FEIG vs. USIG
FEIG (FlexShares ESG & Climate Investment Grade Corporate Core Index Fund) and USIG (iShares Broad USD Investment Grade Corporate Bond ETF) are both Corporate Bonds funds - FEIG tracks the Northern Trust ESG & Climate Investment Grade U.S. Corporate Core TR while USIG tracks the ICE BofA US Corporate. Both are passively managed. Over the past 3 years, FEIG returned 4.96%/yr vs 5.45%/yr for USIG. With a 0.98 correlation, they move nearly in lockstep. FEIG charges 0.12%/yr vs 0.04%/yr for USIG.
Performance
FEIG vs. USIG - Performance Comparison
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Returns By Period
In the year-to-date period, FEIG achieves a 0.68% return, which is significantly lower than USIG's 0.83% return.
FEIG
- 1D
- 0.16%
- 1M
- 0.73%
- YTD
- 0.68%
- 6M
- 0.82%
- 1Y
- 4.85%
- 3Y*
- 4.96%
- 5Y*
- —
- 10Y*
- —
USIG
- 1D
- 0.12%
- 1M
- 0.78%
- YTD
- 0.83%
- 6M
- 0.89%
- 1Y
- 5.21%
- 3Y*
- 5.45%
- 5Y*
- 0.58%
- 10Y*
- 2.58%
FEIG vs. USIG - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | |
|---|---|---|---|---|---|---|
FEIG FlexShares ESG & Climate Investment Grade Corporate Core Index Fund | 0.68% | 7.31% | 1.75% | 8.57% | -15.91% | -1.54% |
USIG iShares Broad USD Investment Grade Corporate Bond ETF | 0.83% | 7.86% | 2.56% | 8.71% | -15.30% | -1.55% |
Correlation
The correlation between FEIG and USIG 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 (All Time) Calculated using the full available price history since Sep 21, 2021 | 0.98 |
The correlation between FEIG and USIG has been stable across timeframes, ranging from 0.97 to 0.98 - a consistent structural relationship.
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Return for Risk
FEIG vs. USIG — Risk / Return Rank
FEIG
USIG
FEIG vs. USIG - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for FlexShares ESG & Climate Investment Grade Corporate Core Index Fund (FEIG) and iShares Broad USD Investment Grade Corporate Bond ETF (USIG). 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.
| FEIG | USIG | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.17 | ||
| Sortino ratioReturn per unit of downside risk | -0.23 | ||
| Omega ratioGain probability vs. loss probability | 1.20 | 1.22 | -0.03 |
| Calmar ratioReturn relative to maximum drawdown | 1.74 | 1.87 | -0.14 |
| Martin ratioReturn relative to average drawdown | 5.15 | 5.95 | -0.79 |
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Drawdowns
FEIG vs. USIG - Drawdown Comparison
The maximum FEIG drawdown since its inception was -22.26%, roughly equal to the maximum USIG drawdown of -22.21%. Use the drawdown chart below to compare losses from any high point for FEIG and USIG.
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Drawdown Indicators
| FEIG | USIG | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -22.26% | -22.21% | -0.05% |
Max Drawdown (1Y)Largest decline over 1 year | -2.81% | -2.79% | -0.02% |
Max Drawdown (3Y)Largest decline over 3 years | -6.67% | -6.10% | -0.57% |
Max Drawdown (5Y)Largest decline over 5 years | — | -21.45% | — |
Max Drawdown (10Y)Largest decline over 10 years | — | -21.45% | — |
Current DrawdownCurrent decline from peak | -1.36% | -0.70% | -0.66% |
Average DrawdownAverage peak-to-trough decline | -9.42% | -3.41% | -6.01% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.94% | 0.88% | +0.06% |
Volatility
FEIG vs. USIG - Volatility Comparison
FlexShares ESG & Climate Investment Grade Corporate Core Index Fund (FEIG) has a higher volatility of 1.20% compared to iShares Broad USD Investment Grade Corporate Bond ETF (USIG) at 1.14%. This indicates that FEIG's price experiences larger fluctuations and is considered to be riskier than USIG based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| FEIG | USIG | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.20% | 1.14% | +0.06% |
Volatility (6M)Calculated over the trailing 6-month period | 3.35% | 3.12% | +0.23% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.39% | 4.10% | +0.29% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 7.37% | 6.82% | +0.55% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 7.37% | 6.83% | +0.54% |
FEIG vs. USIG - Expense Ratio Comparison
FEIG has a 0.12% expense ratio, which is higher than USIG'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
FEIG vs. USIG - Dividend Comparison
FEIG's dividend yield for the trailing twelve months is around 4.74%, which matches USIG's 4.73% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
FEIG FlexShares ESG & Climate Investment Grade Corporate Core Index Fund | 4.74% | 4.84% | 4.65% | 4.21% | 2.99% | 0.55% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
USIG iShares Broad USD Investment Grade Corporate Bond ETF | 4.73% | 4.62% | 4.51% | 3.94% | 3.14% | 2.33% | 2.82% | 3.37% | 3.44% | 3.03% | 2.87% | 3.24% |
Frequently Asked Questions
With a correlation of 0.97, FEIG and USIG 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.
FEIG has higher volatility (1.20%) compared to USIG (1.14%). In terms of maximum drawdown, FEIG dropped -22.26% vs USIG's -22.21%.
On 3-year performance, USIG leads with 5.45% vs 4.96% for FEIG. On fees, USIG is cheaper at 0.04% per year. Their volatility is very similar. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 3-year period, USIG has performed better with a 5.45% return vs 4.96%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
USIG is cheaper with a 0.04% expense ratio, compared with 0.12% for FEIG.
FEIG and USIG have nearly identical dividend yields, around 4.74%.
FEIG tracks Northern Trust ESG & Climate Investment Grade U.S. Corporate Core TR, while USIG tracks ICE BofA US Corporate. They also come from different issuers: FlexShares and iShares. Their fees differ too: 0.12% for FEIG and 0.04% for USIG.
USIG currently has the higher Sharpe Ratio (1.28 vs 1.11), 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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