FBKWX vs. PBDIX

Last updated Jun 4, 2026

FBKWX (Fidelity Advisor Total Bond Fund Class Z) and PBDIX (T. Rowe Price QM U.S. Bond Index Fund) are both Total Bond Market funds. Over the past 10 years, FBKWX returned 2.49%/yr vs 1.88%/yr for PBDIX. Their correlation of 0.93 suggests significant overlap in exposure. FBKWX charges 0.36%/yr vs 0.23%/yr for PBDIX.

Performance

FBKWX vs. PBDIX - Performance Comparison

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

Returns By Period

In the year-to-date period, FBKWX achieves a 0.61% return, which is significantly higher than PBDIX's 0.20% return. Over the past 10 years, FBKWX has outperformed PBDIX with an annualized return of 2.49%, while PBDIX has yielded a comparatively lower 1.88% annualized return.

FBKWX

• 1D: 0.10%
• 1M: 0.47%
• YTD: 0.61%
• 6M: 0.45%
• 1Y: 5.84%
• 3Y*: 4.78%
• 5Y*: 0.69%
• 10Y*: 2.49%

PBDIX

• 1D: 0.00%
• 1M: 0.47%
• YTD: 0.20%
• 6M: 0.62%
• 1Y: 6.80%
• 3Y*: 4.84%
• 5Y*: 0.50%
• 10Y*: 1.88%

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

FBKWX vs. PBDIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FBKWX Fidelity Advisor Total Bond Fund Class Z	0.61%	7.60%	2.20%	6.56%	-13.55%	-0.27%	9.46%	9.88%	-0.56%	4.39%
PBDIX T. Rowe Price QM U.S. Bond Index Fund	0.20%	8.71%	2.66%	6.02%	-14.24%	-1.45%	8.17%	8.69%	-0.01%	3.83%

Correlation

The correlation between FBKWX and PBDIX is 0.88, 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	0.88
Correlation (3Y) Calculated over the trailing 3-year period	0.94
Correlation (5Y) Calculated over the trailing 5-year period	0.95
Correlation (10Y) Calculated over the trailing 10-year period	0.93
Correlation (All Time) Calculated using the full available price history since Jan 5, 2015	0.93

The correlation between FBKWX and PBDIX has been stable across timeframes, ranging from 0.88 to 0.95 - a consistent structural relationship.

Return for Risk

FBKWX vs. PBDIX — Risk / Return Rank

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

FBKWX

FBKWX Risk / Return Rank: 27
FBKWX Sharpe Ratio Rank: 27
FBKWX Sortino Ratio Rank: 29
FBKWX Omega Ratio Rank: 25
FBKWX Calmar Ratio Rank: 29
FBKWX Martin Ratio Rank: 24

PBDIX

PBDIX Risk / Return Rank: 33
PBDIX Sharpe Ratio Rank: 33
PBDIX Sortino Ratio Rank: 35
PBDIX Omega Ratio Rank: 32
PBDIX Calmar Ratio Rank: 35
PBDIX Martin Ratio Rank: 27

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. PBDIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Advisor Total Bond Fund Class Z (FBKWX) and T. Rowe Price QM U.S. Bond Index Fund (PBDIX). 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.

	FBKWX	PBDIX	Difference
Sharpe ratio: Return per unit of total volatility	1.48	1.63	-0.16
Sortino ratio: Return per unit of downside risk	2.23	2.46	-0.23
Omega ratio: Gain probability vs. loss probability	1.26	1.30	-0.04
Calmar ratio: Return relative to maximum drawdown	2.03	2.24	-0.20
Martin ratio: Return relative to average drawdown	6.08	6.58	-0.50
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FBKWX vs. PBDIX - Sharpe Ratio Comparison

The current FBKWX Sharpe Ratio is 1.48, which is comparable to the PBDIX Sharpe Ratio of 1.63. The chart below compares the historical Sharpe Ratios of FBKWX and PBDIX, 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

	FBKWX	PBDIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.48	1.63	-0.16
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.12	0.08	+0.04
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.53	0.38	+0.15
Sharpe Ratio (All Time) Calculated using the full available price history	0.56	0.85	-0.29

Drawdowns

FBKWX vs. PBDIX - Drawdown Comparison

The maximum FBKWX drawdown since its inception was -18.31%, roughly equal to the maximum PBDIX drawdown of -19.20%. Use the drawdown chart below to compare losses from any high point for FBKWX and PBDIX.

Drawdown Indicators

	FBKWX	PBDIX	Difference
Max Drawdown Largest peak-to-trough decline	-18.31%	-19.20%	+0.89%
Max Drawdown (1Y) Largest decline over 1 year	-2.88%	-3.08%	+0.20%
Max Drawdown (3Y) Largest decline over 3 years	-5.82%	-6.19%	+0.37%
Max Drawdown (5Y) Largest decline over 5 years	-18.31%	-19.10%	+0.79%
Max Drawdown (10Y) Largest decline over 10 years	-18.31%	-19.20%	+0.89%
Current Drawdown Current decline from peak	-1.29%	-1.60%	+0.31%
Average Drawdown Average peak-to-trough decline	-3.66%	-2.45%	-1.21%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.96%	1.03%	-0.07%

Volatility

FBKWX vs. PBDIX - Volatility Comparison

The current volatility for Fidelity Advisor Total Bond Fund Class Z (FBKWX) is 1.35%, while T. Rowe Price QM U.S. Bond Index Fund (PBDIX) has a volatility of 1.49%. This indicates that FBKWX experiences smaller price fluctuations and is considered to be less risky than PBDIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FBKWX	PBDIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.35%	1.49%	-0.14%
Volatility (6M) Calculated over the trailing 6-month period	2.80%	3.09%	-0.29%
Volatility (1Y) Calculated over the trailing 1-year period	3.98%	4.22%	-0.24%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.70%	6.06%	-0.36%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.76%	4.99%	-0.23%

FBKWX vs. PBDIX - Expense Ratio Comparison

FBKWX has a 0.36% expense ratio, which is higher than PBDIX's 0.23% expense ratio.

Dividends

FBKWX vs. PBDIX - Dividend Comparison

FBKWX's dividend yield for the trailing twelve months is around 4.44%, less than PBDIX's 5.68% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FBKWX Fidelity Advisor Total Bond Fund Class Z	4.44%	4.45%	4.22%	3.52%	2.59%	1.97%	5.32%	3.11%	3.30%	3.07%	3.71%	3.38%
PBDIX T. Rowe Price QM U.S. Bond Index Fund	5.68%	5.59%	5.17%	4.00%	2.01%	1.84%	3.59%	3.18%	2.94%	2.75%	2.82%	2.99%

Frequently Asked Questions

Can I hold both FBKWX and PBDIX in my portfolio?

FBKWX and PBDIX have a correlation of 0.88, 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 PBDIX?

PBDIX has higher volatility (1.49%) compared to FBKWX (1.35%). In terms of maximum drawdown, FBKWX dropped -18.31% vs PBDIX's -19.20%.

Which has better risk-adjusted returns?

PBDIX currently has the higher Sharpe Ratio (1.63 vs 1.48), 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.