FIDKX vs. FSGEX

Last updated Jun 4, 2026

FIDKX (Fidelity International Discovery Fund Class K) and FSGEX (Fidelity Series Global ex U.S. Index Fund) are both Foreign Large Cap Equities funds from Fidelity. Over the past 10 years, FIDKX returned 9.35%/yr vs 9.96%/yr for FSGEX. With a 0.95 correlation, they move nearly in lockstep. FIDKX charges 0.90%/yr vs 0.01%/yr for FSGEX.

Performance

FIDKX vs. FSGEX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity International Discovery Fund Class K (FIDKX) and Fidelity Series Global ex U.S. Index Fund (FSGEX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FIDKX achieves a 11.93% return, which is significantly lower than FSGEX's 15.85% return. Over the past 10 years, FIDKX has underperformed FSGEX with an annualized return of 9.35%, while FSGEX has yielded a comparatively higher 9.96% annualized return.

FIDKX

• 1D: 0.78%
• 1M: 5.27%
• YTD: 11.93%
• 6M: 14.36%
• 1Y: 23.61%
• 3Y*: 18.35%
• 5Y*: 6.62%
• 10Y*: 9.35%

FSGEX

• 1D: 0.76%
• 1M: 6.16%
• YTD: 15.85%
• 6M: 18.73%
• 1Y: 33.95%
• 3Y*: 20.16%
• 5Y*: 9.06%
• 10Y*: 9.96%

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

FIDKX vs. FSGEX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FIDKX Fidelity International Discovery Fund Class K	11.93%	27.70%	11.03%	14.30%	-24.73%	11.18%	21.55%	27.66%	-17.06%	30.27%
FSGEX Fidelity Series Global ex U.S. Index Fund	15.85%	32.99%	5.34%	15.56%	-15.75%	7.77%	10.75%	21.41%	-13.99%	27.47%

Correlation

The correlation between FIDKX and FSGEX is 0.94, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.94
Correlation (3Y) Calculated over the trailing 3-year period	0.92
Correlation (5Y) Calculated over the trailing 5-year period	0.94
Correlation (10Y) Calculated over the trailing 10-year period	0.94
Correlation (All Time) Calculated using the full available price history since Oct 2, 2009	0.95

The correlation between FIDKX and FSGEX has been stable across timeframes, ranging from 0.92 to 0.95 - a consistent structural relationship.

Return for Risk

FIDKX vs. FSGEX — Risk / Return Rank

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

FIDKX

FIDKX Risk / Return Rank: 23
FIDKX Sharpe Ratio Rank: 22
FIDKX Sortino Ratio Rank: 21
FIDKX Omega Ratio Rank: 21
FIDKX Calmar Ratio Rank: 23
FIDKX Martin Ratio Rank: 29

FSGEX

FSGEX Risk / Return Rank: 59
FSGEX Sharpe Ratio Rank: 62
FSGEX Sortino Ratio Rank: 55
FSGEX Omega Ratio Rank: 59
FSGEX Calmar Ratio Rank: 60
FSGEX Martin Ratio Rank: 58

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.

FIDKX vs. FSGEX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity International Discovery Fund Class K (FIDKX) and Fidelity Series Global ex U.S. Index Fund (FSGEX). 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.

	FIDKX	FSGEX	Difference
Sharpe ratio: Return per unit of total volatility	1.34	2.31	-0.97
Sortino ratio: Return per unit of downside risk	1.92	3.13	-1.21
Omega ratio: Gain probability vs. loss probability	1.24	1.43	-0.19
Calmar ratio: Return relative to maximum drawdown	1.77	2.98	-1.21
Martin ratio: Return relative to average drawdown	6.76	11.69	-4.93
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FIDKX vs. FSGEX - Sharpe Ratio Comparison

The current FIDKX Sharpe Ratio is 1.34, which is lower than the FSGEX Sharpe Ratio of 2.31. The chart below compares the historical Sharpe Ratios of FIDKX and FSGEX, 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

	FIDKX	FSGEX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.34	2.31	-0.97
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.39	0.59	-0.20
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.55	0.62	-0.06
Sharpe Ratio (All Time) Calculated using the full available price history	0.27	0.42	-0.15

Drawdowns

FIDKX vs. FSGEX - Drawdown Comparison

The maximum FIDKX drawdown since its inception was -56.79%, which is greater than FSGEX's maximum drawdown of -34.74%. Use the drawdown chart below to compare losses from any high point for FIDKX and FSGEX.

Drawdown Indicators

	FIDKX	FSGEX	Difference
Max Drawdown Largest peak-to-trough decline	-56.79%	-34.74%	-22.05%
Max Drawdown (1Y) Largest decline over 1 year	-13.08%	-11.24%	-1.84%
Max Drawdown (3Y) Largest decline over 3 years	-14.65%	-13.34%	-1.31%
Max Drawdown (5Y) Largest decline over 5 years	-36.47%	-29.66%	-6.81%
Max Drawdown (10Y) Largest decline over 10 years	-36.47%	-34.74%	-1.73%
Current Drawdown Current decline from peak	-0.16%	0.00%	-0.16%
Average Drawdown Average peak-to-trough decline	-13.46%	-8.45%	-5.01%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.41%	2.86%	+0.55%

Volatility

FIDKX vs. FSGEX - Volatility Comparison

Fidelity International Discovery Fund Class K (FIDKX) has a higher volatility of 5.88% compared to Fidelity Series Global ex U.S. Index Fund (FSGEX) at 4.95%. This indicates that FIDKX's price experiences larger fluctuations and is considered to be riskier than FSGEX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FIDKX	FSGEX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.88%	4.95%	+0.93%
Volatility (6M) Calculated over the trailing 6-month period	14.48%	12.28%	+2.20%
Volatility (1Y) Calculated over the trailing 1-year period	17.37%	14.56%	+2.81%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.04%	15.40%	+1.64%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.01%	16.22%	+0.79%

FIDKX vs. FSGEX - Expense Ratio Comparison

FIDKX has a 0.90% expense ratio, which is higher than FSGEX's 0.01% expense ratio.

Dividends

FIDKX vs. FSGEX - Dividend Comparison

FIDKX's dividend yield for the trailing twelve months is around 6.25%, more than FSGEX's 2.61% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FIDKX Fidelity International Discovery Fund Class K	6.25%	7.00%	3.01%	2.02%	0.47%	11.39%	3.78%	2.43%	4.00%	4.02%	1.96%	0.01%
FSGEX Fidelity Series Global ex U.S. Index Fund	2.61%	3.02%	2.98%	2.90%	2.78%	2.59%	1.68%	2.10%	2.86%	2.48%	2.56%	2.61%

Frequently Asked Questions

Can I hold both FIDKX and FSGEX in my portfolio?

With a correlation of 0.94, FIDKX and FSGEX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, FIDKX or FSGEX?

FIDKX has higher volatility (5.88%) compared to FSGEX (4.95%). In terms of maximum drawdown, FIDKX dropped -56.79% vs FSGEX's -34.74%.

Which has better risk-adjusted returns?

FSGEX currently has the higher Sharpe Ratio (2.31 vs 1.34), 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.