FMDGX vs. DIM

Last updated Jun 4, 2026

FMDGX (Fidelity Mid Cap Growth Index Fund) and DIM (WisdomTree International MidCap Dividend Fund) are both funds - FMDGX is a Mid Cap Growth Equities fund managed by Fidelity, while DIM is a Foreign Large Cap Equities fund tracking the WisdomTree International MidCap Dividend Index. Over the past 5 years, FMDGX returned 7.23%/yr vs 8.04%/yr for DIM. A 0.66 correlation means they provide meaningful diversification when combined. FMDGX charges 0.05%/yr vs 0.58%/yr for DIM.

Performance

FMDGX vs. DIM - Performance Comparison

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

Returns By Period

In the year-to-date period, FMDGX achieves a 4.88% return, which is significantly lower than DIM's 6.96% return.

FMDGX

• 1D: -0.22%
• 1M: 5.21%
• YTD: 4.88%
• 6M: 3.96%
• 1Y: 6.81%
• 3Y*: 16.42%
• 5Y*: 7.23%
• 10Y*: —

DIM

• 1D: -0.77%
• 1M: 0.84%
• YTD: 6.96%
• 6M: 9.54%
• 1Y: 20.14%
• 3Y*: 17.93%
• 5Y*: 8.04%
• 10Y*: 7.90%

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

FMDGX vs. DIM - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
FMDGX Fidelity Mid Cap Growth Index Fund	4.88%	8.60%	22.03%	25.79%	-26.67%	12.67%	34.84%	4.63%
DIM WisdomTree International MidCap Dividend Fund	6.96%	37.25%	3.51%	15.00%	-14.09%	9.55%	-0.40%	8.09%

Correlation

The correlation between FMDGX and DIM is 0.55, 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	0.55
Correlation (3Y) Calculated over the trailing 3-year period	0.59
Correlation (5Y) Calculated over the trailing 5-year period	0.65
Correlation (All Time) Calculated using the full available price history since Jul 18, 2019	0.66

The correlation between FMDGX and DIM shifts across timeframes, from 0.55 (1 year) to 0.66 (all time), reflecting how their relationship changes across market environments.

Return for Risk

FMDGX vs. DIM — Risk / Return Rank

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

FMDGX

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

DIM

DIM Risk / Return Rank: 43
DIM Sharpe Ratio Rank: 44
DIM Sortino Ratio Rank: 43
DIM Omega Ratio Rank: 43
DIM Calmar Ratio Rank: 39
DIM Martin Ratio Rank: 44

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.

FMDGX vs. DIM - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Mid Cap Growth Index Fund (FMDGX) and WisdomTree International MidCap Dividend Fund (DIM). 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.

	FMDGX	DIM	Difference
Sharpe ratio: Return per unit of total volatility	0.49	1.56	-1.07
Sortino ratio: Return per unit of downside risk	0.80	2.19	-1.39
Omega ratio: Gain probability vs. loss probability	1.09	1.28	-0.19
Calmar ratio: Return relative to maximum drawdown	0.54	1.92	-1.37
Martin ratio: Return relative to average drawdown	1.58	7.26	-5.68
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FMDGX vs. DIM - Sharpe Ratio Comparison

The current FMDGX Sharpe Ratio is 0.49, which is lower than the DIM Sharpe Ratio of 1.56. The chart below compares the historical Sharpe Ratios of FMDGX and DIM, 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

	FMDGX	DIM	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.49	1.56	-1.07
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.32	0.52	-0.20
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.47	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.45	0.30	+0.15

Drawdowns

FMDGX vs. DIM - Drawdown Comparison

The maximum FMDGX drawdown since its inception was -38.59%, smaller than the maximum DIM drawdown of -61.45%. Use the drawdown chart below to compare losses from any high point for FMDGX and DIM.

Drawdown Indicators

	FMDGX	DIM	Difference
Max Drawdown Largest peak-to-trough decline	-38.59%	-61.45%	+22.86%
Max Drawdown (1Y) Largest decline over 1 year	-14.75%	-10.56%	-4.19%
Max Drawdown (3Y) Largest decline over 3 years	-25.30%	-12.13%	-13.17%
Max Drawdown (5Y) Largest decline over 5 years	-38.59%	-30.71%	-7.88%
Max Drawdown (10Y) Largest decline over 10 years	—	-40.89%	—
Current Drawdown Current decline from peak	-1.09%	-3.59%	+2.50%
Average Drawdown Average peak-to-trough decline	-11.21%	-12.63%	+1.42%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.05%	2.78%	+2.27%

Volatility

FMDGX vs. DIM - Volatility Comparison

The current volatility for Fidelity Mid Cap Growth Index Fund (FMDGX) is 3.52%, while WisdomTree International MidCap Dividend Fund (DIM) has a volatility of 4.20%. This indicates that FMDGX experiences smaller price fluctuations and is considered to be less risky than DIM based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FMDGX	DIM	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.52%	4.20%	-0.68%
Volatility (6M) Calculated over the trailing 6-month period	12.64%	10.71%	+1.93%
Volatility (1Y) Calculated over the trailing 1-year period	16.46%	13.03%	+3.43%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.37%	15.43%	+6.94%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	24.32%	16.91%	+7.41%

FMDGX vs. DIM - Expense Ratio Comparison

FMDGX has a 0.05% expense ratio, which is lower than DIM's 0.58% expense ratio.

Dividends

FMDGX vs. DIM - Dividend Comparison

FMDGX's dividend yield for the trailing twelve months is around 1.77%, less than DIM's 2.85% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
DIM WisdomTree International MidCap Dividend Fund	2.85%	3.20%	3.58%	4.62%	3.96%	3.65%	2.53%	3.26%	3.28%	2.57%	2.94%	2.81%
FMDGX Fidelity Mid Cap Growth Index Fund	1.77%	1.85%	0.47%	0.63%	0.81%	6.43%	0.36%	0.29%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both FMDGX and DIM in my portfolio?

FMDGX and DIM have a correlation of 0.55, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FMDGX or DIM?

DIM has higher volatility (4.20%) compared to FMDGX (3.52%). In terms of maximum drawdown, FMDGX dropped -38.59% vs DIM's -61.45%.

Which has better risk-adjusted returns?

DIM currently has the higher Sharpe Ratio (1.56 vs 0.49), 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.