BKIPX vs. FSTZX

Last updated Apr 1, 2026

Compare and contrast key facts about iShares Short-Term TIPS Bond Index Fund Class K (BKIPX) and Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund (FSTZX).

BKIPX is a passively managed fund by iShares that tracks the performance of the Bloomberg U.S. Treasury Inflation-Protected Securities (TIPS) 0-5 Years Index. It was launched on Feb 16, 2016. FSTZX is managed by Fidelity. It was launched on Jan 17, 2022.

Performance

BKIPX vs. FSTZX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares Short-Term TIPS Bond Index Fund Class K (BKIPX) and Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund (FSTZX). The values are adjusted to include any dividend payments, if applicable.

BKIPX vs. FSTZX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
BKIPX iShares Short-Term TIPS Bond Index Fund Class K	0.73%	6.08%	4.77%	3.37%	-4.18%	1.69%
FSTZX Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund	1.02%	5.99%	4.87%	4.67%	-2.83%	1.32%

Returns By Period

In the year-to-date period, BKIPX achieves a 0.73% return, which is significantly lower than FSTZX's 1.02% return.

BKIPX

• 1D: 0.20%
• 1M: -0.20%
• YTD: 0.73%
• 6M: 1.06%
• 1Y: 3.68%
• 3Y*: 4.22%
• 5Y*: 2.90%
• 10Y*: —

FSTZX

• 1D: 0.30%
• 1M: -0.00%
• YTD: 1.02%
• 6M: 1.30%
• 1Y: 3.95%
• 3Y*: 4.75%
• 5Y*: —
• 10Y*: —

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

BKIPX vs. FSTZX - Expense Ratio Comparison

BKIPX has a 0.06% expense ratio, which is higher than FSTZX's 0.00% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

BKIPX

iShares Short-Term TIPS Bond Index Fund Class K

FSTZX

Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund

Return for Risk

BKIPX vs. FSTZX — Risk / Return Rank

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

BKIPX

BKIPX Risk / Return Rank: 93
BKIPX Sharpe Ratio Rank: 89
BKIPX Sortino Ratio Rank: 95
BKIPX Omega Ratio Rank: 92
BKIPX Calmar Ratio Rank: 97
BKIPX Martin Ratio Rank: 94

FSTZX

FSTZX Risk / Return Rank: 95
FSTZX Sharpe Ratio Rank: 93
FSTZX Sortino Ratio Rank: 95
FSTZX Omega Ratio Rank: 93
FSTZX Calmar Ratio Rank: 97
FSTZX Martin Ratio Rank: 96

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.

BKIPX vs. FSTZX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares Short-Term TIPS Bond Index Fund Class K (BKIPX) and Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund (FSTZX). 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.

	BKIPX	FSTZX	Difference
Sharpe ratio Return per unit of total volatility	1.84	2.05	-0.21
Sortino ratio Return per unit of downside risk	3.16	3.11	+0.05
Omega ratio Gain probability vs. loss probability	1.44	1.45	-0.01
Calmar ratio Return relative to maximum drawdown	4.28	4.22	+0.06
Martin ratio Return relative to average drawdown	12.41	14.91	-2.50
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BKIPX vs. FSTZX - Sharpe Ratio Comparison

The current BKIPX Sharpe Ratio is 1.84, which is comparable to the FSTZX Sharpe Ratio of 2.05. The chart below compares the historical Sharpe Ratios of BKIPX and FSTZX, 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

	BKIPX	FSTZX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.84	2.05	-0.21
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.95	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.11	1.14	-0.03

Correlation

The correlation between BKIPX and FSTZX is 0.83, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.

Dividends

BKIPX vs. FSTZX - Dividend Comparison

BKIPX's dividend yield for the trailing twelve months is around 3.60%, less than FSTZX's 3.98% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
BKIPX iShares Short-Term TIPS Bond Index Fund Class K	3.60%	4.68%	4.33%	2.77%	4.80%	4.41%	1.17%	2.54%	2.56%	1.90%
FSTZX Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund	3.98%	4.02%	2.78%	2.54%	5.25%	0.82%	0.00%	0.00%	0.00%	0.00%

Drawdowns

BKIPX vs. FSTZX - Drawdown Comparison

The maximum BKIPX drawdown since its inception was -6.42%, which is greater than FSTZX's maximum drawdown of -5.30%. Use the drawdown chart below to compare losses from any high point for BKIPX and FSTZX.

Drawdown Indicators

	BKIPX	FSTZX	Difference
Max Drawdown Largest peak-to-trough decline	-6.42%	-5.30%	-1.12%
Max Drawdown (1Y) Largest decline over 1 year	-1.12%	-1.03%	-0.09%
Max Drawdown (5Y) Largest decline over 5 years	-6.42%	—	—
Current Drawdown Current decline from peak	-0.51%	-0.30%	-0.21%
Average Drawdown Average peak-to-trough decline	-1.08%	-1.13%	+0.05%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.39%	0.29%	+0.10%

Volatility

BKIPX vs. FSTZX - Volatility Comparison

iShares Short-Term TIPS Bond Index Fund Class K (BKIPX) has a higher volatility of 0.66% compared to Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund (FSTZX) at 0.58%. This indicates that BKIPX's price experiences larger fluctuations and is considered to be riskier than FSTZX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BKIPX	FSTZX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.66%	0.58%	+0.08%
Volatility (6M) Calculated over the trailing 6-month period	1.27%	1.07%	+0.20%
Volatility (1Y) Calculated over the trailing 1-year period	2.51%	1.99%	+0.52%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.08%	2.83%	+0.25%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.62%	2.83%	-0.21%