TRLVX vs. WFBIX
TRLVX (SEI Institutional Managed Trust Core Fixed Income Fund) and WFBIX (iShares U.S. Aggregate Bond Index Fund) are both Intermediate Core Bond funds from BlackRock. Over the past 10 years, TRLVX returned 1.53%/yr vs 1.94%/yr for WFBIX. Their correlation of 0.91 suggests significant overlap in exposure. TRLVX charges 0.66%/yr vs 0.05%/yr for WFBIX.
Performance
TRLVX vs. WFBIX - Performance Comparison
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Returns By Period
In the year-to-date period, TRLVX achieves a -0.05% return, which is significantly lower than WFBIX's 0.21% return. Over the past 10 years, TRLVX has underperformed WFBIX with an annualized return of 1.53%, while WFBIX has yielded a comparatively higher 1.94% annualized return.
TRLVX
- 1D
- -0.21%
- 1M
- 0.01%
- YTD
- -0.05%
- 6M
- 0.07%
- 1Y
- 4.13%
- 3Y*
- 3.70%
- 5Y*
- -0.61%
- 10Y*
- 1.53%
WFBIX
- 1D
- -0.22%
- 1M
- 0.11%
- YTD
- 0.21%
- 6M
- 0.32%
- 1Y
- 4.53%
- 3Y*
- 5.26%
- 5Y*
- 0.87%
- 10Y*
- 1.94%
TRLVX vs. WFBIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
TRLVX SEI Institutional Managed Trust Core Fixed Income Fund | -0.05% | 7.06% | 0.83% | 5.92% | -15.66% | -1.63% | 9.04% | 9.25% | -0.47% | 4.15% |
WFBIX iShares U.S. Aggregate Bond Index Fund | 0.21% | 7.16% | 1.43% | 9.65% | -13.03% | -1.79% | 7.40% | 8.72% | -0.08% | 3.39% |
Correlation
The correlation between TRLVX and WFBIX is 0.96 - 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 | 0.96 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.96 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.97 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.95 |
Correlation (All Time) Calculated using the full available price history since Jul 6, 1993 | 0.91 |
The correlation between TRLVX and WFBIX has been stable across timeframes, ranging from 0.91 to 0.97 - a consistent structural relationship.
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Return for Risk
TRLVX vs. WFBIX — Risk / Return Rank
TRLVX
WFBIX
TRLVX vs. WFBIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for SEI Institutional Managed Trust Core Fixed Income Fund (TRLVX) and iShares U.S. Aggregate Bond Index Fund (WFBIX). 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.
| TRLVX | WFBIX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.13 | ||
| Sortino ratioReturn per unit of downside risk | -0.20 | ||
| Omega ratioGain probability vs. loss probability | 1.20 | 1.23 | -0.03 |
| Calmar ratioReturn relative to maximum drawdown | 1.46 | 1.70 | -0.24 |
| Martin ratioReturn relative to average drawdown | 4.39 | 5.08 | -0.68 |
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
| TRLVX | WFBIX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.17 | 1.30 | -0.13 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | -0.10 | 0.14 | -0.23 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.29 | 0.38 | -0.08 |
Sharpe Ratio (All Time)Calculated using the full available price history | 1.02 | 0.94 | +0.08 |
Drawdowns
TRLVX vs. WFBIX - Drawdown Comparison
The maximum TRLVX drawdown since its inception was -20.98%, which is greater than WFBIX's maximum drawdown of -18.68%. Use the drawdown chart below to compare losses from any high point for TRLVX and WFBIX.
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Drawdown Indicators
| TRLVX | WFBIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -20.98% | -18.68% | -2.30% |
Max Drawdown (1Y)Largest decline over 1 year | -3.29% | -3.02% | -0.27% |
Max Drawdown (3Y)Largest decline over 3 years | -6.90% | -6.09% | -0.81% |
Max Drawdown (5Y)Largest decline over 5 years | -20.68% | -17.84% | -2.84% |
Max Drawdown (10Y)Largest decline over 10 years | -20.98% | -18.68% | -2.30% |
Current DrawdownCurrent decline from peak | -5.18% | -1.71% | -3.47% |
Average DrawdownAverage peak-to-trough decline | -2.48% | -2.26% | -0.22% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.09% | 1.01% | +0.08% |
Volatility
TRLVX vs. WFBIX - Volatility Comparison
SEI Institutional Managed Trust Core Fixed Income Fund (TRLVX) has a higher volatility of 1.41% compared to iShares U.S. Aggregate Bond Index Fund (WFBIX) at 1.31%. This indicates that TRLVX's price experiences larger fluctuations and is considered to be riskier than WFBIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| TRLVX | WFBIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.41% | 1.31% | +0.10% |
Volatility (6M)Calculated over the trailing 6-month period | 2.97% | 2.80% | +0.17% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.13% | 3.97% | +0.16% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.38% | 6.40% | -0.02% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.24% | 5.17% | +0.07% |
TRLVX vs. WFBIX - Expense Ratio Comparison
TRLVX has a 0.66% expense ratio, which is higher than WFBIX's 0.05% expense ratio.
Dividends
TRLVX vs. WFBIX - Dividend Comparison
TRLVX's dividend yield for the trailing twelve months is around 3.67%, less than WFBIX's 3.91% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
TRLVX SEI Institutional Managed Trust Core Fixed Income Fund | 3.67% | 3.52% | 4.01% | 3.38% | 1.80% | 1.90% | 5.98% | 3.73% | 2.77% | 2.36% | 4.46% | 3.64% |
WFBIX iShares U.S. Aggregate Bond Index Fund | 3.91% | 3.78% | 3.68% | 6.82% | 2.60% | 2.04% | 2.43% | 2.88% | 2.71% | 2.24% | 2.25% | 2.20% |
Frequently Asked Questions
With a correlation of 0.96, TRLVX and WFBIX 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.
TRLVX has higher volatility (1.41%) compared to WFBIX (1.31%). In terms of maximum drawdown, TRLVX dropped -20.98% vs WFBIX's -18.68%.
WFBIX currently has the higher Sharpe Ratio (1.30 vs 1.17), 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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