TBF vs. SKOR
TBF (ProShares Short 20+ Year Treasury) and SKOR (FlexShares Credit-Scored US Corporate Bond Index Fund) are both exchange-traded funds - TBF is a Inverse Bonds fund tracking the U.S. Treasury 20+ Year Index (-100%), while SKOR is a Corporate Bonds fund tracking the NorthernTrustUS Corporate Bond Quality Value Index. Both are passively managed. Over the past 10 years, TBF returned 2.91%/yr vs 2.81%/yr for SKOR. At a correlation of -0.61, they often move in opposite directions. TBF charges 0.94%/yr vs 0.22%/yr for SKOR.
Performance
TBF vs. SKOR - Performance Comparison
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Returns By Period
In the year-to-date period, TBF achieves a 1.71% return, which is significantly higher than SKOR's 0.35% return. Both investments have delivered pretty close results over the past 10 years, with TBF having a 2.91% annualized return and SKOR not far behind at 2.81%.
TBF
- 1D
- 0.83%
- 1M
- -1.61%
- YTD
- 1.71%
- 6M
- 2.04%
- 1Y
- 1.36%
- 3Y*
- 8.00%
- 5Y*
- 10.44%
- 10Y*
- 2.91%
SKOR
- 1D
- -0.13%
- 1M
- 0.39%
- YTD
- 0.35%
- 6M
- 0.57%
- 1Y
- 4.66%
- 3Y*
- 5.95%
- 5Y*
- 1.77%
- 10Y*
- 2.81%
TBF vs. SKOR - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
TBF ProShares Short 20+ Year Treasury | 1.71% | 1.27% | 16.33% | 2.43% | 42.37% | 1.33% | -19.35% | -10.96% | 3.26% | -8.46% |
SKOR FlexShares Credit-Scored US Corporate Bond Index Fund | 0.35% | 7.99% | 4.42% | 7.64% | -9.88% | -1.40% | 8.84% | 10.69% | -1.25% | 4.38% |
Correlation
The correlation between TBF and SKOR is -0.80, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | -0.80 |
Correlation (3Y) Calculated over the trailing 3-year period | -0.81 |
Correlation (5Y) Calculated over the trailing 5-year period | -0.78 |
Correlation (10Y) Calculated over the trailing 10-year period | -0.65 |
Correlation (All Time) Calculated using the full available price history since Nov 13, 2014 | -0.61 |
The correlation between TBF and SKOR shifts across timeframes, from -0.81 (3 years) to -0.61 (all time), reflecting how their relationship changes across market environments.
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Return for Risk
TBF vs. SKOR — Risk / Return Rank
TBF
SKOR
TBF vs. SKOR - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for ProShares Short 20+ Year Treasury (TBF) and FlexShares Credit-Scored US Corporate Bond Index Fund (SKOR). 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.
| TBF | SKOR | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -1.57 | ||
| Sortino ratioReturn per unit of downside risk | -2.30 | ||
| Omega ratioGain probability vs. loss probability | 1.03 | 1.32 | -0.29 |
| Calmar ratioReturn relative to maximum drawdown | 0.19 | 2.24 | -2.05 |
| Martin ratioReturn relative to average drawdown | 0.41 | 7.73 | -7.32 |
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Drawdowns
TBF vs. SKOR - Drawdown Comparison
The maximum TBF drawdown since its inception was -70.40%, which is greater than SKOR's maximum drawdown of -15.98%. Use the drawdown chart below to compare losses from any high point for TBF and SKOR.
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Drawdown Indicators
| TBF | SKOR | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -70.40% | -15.98% | -54.42% |
Max Drawdown (1Y)Largest decline over 1 year | -7.23% | -2.09% | -5.14% |
Max Drawdown (3Y)Largest decline over 3 years | -17.79% | -3.11% | -14.68% |
Max Drawdown (5Y)Largest decline over 5 years | -17.79% | -15.13% | -2.66% |
Max Drawdown (10Y)Largest decline over 10 years | -38.39% | -15.98% | -22.41% |
Current DrawdownCurrent decline from peak | -43.76% | -0.76% | -43.00% |
Average DrawdownAverage peak-to-trough decline | -47.41% | -2.64% | -44.77% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.31% | 0.60% | +2.71% |
Volatility
TBF vs. SKOR - Volatility Comparison
ProShares Short 20+ Year Treasury (TBF) has a higher volatility of 2.22% compared to FlexShares Credit-Scored US Corporate Bond Index Fund (SKOR) at 0.83%. This indicates that TBF's price experiences larger fluctuations and is considered to be riskier than SKOR based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| TBF | SKOR | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 2.22% | 0.83% | +1.39% |
Volatility (6M)Calculated over the trailing 6-month period | 6.53% | 2.07% | +4.46% |
Volatility (1Y)Calculated over the trailing 1-year period | 9.31% | 2.72% | +6.59% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 15.68% | 4.43% | +11.25% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 14.52% | 4.91% | +9.61% |
TBF vs. SKOR - Expense Ratio Comparison
TBF has a 0.94% expense ratio, which is higher than SKOR's 0.22% expense ratio.
Dividends
TBF vs. SKOR - Dividend Comparison
TBF's dividend yield for the trailing twelve months is around 2.86%, less than SKOR's 4.67% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
SKOR FlexShares Credit-Scored US Corporate Bond Index Fund | 4.67% | 4.70% | 4.90% | 3.90% | 2.57% | 2.55% | 3.38% | 3.53% | 2.85% | 2.46% | 2.74% | 2.25% |
TBF ProShares Short 20+ Year Treasury | 2.86% | 3.39% | 4.06% | 4.99% | 0.36% | 0.00% | 0.22% | 1.68% | 0.88% | 0.00% | 0.00% | 0.00% |
Frequently Asked Questions
TBF and SKOR have a correlation of -0.80, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
TBF has higher volatility (2.22%) compared to SKOR (0.83%). In terms of maximum drawdown, TBF dropped -70.40% vs SKOR's -15.98%.
On 10-year performance, TBF leads with 2.91% vs 2.81% for SKOR. On fees, SKOR is cheaper at 0.22% per year. On volatility, SKOR has been the lower-risk option at 0.83%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 10-year period, TBF has performed better with a 2.91% return vs 2.81%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
SKOR is cheaper with a 0.22% expense ratio, compared with 0.94% for TBF.
SKOR has the higher dividend yield at 4.67%, compared with 2.86% for TBF.
TBF is categorized as Inverse Bonds, while SKOR is Corporate Bonds. TBF tracks U.S. Treasury 20+ Year Index (-100%), while SKOR tracks NorthernTrustUS Corporate Bond Quality Value Index. They also come from different issuers: ProShares and Northern Trust. Their fees differ too: 0.94% for TBF and 0.22% for SKOR.
SKOR currently has the higher Sharpe Ratio (1.72 vs 0.15), 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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