SKOR vs. IGSB
SKOR (FlexShares Credit-Scored US Corporate Bond Index Fund) and IGSB (iShares 1-5 Year Investment Grade Corporate Bond ETF) are both Corporate Bonds funds - SKOR tracks the NorthernTrustUS Corporate Bond Quality Value Index while IGSB tracks the ICE BofA 1-5 Year US Corporate Index. Both are passively managed. Over the past 10 years, SKOR returned 2.73%/yr vs 2.70%/yr for IGSB. Their 0.73 correlation means they have sometimes moved together and sometimes differently. SKOR charges 0.22%/yr vs 0.04%/yr for IGSB.
Performance
SKOR vs. IGSB - Performance Comparison
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Returns By Period
In the year-to-date period, SKOR achieves a 0.01% return, which is significantly lower than IGSB's 0.91% return. Both investments have delivered pretty close results over the past 10 years, with SKOR having a 2.73% annualized return and IGSB not far behind at 2.70%.
SKOR
- 1D
- -0.11%
- 1M
- -0.79%
- 6M
- -0.26%
- YTD
- 0.01%
- 1Y
- 2.60%
- 3Y*
- 5.67%
- 5Y*
- 1.51%
- 10Y*
- 2.73%
- ALL TIME*
- 2.96%
IGSB
- 1D
- -0.04%
- 1M
- -0.17%
- 6M
- 0.47%
- YTD
- 0.91%
- 1Y
- 3.16%
- 3Y*
- 5.60%
- 5Y*
- 2.41%
- 10Y*
- 2.70%
- ALL TIME*
- 2.82%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $137.50M | $132.28M | $161.41M | |
| $2.39M | $2.88M | $3.03M |
SKOR vs. IGSB - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
SKOR FlexShares Credit-Scored US Corporate Bond Index Fund | 0.01% | 7.99% | 4.42% | 7.64% | -9.88% | -1.40% | 8.84% | 10.69% | -1.25% | 4.38% |
IGSB iShares 1-5 Year Investment Grade Corporate Bond ETF | 0.91% | 6.96% | 4.97% | 6.40% | -5.63% | -0.56% | 5.37% | 7.11% | 1.25% | 1.27% |
Correlation
The correlation between SKOR and IGSB is 0.94, meaning they have usually moved in the same direction, including during past declines.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.94 |
Correlation (3Y) Balances recent behavior with more history. | 0.95 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.94 |
Correlation (10Y) Provides a long-term view across more market conditions. | 0.79 |
Correlation (All Time) Calculated using the full available price history since Nov 13, 2014 | 0.73 |
Over the past year, SKOR and IGSB have become more correlated (0.94) than their long-term average of 0.73, meaning their price movements have been converging.
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Return for Risk
SKOR vs. IGSB — Risk / Return Rank
SKOR
IGSB
SKOR vs. IGSB - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for FlexShares Credit-Scored US Corporate Bond Index Fund (SKOR) and iShares 1-5 Year Investment Grade Corporate Bond ETF (IGSB). 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.
| SKOR | IGSB | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.71 | ||
| Sortino ratioReturn per unit of downside risk | -1.13 | ||
| Omega ratioGain probability vs. loss probability | 1.21 | 1.37 | -0.16 |
| Calmar ratioReturn relative to maximum drawdown | 1.56 | 2.56 | -1.00 |
| Martin ratioReturn relative to average drawdown | 4.98 | 10.07 | -5.09 |
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Drawdowns
SKOR vs. IGSB - Drawdown Comparison
The maximum SKOR drawdown since its inception was -15.98%, which is greater than IGSB's maximum drawdown of -13.38%. Use the drawdown chart below to compare losses from any high point for SKOR and IGSB.
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Drawdown Indicators
| SKOR | IGSB | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -15.98% | -13.38% | -2.60% |
Max Drawdown (1Y)Largest decline over 1 year | -2.09% | -1.46% | -0.63% |
Max Drawdown (3Y)Largest decline over 3 years | -2.98% | -1.46% | -1.52% |
Max Drawdown (5Y)Largest decline over 5 years | -15.07% | -9.41% | -5.66% |
Max Drawdown (10Y)Largest decline over 10 years | -15.98% | -13.38% | -2.60% |
Current DrawdownCurrent decline from peak | -1.10% | -0.23% | -0.87% |
Average DrawdownAverage peak-to-trough decline | -2.63% | -0.85% | -1.78% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.65% | 0.37% | +0.28% |
Volatility
SKOR vs. IGSB - Volatility Comparison
FlexShares Credit-Scored US Corporate Bond Index Fund (SKOR) has a higher volatility of 0.73% compared to iShares 1-5 Year Investment Grade Corporate Bond ETF (IGSB) at 0.51%. This indicates that SKOR's price experiences larger fluctuations and is considered to be riskier than IGSB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| SKOR | IGSB | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.73% | 0.51% | +0.22% |
Volatility (6M)Calculated over the trailing 6-month period | 2.15% | 1.57% | +0.58% |
Volatility (1Y)Calculated over the trailing 1-year period | 2.71% | 1.95% | +0.76% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 4.43% | 2.95% | +1.48% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.90% | 3.47% | +1.43% |
SKOR vs. IGSB - Expense Ratio Comparison
SKOR has a 0.22% expense ratio, which is higher than IGSB'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
SKOR vs. IGSB - Dividend Comparison
SKOR's dividend yield for the trailing twelve months is around 4.71%, more than IGSB's 4.60% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
IGSB iShares 1-5 Year Investment Grade Corporate Bond ETF | 4.23% | 4.44% | 4.02% | 3.26% | 2.07% | 1.82% | 2.36% | 3.06% | 2.46% | 1.65% | 1.45% | 1.18% |
SKOR FlexShares Credit-Scored US Corporate Bond Index Fund | 4.30% | 4.70% | 4.90% | 3.90% | 2.57% | 2.55% | 3.38% | 3.53% | 2.85% | 2.46% | 2.74% | 2.25% |
Frequently Asked Questions
With a correlation of 0.94, SKOR and IGSB 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.
SKOR has higher volatility (0.73%) compared to IGSB (0.51%). In terms of maximum drawdown, SKOR dropped -15.98% vs IGSB's -13.38%.
On 10-year performance, SKOR leads with 2.73% vs 2.70% for IGSB. On fees, IGSB is cheaper at 0.04% per year. On volatility, IGSB has been the lower-risk option at 0.51%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 10-year period, SKOR has performed better with a 2.73% return vs 2.70%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
IGSB is cheaper with a 0.04% expense ratio, compared with 0.22% for SKOR.
SKOR has the higher dividend yield at 4.30%, compared with 4.23% for IGSB.
SKOR tracks NorthernTrustUS Corporate Bond Quality Value Index, while IGSB tracks ICE BofA 1-5 Year US Corporate Index. They also come from different issuers: Northern Trust and iShares. Their fees differ too: 0.22% for SKOR and 0.04% for IGSB.
IGSB currently has the higher Sharpe Ratio (1.91 vs 1.20), 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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