EDV vs. ZROZ

Last updated Apr 1, 2026

Compare and contrast key facts about Vanguard Extended Duration Treasury ETF (EDV) and PIMCO 25+ Year Zero Coupon US Treasury Index Fund (ZROZ).

EDV and ZROZ are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. EDV is a passively managed fund by Vanguard that tracks the performance of the Barclays Capital U.S. Treasury STRIPS 20-30 Year Equal Par Bond Index. It was launched on Dec 6, 2007. 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 EDV 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

EDV vs. ZROZ - Performance Comparison

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

EDV vs. ZROZ - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
EDV Vanguard Extended Duration Treasury ETF	-0.09%	0.65%	-12.78%	1.65%	-39.15%	-6.19%	23.59%	18.67%	-3.40%	13.94%
ZROZ PIMCO 25+ Year Zero Coupon US Treasury Index Fund	-0.37%	-1.84%	-16.18%	1.19%	-41.28%	-5.22%	24.57%	21.22%	-5.43%	14.77%

Returns By Period

In the year-to-date period, EDV achieves a -0.09% return, which is significantly higher than ZROZ's -0.37% return. Over the past 10 years, EDV has outperformed ZROZ with an annualized return of -2.98%, while ZROZ has yielded a comparatively lower -3.82% annualized return.

EDV

• 1D: -0.29%
• 1M: -6.06%
• YTD: -0.09%
• 6M: -2.80%
• 1Y: -4.24%
• 3Y*: -6.57%
• 5Y*: -9.52%
• 10Y*: -2.98%

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)

EDV vs. ZROZ - Expense Ratio Comparison

EDV has a 0.06% expense ratio, which is lower than ZROZ's 0.15% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

ZROZ

PIMCO 25+ Year Zero Coupon US Treasury Index Fund

EDV

Vanguard Extended Duration Treasury ETF

Return for Risk

EDV vs. ZROZ — Risk / Return Rank

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

EDV

EDV Risk / Return Rank: 8
EDV Sharpe Ratio Rank: 8
EDV Sortino Ratio Rank: 7
EDV Omega Ratio Rank: 7
EDV Calmar Ratio Rank: 9
EDV Martin Ratio Rank: 9

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.

EDV vs. ZROZ - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Extended Duration Treasury ETF (EDV) 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.

	EDV	ZROZ	Difference
Sharpe ratio Return per unit of total volatility	-0.25	-0.33	+0.09
Sortino ratio Return per unit of downside risk	-0.22	-0.34	+0.11
Omega ratio Gain probability vs. loss probability	0.97	0.96	+0.01
Calmar ratio Return relative to maximum drawdown	-0.20	-0.30	+0.10
Martin ratio Return relative to average drawdown	-0.39	-0.53	+0.14
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

EDV vs. ZROZ - Sharpe Ratio Comparison

The current EDV Sharpe Ratio is -0.25, which is comparable to the ZROZ Sharpe Ratio of -0.33. The chart below compares the historical Sharpe Ratios of EDV 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

	EDV	ZROZ	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.25	-0.33	+0.09
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.44	-0.46	+0.02
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	-0.15	-0.17	+0.02
Sharpe Ratio (All Time) Calculated using the full available price history	0.12	0.09	+0.03

Correlation

The correlation between EDV and ZROZ is 0.97, 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

EDV vs. ZROZ - Dividend Comparison

EDV's dividend yield for the trailing twelve months is around 4.94%, which matches ZROZ's 4.98% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
EDV Vanguard Extended Duration Treasury ETF	3.72%	4.94%	4.65%	3.81%	3.28%	1.95%	5.54%	3.51%	2.90%	2.92%	5.32%	4.24%
ZROZ PIMCO 25+ Year Zero Coupon US Treasury Index Fund	3.77%	4.96%	4.58%	3.52%	2.76%	1.60%	1.68%	2.22%	2.06%	2.53%	3.00%	2.98%

Drawdowns

EDV vs. ZROZ - Drawdown Comparison

The maximum EDV drawdown since its inception was -59.96%, roughly equal to the maximum ZROZ drawdown of -62.93%. Use the drawdown chart below to compare losses from any high point for EDV and ZROZ.

Drawdown Indicators

	EDV	ZROZ	Difference
Max Drawdown Largest peak-to-trough decline	-59.96%	-62.93%	+2.97%
Max Drawdown (1Y) Largest decline over 1 year	-13.84%	-15.63%	+1.79%
Max Drawdown (5Y) Largest decline over 5 years	-55.03%	-57.98%	+2.95%
Max Drawdown (10Y) Largest decline over 10 years	-59.96%	-62.93%	+2.97%
Current Drawdown Current decline from peak	-54.16%	-59.65%	+5.49%
Average Drawdown Average peak-to-trough decline	-23.14%	-23.66%	+0.52%
Ulcer Index Depth and duration of drawdowns from previous peaks	7.24%	8.99%	-1.75%

Volatility

EDV vs. ZROZ - Volatility Comparison

The current volatility for Vanguard Extended Duration Treasury ETF (EDV) is 5.45%, while PIMCO 25+ Year Zero Coupon US Treasury Index Fund (ZROZ) has a volatility of 5.79%. This indicates that EDV experiences smaller price fluctuations and is considered to be less risky than ZROZ based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	EDV	ZROZ	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.45%	5.79%	-0.34%
Volatility (6M) Calculated over the trailing 6-month period	9.92%	10.85%	-0.93%
Volatility (1Y) Calculated over the trailing 1-year period	17.29%	19.16%	-1.87%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.64%	23.93%	-2.29%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.85%	22.09%	-2.24%