MDIDX vs. FAOSX
MDIDX (MFS International Diversification Fund Class A) and FAOSX (Fidelity Advisor Overseas Fund Class Z) are both Foreign Large Cap Equities funds. Over the past 5 years, MDIDX returned 7.43%/yr vs 2.86%/yr for FAOSX. Their correlation of 0.90 means they have usually moved in the same direction. MDIDX charges 1.08%/yr vs 1.02%/yr for FAOSX.
Performance
MDIDX vs. FAOSX - Performance Comparison
Loading charts...
Returns By Period
MDIDX
- 1D
- 2.59%
- 1M
- 1.91%
- 6M
- 5.80%
- YTD
- 11.20%
- 1Y
- 22.67%
- 3Y*
- 14.88%
- 5Y*
- 7.43%
- 10Y*
- 9.47%
- ALL TIME*
- 8.00%
FAOSX
- 1D
- 0.00%
- 1M
- 0.00%
- 6M
- 0.00%
- YTD
- 0.00%
- 1Y
- -0.26%
- 3Y*
- 7.96%
- 5Y*
- 2.86%
- 10Y*
- —
- ALL TIME*
- 8.10%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $0.00 | $0.00 | $0.00 | |
| $0.00 | $0.00 | $0.00 |
MDIDX vs. FAOSX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
MDIDX MFS International Diversification Fund Class A | 11.20% | 27.58% | 6.12% | 14.05% | -17.31% | 7.42% | 14.99% | 25.68% | -11.25% | 25.85% |
FAOSX Fidelity Advisor Overseas Fund Class Z | 0.00% | 15.36% | 5.06% | 20.52% | -24.31% | 19.42% | 15.17% | 27.96% | -14.73% | 26.25% |
Correlation
The correlation between MDIDX and FAOSX is 0.44, which is low. Their historical price movements had little consistent relationship.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.44 |
Correlation (3Y) Balances recent behavior with more history. | 0.77 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.85 |
Correlation (All Time) Calculated using the full available price history since Feb 1, 2017 | 0.90 |
Over the past year, the correlation between MDIDX and FAOSX has dropped to 0.44 - well below their long-term average of 0.90, suggesting their price drivers have been diverging.
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
Return for Risk
MDIDX vs. FAOSX — Risk / Return Rank
MDIDX
FAOSX
MDIDX vs. FAOSX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for MFS International Diversification Fund Class A (MDIDX) and Fidelity Advisor Overseas Fund Class Z (FAOSX). 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.
| MDIDX | FAOSX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +1.84 | ||
| Sortino ratioReturn per unit of downside risk | +2.53 | ||
| Omega ratioGain probability vs. loss probability | 1.28 | 0.93 | +0.35 |
| Calmar ratioReturn relative to maximum drawdown | 1.82 | -0.32 | +2.14 |
| Martin ratioReturn relative to average drawdown | 6.81 | -0.48 | +7.30 |
Loading charts...
Drawdowns
MDIDX vs. FAOSX - Drawdown Comparison
The maximum MDIDX drawdown since its inception was -56.80%, which is greater than FAOSX's maximum drawdown of -36.24%. Use the drawdown chart below to compare losses from any high point for MDIDX and FAOSX.
Loading charts...
Drawdown Indicators
| MDIDX | FAOSX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -56.80% | -36.24% | -20.56% |
Max Drawdown (1Y)Largest decline over 1 year | -11.41% | -7.26% | -4.15% |
Max Drawdown (3Y)Largest decline over 3 years | -12.60% | -13.96% | +1.36% |
Max Drawdown (5Y)Largest decline over 5 years | -30.40% | -36.24% | +5.84% |
Max Drawdown (10Y)Largest decline over 10 years | -30.40% | — | — |
Current DrawdownCurrent decline from peak | 0.00% | -5.86% | +5.86% |
Average DrawdownAverage peak-to-trough decline | -9.29% | -7.90% | -1.39% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.05% | 4.48% | -1.43% |
Volatility
MDIDX vs. FAOSX - Volatility Comparison
MFS International Diversification Fund Class A (MDIDX) has a higher volatility of 4.14% compared to Fidelity Advisor Overseas Fund Class Z (FAOSX) at 0.00%. This indicates that MDIDX's price experiences larger fluctuations and is considered to be riskier than FAOSX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
Loading charts...
Volatility by Period
| MDIDX | FAOSX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 4.14% | 0.00% | +4.14% |
Volatility (6M)Calculated over the trailing 6-month period | 11.68% | 0.00% | +11.68% |
Volatility (1Y)Calculated over the trailing 1-year period | 13.58% | 7.68% | +5.90% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 14.43% | 16.65% | -2.22% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 14.55% | 16.56% | -2.01% |
MDIDX vs. FAOSX - Expense Ratio Comparison
MDIDX has a 1.08% expense ratio, which is higher than FAOSX's 1.02% expense ratio.
Dividends
MDIDX vs. FAOSX - Dividend Comparison
MDIDX's dividend yield for the trailing twelve months is around 4.48%, less than FAOSX's 8.67% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
FAOSX Fidelity Advisor Overseas Fund Class Z | 8.67% | 8.67% | 1.80% | 1.12% | 0.85% | 2.07% | 0.00% | 1.70% | 5.30% | 3.93% | 0.00% | 0.00% |
MDIDX MFS International Diversification Fund Class A | 4.48% | 4.99% | 3.27% | 3.94% | 2.41% | 2.47% | 1.45% | 2.30% | 2.89% | 1.42% | 1.94% | 1.60% |
Frequently Asked Questions
MDIDX and FAOSX have a correlation of 0.44, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
MDIDX has higher volatility (4.14%) compared to FAOSX (0.00%). In terms of maximum drawdown, MDIDX dropped -56.80% vs FAOSX's -36.24%.
MDIDX currently has the higher Sharpe Ratio (1.53 vs -0.30), 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.
Find the right allocation for MDIDX and FAOSX
Add both to a portfolio and optimize allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.
Open Portfolio Optimizer