BPRIX vs. ACITX

Last updated Jun 4, 2026

BPRIX (BlackRock Inflation Protected Bond Fund) and ACITX (American Century Inflation-Adjusted Bond Fund) are both Inflation-Protected Bonds funds. Over the past 10 years, BPRIX returned 2.50%/yr vs 2.66%/yr for ACITX. Their correlation of 0.92 suggests significant overlap in exposure. BPRIX charges 0.40%/yr vs 0.46%/yr for ACITX.

Performance

BPRIX vs. ACITX - Performance Comparison

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

Returns By Period

The year-to-date returns for both investments are quite close, with BPRIX having a 1.65% return and ACITX slightly higher at 1.70%. Over the past 10 years, BPRIX has underperformed ACITX with an annualized return of 2.50%, while ACITX has yielded a comparatively higher 2.66% annualized return.

BPRIX

• 1D: -0.10%
• 1M: 0.22%
• YTD: 1.65%
• 6M: 1.18%
• 1Y: 5.17%
• 3Y*: 3.45%
• 5Y*: 0.61%
• 10Y*: 2.50%

ACITX

• 1D: 0.00%
• 1M: 0.09%
• YTD: 1.70%
• 6M: 1.24%
• 1Y: 5.14%
• 3Y*: 3.75%
• 5Y*: 0.92%
• 10Y*: 2.66%

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

BPRIX vs. ACITX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BPRIX BlackRock Inflation Protected Bond Fund	1.65%	6.84%	1.41%	2.92%	-12.87%	5.76%	11.76%	8.33%	-1.85%	3.10%
ACITX American Century Inflation-Adjusted Bond Fund	1.70%	6.68%	1.68%	3.17%	-12.37%	6.38%	10.28%	7.85%	-1.21%	4.47%

Correlation

The correlation between BPRIX and ACITX is 0.91, 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	0.91
Correlation (3Y) Calculated over the trailing 3-year period	0.93
Correlation (5Y) Calculated over the trailing 5-year period	0.94
Correlation (10Y) Calculated over the trailing 10-year period	0.91
Correlation (All Time) Calculated using the full available price history since Jun 30, 2004	0.92

The correlation between BPRIX and ACITX has been stable across timeframes, ranging from 0.91 to 0.94 - a consistent structural relationship.

Return for Risk

BPRIX vs. ACITX — Risk / Return Rank

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

BPRIX

BPRIX Risk / Return Rank: 29
BPRIX Sharpe Ratio Rank: 25
BPRIX Sortino Ratio Rank: 30
BPRIX Omega Ratio Rank: 27
BPRIX Calmar Ratio Rank: 32
BPRIX Martin Ratio Rank: 30

ACITX

ACITX Risk / Return Rank: 34
ACITX Sharpe Ratio Rank: 30
ACITX Sortino Ratio Rank: 34
ACITX Omega Ratio Rank: 30
ACITX Calmar Ratio Rank: 43
ACITX Martin Ratio Rank: 36

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. ACITX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for BlackRock Inflation Protected Bond Fund (BPRIX) and American Century Inflation-Adjusted Bond Fund (ACITX). 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	ACITX	Difference
Sharpe ratio: Return per unit of total volatility	1.42	1.57	-0.15
Sortino ratio: Return per unit of downside risk	2.26	2.41	-0.15
Omega ratio: Gain probability vs. loss probability	1.27	1.29	-0.02
Calmar ratio: Return relative to maximum drawdown	2.12	2.47	-0.36
Martin ratio: Return relative to average drawdown	7.08	7.88	-0.79
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. ACITX - Sharpe Ratio Comparison

The current BPRIX Sharpe Ratio is 1.42, which is comparable to the ACITX Sharpe Ratio of 1.57. The chart below compares the historical Sharpe Ratios of BPRIX and ACITX, 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

	BPRIX	ACITX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.42	1.57	-0.15
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.10	0.15	-0.05
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.45	0.49	-0.03
Sharpe Ratio (All Time) Calculated using the full available price history	0.61	0.76	-0.15

Drawdowns

BPRIX vs. ACITX - Drawdown Comparison

The maximum BPRIX drawdown since its inception was -15.52%, roughly equal to the maximum ACITX drawdown of -15.50%. Use the drawdown chart below to compare losses from any high point for BPRIX and ACITX.

Drawdown Indicators

	BPRIX	ACITX	Difference
Max Drawdown Largest peak-to-trough decline	-15.52%	-15.50%	-0.02%
Max Drawdown (1Y) Largest decline over 1 year	-2.40%	-2.05%	-0.35%
Max Drawdown (3Y) Largest decline over 3 years	-5.11%	-5.08%	-0.03%
Max Drawdown (5Y) Largest decline over 5 years	-15.52%	-15.50%	-0.02%
Max Drawdown (10Y) Largest decline over 10 years	-15.52%	-15.50%	-0.02%
Current Drawdown Current decline from peak	-1.63%	-0.88%	-0.75%
Average Drawdown Average peak-to-trough decline	-3.81%	-3.24%	-0.57%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.72%	0.64%	+0.08%

Volatility

BPRIX vs. ACITX - Volatility Comparison

BlackRock Inflation Protected Bond Fund (BPRIX) has a higher volatility of 1.51% compared to American Century Inflation-Adjusted Bond Fund (ACITX) at 0.85%. This indicates that BPRIX's price experiences larger fluctuations and is considered to be riskier than ACITX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BPRIX	ACITX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.51%	0.85%	+0.66%
Volatility (6M) Calculated over the trailing 6-month period	2.68%	2.20%	+0.48%
Volatility (1Y) Calculated over the trailing 1-year period	3.60%	3.24%	+0.36%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.14%	6.14%	0.00%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.52%	5.50%	+0.02%

BPRIX vs. ACITX - Expense Ratio Comparison

BPRIX has a 0.40% expense ratio, which is lower than ACITX's 0.46% expense ratio.

Dividends

BPRIX vs. ACITX - Dividend Comparison

BPRIX's dividend yield for the trailing twelve months is around 4.66%, more than ACITX's 4.23% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ACITX American Century Inflation-Adjusted Bond Fund	4.23%	4.30%	2.19%	4.44%	7.34%	4.47%	1.16%	2.45%	4.31%	3.47%	2.27%	0.99%
BPRIX BlackRock Inflation Protected Bond Fund	4.66%	4.47%	3.38%	2.48%	6.04%	6.39%	1.48%	2.34%	2.78%	2.20%	1.19%	2.07%

Frequently Asked Questions

Can I hold both BPRIX and ACITX in my portfolio?

With a correlation of 0.91, BPRIX and ACITX 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, BPRIX or ACITX?

BPRIX has higher volatility (1.51%) compared to ACITX (0.85%). In terms of maximum drawdown, BPRIX dropped -15.52% vs ACITX's -15.50%.

Which has better risk-adjusted returns?

ACITX currently has the higher Sharpe Ratio (1.57 vs 1.42), 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.