IGLB vs. VLCIX
IGLB (iShares 10+ Year Investment Grade Corporate Bond ETF) and VLCIX (Vanguard Long-Term Corporate Bond Index Fund Institutional Shares) are both Corporate Bonds funds. Over the past 10 years, IGLB returned 2.23%/yr vs 2.33%/yr for VLCIX. Their correlation of 0.87 suggests significant overlap in exposure. IGLB charges 0.06%/yr vs 0.05%/yr for VLCIX.
Performance
IGLB vs. VLCIX - Performance Comparison
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Returns By Period
In the year-to-date period, IGLB achieves a 1.43% return, which is significantly higher than VLCIX's 1.03% return. Both investments have delivered pretty close results over the past 10 years, with IGLB having a 2.23% annualized return and VLCIX not far ahead at 2.33%.
IGLB
- 1D
- 0.24%
- 1M
- 1.60%
- YTD
- 1.43%
- 6M
- 1.25%
- 1Y
- 6.60%
- 3Y*
- 4.34%
- 5Y*
- -2.03%
- 10Y*
- 2.23%
VLCIX
- 1D
- -0.56%
- 1M
- 1.20%
- YTD
- 1.03%
- 6M
- 0.95%
- 1Y
- 6.08%
- 3Y*
- 4.21%
- 5Y*
- -2.12%
- 10Y*
- 2.33%
IGLB vs. VLCIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
IGLB iShares 10+ Year Investment Grade Corporate Bond ETF | 1.43% | 7.53% | -1.50% | 11.03% | -25.38% | -1.68% | 13.30% | 23.19% | -6.90% | 12.15% |
VLCIX Vanguard Long-Term Corporate Bond Index Fund Institutional Shares | 1.03% | 7.27% | -1.43% | 11.06% | -25.75% | -1.24% | 13.74% | 23.18% | -6.86% | 12.42% |
Correlation
The correlation between IGLB and VLCIX is 0.97 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.97 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.98 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.95 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.91 |
Correlation (All Time) Calculated using the full available price history since Dec 9, 2009 | 0.87 |
The correlation between IGLB and VLCIX shifts across timeframes, from 0.87 (all time) to 0.98 (3 years), reflecting how their relationship changes across market environments.
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Return for Risk
IGLB vs. VLCIX — Risk / Return Rank
IGLB
VLCIX
IGLB vs. VLCIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares 10+ Year Investment Grade Corporate Bond ETF (IGLB) and Vanguard Long-Term Corporate Bond Index Fund Institutional Shares (VLCIX). 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.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| IGLB | VLCIX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.02 | ||
| Sortino ratioReturn per unit of downside risk | +0.02 | ||
| Omega ratioGain probability vs. loss probability | 1.15 | 1.15 | 0.00 |
| Calmar ratioReturn relative to maximum drawdown | 1.28 | 1.20 | +0.08 |
| Martin ratioReturn relative to average drawdown | 3.15 | 2.90 | +0.25 |
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Drawdowns
IGLB vs. VLCIX - Drawdown Comparison
The maximum IGLB drawdown since its inception was -34.12%, roughly equal to the maximum VLCIX drawdown of -34.56%. Use the drawdown chart below to compare losses from any high point for IGLB and VLCIX.
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Drawdown Indicators
| IGLB | VLCIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -34.12% | -34.56% | +0.44% |
Max Drawdown (1Y)Largest decline over 1 year | -5.19% | -5.26% | +0.07% |
Max Drawdown (3Y)Largest decline over 3 years | -12.87% | -12.86% | -0.01% |
Max Drawdown (5Y)Largest decline over 5 years | -34.12% | -34.56% | +0.44% |
Max Drawdown (10Y)Largest decline over 10 years | -34.12% | -34.56% | +0.44% |
Current DrawdownCurrent decline from peak | -13.20% | -13.91% | +0.71% |
Average DrawdownAverage peak-to-trough decline | -8.12% | -8.05% | -0.07% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 2.10% | 2.18% | -0.08% |
Volatility
IGLB vs. VLCIX - Volatility Comparison
iShares 10+ Year Investment Grade Corporate Bond ETF (IGLB) and Vanguard Long-Term Corporate Bond Index Fund Institutional Shares (VLCIX) have volatilities of 1.89% and 1.93%, 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.
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Volatility by Period
| IGLB | VLCIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.89% | 1.93% | -0.04% |
Volatility (6M)Calculated over the trailing 6-month period | 5.78% | 5.55% | +0.23% |
Volatility (1Y)Calculated over the trailing 1-year period | 7.74% | 7.54% | +0.20% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 12.38% | 11.85% | +0.53% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 12.54% | 10.62% | +1.92% |
IGLB vs. VLCIX - Expense Ratio Comparison
IGLB has a 0.06% expense ratio, which is higher than VLCIX's 0.05% 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
IGLB vs. VLCIX - Dividend Comparison
IGLB's dividend yield for the trailing twelve months is around 5.23%, less than VLCIX's 5.53% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
IGLB iShares 10+ Year Investment Grade Corporate Bond ETF | 5.23% | 5.14% | 5.10% | 4.59% | 4.56% | 3.16% | 3.22% | 3.73% | 4.56% | 3.94% | 4.21% | 4.58% |
VLCIX Vanguard Long-Term Corporate Bond Index Fund Institutional Shares | 5.53% | 5.50% | 5.60% | 4.67% | 4.43% | 2.95% | 3.17% | 3.83% | 4.58% | 4.03% | 4.39% | 4.73% |
Frequently Asked Questions
With a correlation of 0.97, IGLB and VLCIX 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.
VLCIX has higher volatility (1.93%) compared to IGLB (1.89%). In terms of maximum drawdown, IGLB dropped -34.12% vs VLCIX's -34.56%.
IGLB currently has the higher Sharpe Ratio (0.86 vs 0.84), 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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