IBDZ vs. VCLT
IBDZ (iShares iBonds Dec 2034 Term Corporate ETF) and VCLT (Vanguard Long-Term Corporate Bond ETF) are both Corporate Bonds funds - IBDZ tracks the iBonds Dec 2034 Term Corporate Index while VCLT tracks the Barclays U.S. 10+ Year Corporate Index. Both are passively managed. Over the past year, IBDZ returned 6.65% vs 7.69% for VCLT. Their correlation of 0.88 suggests significant overlap in exposure. IBDZ charges 0.10%/yr vs 0.04%/yr for VCLT.
Performance
IBDZ vs. VCLT - Performance Comparison
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Returns By Period
In the year-to-date period, IBDZ achieves a 0.34% return, which is significantly lower than VCLT's 0.99% return.
IBDZ
- 1D
- -0.19%
- 1M
- 0.37%
- YTD
- 0.34%
- 6M
- 0.33%
- 1Y
- 6.65%
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
VCLT
- 1D
- -0.35%
- 1M
- 1.49%
- YTD
- 0.99%
- 6M
- -0.04%
- 1Y
- 7.69%
- 3Y*
- 4.34%
- 5Y*
- -1.78%
- 10Y*
- 2.31%
IBDZ vs. VCLT - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | |
|---|---|---|---|
IBDZ iShares iBonds Dec 2034 Term Corporate ETF | 0.34% | 8.84% | 4.23% |
VCLT Vanguard Long-Term Corporate Bond ETF | 0.99% | 7.18% | 1.58% |
Correlation
The correlation between IBDZ and VCLT 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 (All Time) Calculated using the full available price history since May 28, 2024 | 0.88 |
The correlation between IBDZ and VCLT has been stable across timeframes, ranging from 0.88 to 0.91 - a consistent structural relationship.
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Return for Risk
IBDZ vs. VCLT — Risk / Return Rank
IBDZ
VCLT
IBDZ vs. VCLT - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares iBonds Dec 2034 Term Corporate ETF (IBDZ) and Vanguard Long-Term Corporate Bond ETF (VCLT). 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.
| IBDZ | VCLT | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.43 | ||
| Sortino ratioReturn per unit of downside risk | +0.66 | ||
| Omega ratioGain probability vs. loss probability | 1.24 | 1.17 | +0.07 |
| Calmar ratioReturn relative to maximum drawdown | 2.19 | 1.47 | +0.72 |
| Martin ratioReturn relative to average drawdown | 7.12 | 3.62 | +3.50 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| IBDZ | VCLT | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.41 | 0.97 | +0.43 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | — | -0.14 | — |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | 0.18 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 1.06 | 0.39 | +0.67 |
Drawdowns
IBDZ vs. VCLT - Drawdown Comparison
The maximum IBDZ drawdown since its inception was -5.57%, smaller than the maximum VCLT drawdown of -34.31%. Use the drawdown chart below to compare losses from any high point for IBDZ and VCLT.
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Drawdown Indicators
| IBDZ | VCLT | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -5.57% | -34.31% | +28.74% |
Max Drawdown (1Y)Largest decline over 1 year | -3.04% | -5.25% | +2.21% |
Max Drawdown (3Y)Largest decline over 3 years | — | -13.03% | — |
Max Drawdown (5Y)Largest decline over 5 years | — | -34.31% | — |
Max Drawdown (10Y)Largest decline over 10 years | — | -34.31% | — |
Current DrawdownCurrent decline from peak | -1.26% | -14.36% | +13.10% |
Average DrawdownAverage peak-to-trough decline | -1.28% | -8.16% | +6.88% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.94% | 2.13% | -1.19% |
Volatility
IBDZ vs. VCLT - Volatility Comparison
The current volatility for iShares iBonds Dec 2034 Term Corporate ETF (IBDZ) is 1.43%, while Vanguard Long-Term Corporate Bond ETF (VCLT) has a volatility of 2.31%. This indicates that IBDZ experiences smaller price fluctuations and is considered to be less risky than VCLT based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| IBDZ | VCLT | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.43% | 2.31% | -0.88% |
Volatility (6M)Calculated over the trailing 6-month period | 3.32% | 5.75% | -2.43% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.74% | 7.92% | -3.18% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.27% | 12.78% | -6.51% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 6.27% | 12.84% | -6.57% |
IBDZ vs. VCLT - Expense Ratio Comparison
IBDZ has a 0.10% expense ratio, which is higher than VCLT's 0.04% 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%.
Dividends
IBDZ vs. VCLT - Dividend Comparison
IBDZ's dividend yield for the trailing twelve months is around 4.86%, less than VCLT's 5.55% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
IBDZ iShares iBonds Dec 2034 Term Corporate ETF | 4.86% | 4.85% | 2.50% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
VCLT Vanguard Long-Term Corporate Bond ETF | 5.55% | 5.51% | 5.19% | 4.67% | 4.44% | 3.07% | 3.16% | 3.81% | 4.55% | 4.01% | 4.33% | 4.68% |
Frequently Asked Questions
With a correlation of 0.91, IBDZ and VCLT 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.
VCLT has higher volatility (2.31%) compared to IBDZ (1.43%). In terms of maximum drawdown, IBDZ dropped -5.57% vs VCLT's -34.31%.
On 1-year performance, VCLT leads with 7.69% vs 6.65% for IBDZ. On fees, VCLT is cheaper at 0.04% per year. On volatility, IBDZ has been the lower-risk option at 1.43%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 1-year period, VCLT has performed better with a 7.69% return vs 6.65%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
VCLT is cheaper with a 0.04% expense ratio, compared with 0.10% for IBDZ.
VCLT has the higher dividend yield at 5.55%, compared with 4.86% for IBDZ.
IBDZ tracks iBonds Dec 2034 Term Corporate Index, while VCLT tracks Barclays U.S. 10+ Year Corporate Index. They also come from different issuers: iShares and Vanguard. Their fees differ too: 0.10% for IBDZ and 0.04% for VCLT.
IBDZ currently has the higher Sharpe Ratio (1.41 vs 0.97), 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.
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