%	-10.52%	34.11%	1.15%	7.75%
FMDGX Fidelity Mid Cap Growth Index Fund	3.82%	8.60%	22.03%	25.79%	-26.67%	12.67%	34.84%	4.63%

Correlation

The correlation between FIDFX and FMDGX is 0.74, 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	0.74
Correlation (3Y) Calculated over the trailing 3-year period	0.78
Correlation (5Y) Calculated over the trailing 5-year period	0.81
Correlation (All Time) Calculated using the full available price history since Jul 17, 2019	0.74

The correlation between FIDFX and FMDGX has been stable across timeframes, ranging from 0.74 to 0.81 - a consistent structural relationship.

Return for Risk

FIDFX vs. FMDGX — Risk / Return Rank

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

FIDFX

FIDFX Risk / Return Rank: 81
FIDFX Sharpe Ratio Rank: 82
FIDFX Sortino Ratio Rank: 80
FIDFX Omega Ratio Rank: 71
FIDFX Calmar Ratio Rank: 87
FIDFX Martin Ratio Rank: 87

FMDGX

FMDGX Risk / Return Rank: 5
FMDGX Sharpe Ratio Rank: 5
FMDGX Sortino Ratio Rank: 5
FMDGX Omega Ratio Rank: 5
FMDGX Calmar Ratio Rank: 5
FMDGX Martin Ratio Rank: 6

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.

FIDFX vs. FMDGX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Advisor Mid Cap Value Fund Class Z (FIDFX) 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.

	FIDFX	FMDGX	Difference
Sharpe ratio: Return per unit of total volatility	2.49	0.36	+2.13
Sortino ratio: Return per unit of downside risk	3.51	0.62	+2.88
Omega ratio: Gain probability vs. loss probability	1.43	1.07	+0.36
Calmar ratio: Return relative to maximum drawdown	4.02	0.42	+3.61
Martin ratio: Return relative to average drawdown	15.46	1.20	+14.26

FIDFX vs. FMDGX - Sharpe Ratio Comparison

The current FIDFX Sharpe Ratio is 2.49, which is higher than the FMDGX Sharpe Ratio of 0.36. The chart below compares the historical Sharpe Ratios of FIDFX 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

FIDFX vs. FMDGX - Drawdown Comparison

The maximum FIDFX drawdown since its inception was -44.98%, which is greater than FMDGX's maximum drawdown of -38.59%. Use the drawdown chart below to compare losses from any high point for FIDFX and FMDGX.

Drawdown Indicators

	FIDFX	FMDGX	Difference
Max Drawdown Largest peak-to-trough decline	-44.98%	-38.59%	-6.39%
Max Drawdown (1Y) Largest decline over 1 year	-10.31%	-14.75%	+4.44%
Max Drawdown (3Y) Largest decline over 3 years	-23.70%	-25.30%	+1.60%
Max Drawdown (5Y) Largest decline over 5 years	-23.70%	-38.59%	+14.89%
Current Drawdown Current decline from peak	0.00%	-2.08%	+2.08%
Average Drawdown Average peak-to-trough decline	-6.85%	-11.14%	+4.29%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.68%	5.09%	-2.41%

Volatility

FIDFX vs. FMDGX - Volatility Comparison

The current volatility for Fidelity Advisor Mid Cap Value Fund Class Z (FIDFX) is 5.20%, while Fidelity Mid Cap Growth Index Fund (FMDGX) has a volatility of 5.70%. This indicates that FIDFX 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

	FIDFX	FMDGX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.20%	5.70%	-0.50%
Volatility (6M) Calculated over the trailing 6-month period	12.53%	13.38%	-0.85%
Volatility (1Y) Calculated over the trailing 1-year period	16.72%	17.07%	-0.35%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	20.25%	22.45%	-2.20%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.63%	24.30%	-2.67%

FIDFX vs. FMDGX - Expense Ratio Comparison

FIDFX has a 0.45% expense ratio, which is higher than FMDGX's 0.05% expense ratio.

Dividends

FIDFX vs. FMDGX - Dividend Comparison

FIDFX's dividend yield for the trailing twelve months is around 6.42%, more than FMDGX's 1.79% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
FIDFX Fidelity Advisor Mid Cap Value Fund Class Z	6.42%	8.32%	10.60%	1.30%	13.40%	1.43%	2.11%	2.03%	15.16%	9.15%
FMDGX Fidelity Mid Cap Growth Index Fund	1.79%	1.85%	0.47%	0.63%	0.81%	6.43%	0.36%	0.29%	0.00%	0.00%

Frequently Asked Questions

Can I hold both FIDFX and FMDGX in my portfolio?

FIDFX and FMDGX have a correlation of 0.74, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FIDFX or FMDGX?

FMDGX has higher volatility (5.70%) compared to FIDFX (5.20%). In terms of maximum drawdown, FIDFX dropped -44.98% vs FMDGX's -38.59%.

Which has better risk-adjusted returns?

FIDFX currently has the higher Sharpe Ratio (2.49 vs 0.36), 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.