BPRIX vs. FNSOX

Last updated Apr 1, 2026

Compare and contrast key facts about BlackRock Inflation Protected Bond Fund (BPRIX) and Fidelity Short-Term Bond Index Fund (FNSOX).

BPRIX is managed by BlackRock. It was launched on Jun 27, 2004. FNSOX is managed by Fidelity. It was launched on Oct 18, 2017.

Performance

BPRIX vs. FNSOX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in BlackRock Inflation Protected Bond Fund (BPRIX) and Fidelity Short-Term Bond Index Fund (FNSOX). The values are adjusted to include any dividend payments, if applicable.

BPRIX vs. FNSOX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BPRIX BlackRock Inflation Protected Bond Fund	0.00%	6.84%	1.41%	2.92%	-12.87%	5.76%	11.76%	8.33%	-1.85%	1.20%
FNSOX Fidelity Short-Term Bond Index Fund	-0.22%	6.01%	3.90%	4.90%	-5.76%	-1.25%	4.28%	4.95%	1.14%	-0.22%

Returns By Period

BPRIX

• 1D: 0.62%
• 1M: -1.80%
• YTD: -0.00%
• 6M: -0.17%
• 1Y: 2.66%
• 3Y*: 2.38%
• 5Y*: 0.75%
• 10Y*: 2.39%

FNSOX

• 1D: 0.20%
• 1M: -1.18%
• YTD: -0.22%
• 6M: 0.91%
• 1Y: 3.69%
• 3Y*: 4.22%
• 5Y*: 1.56%
• 10Y*: —

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

BPRIX vs. FNSOX - Expense Ratio Comparison

BPRIX has a 0.40% expense ratio, which is higher than FNSOX's 0.03% expense ratio.

BPRIX

BlackRock Inflation Protected Bond Fund

FNSOX

Fidelity Short-Term Bond Index Fund

Return for Risk

BPRIX vs. FNSOX — Risk / Return Rank

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

BPRIX

BPRIX Risk / Return Rank: 44
BPRIX Sharpe Ratio Rank: 44
BPRIX Sortino Ratio Rank: 41
BPRIX Omega Ratio Rank: 36
BPRIX Calmar Ratio Rank: 55
BPRIX Martin Ratio Rank: 43

FNSOX

FNSOX Risk / Return Rank: 91
FNSOX Sharpe Ratio Rank: 89
FNSOX Sortino Ratio Rank: 93
FNSOX Omega Ratio Rank: 88
FNSOX Calmar Ratio Rank: 93
FNSOX Martin Ratio Rank: 91

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.

BPRIX vs. FNSOX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for BlackRock Inflation Protected Bond Fund (BPRIX) and Fidelity Short-Term Bond Index Fund (FNSOX). 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.

	BPRIX	FNSOX	Difference
Sharpe ratio Return per unit of total volatility	0.88	1.82	-0.94
Sortino ratio Return per unit of downside risk	1.25	2.83	-1.58
Omega ratio Gain probability vs. loss probability	1.17	1.37	-0.21
Calmar ratio Return relative to maximum drawdown	1.30	2.86	-1.56
Martin ratio Return relative to average drawdown	4.33	10.76	-6.43
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BPRIX vs. FNSOX - Sharpe Ratio Comparison

The current BPRIX Sharpe Ratio is 0.88, which is lower than the FNSOX Sharpe Ratio of 1.82. The chart below compares the historical Sharpe Ratios of BPRIX and FNSOX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	BPRIX	FNSOX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.88	1.82	-0.94
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.12	0.55	-0.43
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.43	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.60	0.83	-0.23

Correlation

The correlation between BPRIX and FNSOX is 0.66, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

BPRIX vs. FNSOX - Dividend Comparison

BPRIX's dividend yield for the trailing twelve months is around 3.56%, more than FNSOX's 3.15% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BPRIX BlackRock Inflation Protected Bond Fund	3.56%	4.47%	3.38%	2.48%	6.04%	6.39%	1.48%	2.34%	2.78%	2.20%	1.19%	2.07%
FNSOX Fidelity Short-Term Bond Index Fund	3.15%	3.22%	2.80%	1.74%	0.81%	0.80%	1.54%	2.61%	2.04%	0.34%	0.00%	0.00%

Drawdowns

BPRIX vs. FNSOX - Drawdown Comparison

The maximum BPRIX drawdown since its inception was -15.52%, which is greater than FNSOX's maximum drawdown of -8.92%. Use the drawdown chart below to compare losses from any high point for BPRIX and FNSOX.

Drawdown Indicators

	BPRIX	FNSOX	Difference
Max Drawdown Largest peak-to-trough decline	-15.52%	-8.92%	-6.60%
Max Drawdown (1Y) Largest decline over 1 year	-3.22%	-1.47%	-1.75%
Max Drawdown (5Y) Largest decline over 5 years	-15.52%	-8.77%	-6.75%
Max Drawdown (10Y) Largest decline over 10 years	-15.52%	—	—
Current Drawdown Current decline from peak	-3.23%	-1.18%	-2.05%
Average Drawdown Average peak-to-trough decline	-3.82%	-1.75%	-2.07%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.96%	0.39%	+0.57%

Volatility

BPRIX vs. FNSOX - Volatility Comparison

BlackRock Inflation Protected Bond Fund (BPRIX) has a higher volatility of 1.41% compared to Fidelity Short-Term Bond Index Fund (FNSOX) at 0.78%. This indicates that BPRIX's price experiences larger fluctuations and is considered to be riskier than FNSOX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BPRIX	FNSOX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.41%	0.78%	+0.63%
Volatility (6M) Calculated over the trailing 6-month period	2.28%	1.37%	+0.91%
Volatility (1Y) Calculated over the trailing 1-year period	4.28%	2.21%	+2.07%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.12%	2.86%	+3.26%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.52%	2.48%	+3.04%