FBKWX vs. FSPSX

Last updated Jun 24, 2026

FBKWX (Fidelity Advisor Total Bond Fund Class Z) and FSPSX (Fidelity International Index Fund) are both mutual funds - FBKWX is a Total Bond Market fund managed by Fidelity, while FSPSX is a Foreign Large Cap Equities fund tracking the MSCI EAFE Index. Over the past 10 years, FBKWX returned 2.42%/yr vs 10.29%/yr for FSPSX. At a 0.11 correlation, their price movements are largely independent. FBKWX charges 0.36%/yr vs 0.04%/yr for FSPSX.

Performance

FBKWX vs. FSPSX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity Advisor Total Bond Fund Class Z (FBKWX) and Fidelity International Index Fund (FSPSX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FBKWX achieves a 0.29% return, which is significantly lower than FSPSX's 10.74% return. Over the past 10 years, FBKWX has underperformed FSPSX with an annualized return of 2.42%, while FSPSX has yielded a comparatively higher 10.29% annualized return.

FBKWX

• 1D: -0.31%
• 1M: 0.68%
• YTD: 0.29%
• 6M: 0.65%
• 1Y: 4.73%
• 3Y*: 4.60%
• 5Y*: 0.49%
• 10Y*: 2.42%

FSPSX

• 1D: 0.18%
• 1M: 2.11%
• YTD: 10.74%
• 6M: 10.40%
• 1Y: 24.77%
• 3Y*: 17.73%
• 5Y*: 9.39%
• 10Y*: 10.29%

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

FBKWX vs. FSPSX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FBKWX Fidelity Advisor Total Bond Fund Class Z	0.29%	7.60%	2.20%	6.56%	-13.55%	-0.27%	9.46%	9.88%	-0.56%	4.39%
FSPSX Fidelity International Index Fund	10.74%	31.98%	3.70%	18.31%	-14.23%	11.45%	8.16%	22.03%	-13.55%	25.37%

Correlation

The correlation between FBKWX and FSPSX is 0.42, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.42
Correlation (3Y) Calculated over the trailing 3-year period	0.32
Correlation (5Y) Calculated over the trailing 5-year period	0.26
Correlation (10Y) Calculated over the trailing 10-year period	0.13
Correlation (All Time) Calculated using the full available price history since Jan 2, 2015	0.11

Over the past year, FBKWX and FSPSX have become more correlated (0.42) than their long-term average of 0.11, meaning their price movements have been converging.

Return for Risk

FBKWX vs. FSPSX — Risk / Return Rank

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

FBKWX

FBKWX Risk / Return Rank: 22
FBKWX Sharpe Ratio Rank: 22
FBKWX Sortino Ratio Rank: 23
FBKWX Omega Ratio Rank: 19
FBKWX Calmar Ratio Rank: 24
FBKWX Martin Ratio Rank: 20

FSPSX

FSPSX Risk / Return Rank: 39
FSPSX Sharpe Ratio Rank: 40
FSPSX Sortino Ratio Rank: 38
FSPSX Omega Ratio Rank: 38
FSPSX Calmar Ratio Rank: 39
FSPSX Martin Ratio Rank: 42

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.

FBKWX vs. FSPSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Advisor Total Bond Fund Class Z (FBKWX) and Fidelity International Index Fund (FSPSX). 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.

	FBKWX	FSPSX	Difference
Sharpe ratio: Return per unit of total volatility	1.24	1.69	-0.46
Sortino ratio: Return per unit of downside risk	1.88	2.39	-0.52
Omega ratio: Gain probability vs. loss probability	1.21	1.31	-0.09
Calmar ratio: Return relative to maximum drawdown	1.69	2.26	-0.58
Martin ratio: Return relative to average drawdown	4.76	8.48	-3.72

FBKWX vs. FSPSX - Sharpe Ratio Comparison

The current FBKWX Sharpe Ratio is 1.24, which is comparable to the FSPSX Sharpe Ratio of 1.69. The chart below compares the historical Sharpe Ratios of FBKWX and FSPSX, 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

FBKWX vs. FSPSX - Drawdown Comparison

The maximum FBKWX drawdown since its inception was -18.31%, smaller than the maximum FSPSX drawdown of -33.69%. Use the drawdown chart below to compare losses from any high point for FBKWX and FSPSX.

Drawdown Indicators

	FBKWX	FSPSX	Difference
Max Drawdown Largest peak-to-trough decline	-18.31%	-33.69%	+15.38%
Max Drawdown (1Y) Largest decline over 1 year	-2.88%	-11.39%	+8.51%
Max Drawdown (3Y) Largest decline over 3 years	-5.82%	-13.58%	+7.76%
Max Drawdown (5Y) Largest decline over 5 years	-18.31%	-29.41%	+11.10%
Max Drawdown (10Y) Largest decline over 10 years	-18.31%	-33.69%	+15.38%
Current Drawdown Current decline from peak	-1.60%	0.00%	-1.60%
Average Drawdown Average peak-to-trough decline	-3.65%	-6.53%	+2.88%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.02%	3.04%	-2.02%

Volatility

FBKWX vs. FSPSX - Volatility Comparison

The current volatility for Fidelity Advisor Total Bond Fund Class Z (FBKWX) is 1.12%, while Fidelity International Index Fund (FSPSX) has a volatility of 4.77%. This indicates that FBKWX experiences smaller price fluctuations and is considered to be less risky than FSPSX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FBKWX	FSPSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.12%	4.77%	-3.65%
Volatility (6M) Calculated over the trailing 6-month period	2.85%	12.68%	-9.83%
Volatility (1Y) Calculated over the trailing 1-year period	3.94%	15.26%	-11.32%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.71%	16.07%	-10.36%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.76%	16.53%	-11.77%

FBKWX vs. FSPSX - Expense Ratio Comparison

FBKWX has a 0.36% expense ratio, which is higher than FSPSX's 0.04% expense ratio.

Dividends

FBKWX vs. FSPSX - Dividend Comparison

FBKWX's dividend yield for the trailing twelve months is around 4.46%, more than FSPSX's 2.85% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FBKWX Fidelity Advisor Total Bond Fund Class Z	4.46%	4.45%	4.22%	3.52%	2.59%	1.97%	5.32%	3.11%	3.30%	3.07%	3.71%	3.38%
FSPSX Fidelity International Index Fund	2.85%	3.15%	3.27%	2.79%	2.66%	3.07%	1.84%	3.18%	2.79%	2.50%	3.08%	2.79%

Frequently Asked Questions

Can I hold both FBKWX and FSPSX in my portfolio?

FBKWX and FSPSX have a correlation of 0.42, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FBKWX or FSPSX?

FSPSX has higher volatility (4.77%) compared to FBKWX (1.12%). In terms of maximum drawdown, FBKWX dropped -18.31% vs FSPSX's -33.69%.

Which has better risk-adjusted returns?

FSPSX currently has the higher Sharpe Ratio (1.69 vs 1.24), 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.