GOVZ vs. ZROZ

Last updated Apr 1, 2026

Compare and contrast key facts about iShares 25+ Year Treasury STRIPS Bond ETF (GOVZ) and PIMCO 25+ Year Zero Coupon US Treasury Index Fund (ZROZ).

GOVZ and ZROZ are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. GOVZ is a passively managed fund by iShares that tracks the performance of the ICE BofA Long US Treasury Principal STRIPS Index. It was launched on Sep 22, 2020. ZROZ is a passively managed fund by PIMCO that tracks the performance of the BofA Merrill Lynch Long Treasury Principal STRIPS Index. It was launched on Oct 30, 2009. Both GOVZ and ZROZ are passive ETFs, meaning that they are not actively managed but aim to replicate the performance of the underlying index as closely as possible.

Performance

GOVZ vs. ZROZ - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares 25+ Year Treasury STRIPS Bond ETF (GOVZ) and PIMCO 25+ Year Zero Coupon US Treasury Index Fund (ZROZ). The values are adjusted to include any dividend payments, if applicable.

GOVZ vs. ZROZ - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
GOVZ iShares 25+ Year Treasury STRIPS Bond ETF	-0.07%	-1.81%	-16.24%	0.90%	-41.03%	-4.86%	-5.61%
ZROZ PIMCO 25+ Year Zero Coupon US Treasury Index Fund	-0.37%	-1.84%	-16.18%	1.19%	-41.28%	-5.22%	-5.64%

Returns By Period

In the year-to-date period, GOVZ achieves a -0.07% return, which is significantly higher than ZROZ's -0.37% return.

GOVZ

• 1D: -0.43%
• 1M: -6.18%
• YTD: -0.07%
• 6M: -3.49%
• 1Y: -6.30%
• 3Y*: -8.76%
• 5Y*: -10.89%
• 10Y*: —

ZROZ

• 1D: -0.61%
• 1M: -6.35%
• YTD: -0.37%
• 6M: -3.49%
• 1Y: -6.32%
• 3Y*: -8.90%
• 5Y*: -11.00%
• 10Y*: -3.82%

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

GOVZ vs. ZROZ - Expense Ratio Comparison

Both GOVZ and ZROZ have an expense ratio of 0.15%, making them cost-effective options compared to the broader market, where average expense ratios typically range from 0.3% to 0.9%.

GOVZ

iShares 25+ Year Treasury STRIPS Bond ETF

ZROZ

PIMCO 25+ Year Zero Coupon US Treasury Index Fund

Return for Risk

GOVZ vs. ZROZ — Risk / Return Rank

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

GOVZ

GOVZ Risk / Return Rank: 7
GOVZ Sharpe Ratio Rank: 6
GOVZ Sortino Ratio Rank: 6
GOVZ Omega Ratio Rank: 6
GOVZ Calmar Ratio Rank: 8
GOVZ Martin Ratio Rank: 8

ZROZ

ZROZ Risk / Return Rank: 7
ZROZ Sharpe Ratio Rank: 6
ZROZ Sortino Ratio Rank: 6
ZROZ Omega Ratio Rank: 6
ZROZ Calmar Ratio Rank: 7
ZROZ Martin Ratio Rank: 8

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.

GOVZ vs. ZROZ - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares 25+ Year Treasury STRIPS Bond ETF (GOVZ) and PIMCO 25+ Year Zero Coupon US Treasury Index Fund (ZROZ). 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.

	GOVZ	ZROZ	Difference
Sharpe ratio Return per unit of total volatility	-0.33	-0.33	0.00
Sortino ratio Return per unit of downside risk	-0.33	-0.34	+0.01
Omega ratio Gain probability vs. loss probability	0.96	0.96	0.00
Calmar ratio Return relative to maximum drawdown	-0.29	-0.30	+0.01
Martin ratio Return relative to average drawdown	-0.50	-0.53	+0.03
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

GOVZ vs. ZROZ - Sharpe Ratio Comparison

The current GOVZ Sharpe Ratio is -0.33, which is comparable to the ZROZ Sharpe Ratio of -0.33. The chart below compares the historical Sharpe Ratios of GOVZ and ZROZ, 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

	GOVZ	ZROZ	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.33	-0.33	0.00
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.46	-0.46	+0.01
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	-0.17	—
Sharpe Ratio (All Time) Calculated using the full available price history	-0.59	0.09	-0.68

Correlation

The correlation between GOVZ and ZROZ is 0.99, 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

GOVZ vs. ZROZ - Dividend Comparison

GOVZ's dividend yield for the trailing twelve months is around 5.04%, more than ZROZ's 4.98% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
GOVZ iShares 25+ Year Treasury STRIPS Bond ETF	5.04%	5.00%	4.68%	3.84%	3.69%	1.76%	0.39%	0.00%	0.00%	0.00%	0.00%	0.00%
ZROZ PIMCO 25+ Year Zero Coupon US Treasury Index Fund	4.98%	4.96%	4.58%	3.52%	2.76%	1.60%	1.68%	2.22%	2.06%	2.53%	3.00%	2.98%

Drawdowns

GOVZ vs. ZROZ - Drawdown Comparison

The maximum GOVZ drawdown since its inception was -59.65%, smaller than the maximum ZROZ drawdown of -62.93%. Use the drawdown chart below to compare losses from any high point for GOVZ and ZROZ.

Drawdown Indicators

	GOVZ	ZROZ	Difference
Max Drawdown Largest peak-to-trough decline	-59.65%	-62.93%	+3.28%
Max Drawdown (1Y) Largest decline over 1 year	-16.08%	-15.63%	-0.45%
Max Drawdown (5Y) Largest decline over 5 years	-57.63%	-57.98%	+0.35%
Max Drawdown (10Y) Largest decline over 10 years	—	-62.93%	—
Current Drawdown Current decline from peak	-56.09%	-59.65%	+3.56%
Average Drawdown Average peak-to-trough decline	-39.38%	-23.66%	-15.72%
Ulcer Index Depth and duration of drawdowns from previous peaks	9.40%	8.99%	+0.41%

Volatility

GOVZ vs. ZROZ - Volatility Comparison

iShares 25+ Year Treasury STRIPS Bond ETF (GOVZ) and PIMCO 25+ Year Zero Coupon US Treasury Index Fund (ZROZ) have volatilities of 5.79% and 5.79%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	GOVZ	ZROZ	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.79%	5.79%	0.00%
Volatility (6M) Calculated over the trailing 6-month period	10.94%	10.85%	+0.09%
Volatility (1Y) Calculated over the trailing 1-year period	19.33%	19.16%	+0.17%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	23.95%	23.93%	+0.02%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	23.61%	22.09%	+1.52%