SKF vs. SPY
Compare and contrast key facts about ProShares UltraShort Financials (SKF) and State Street SPDR S&P 500 ETF (SPY).
SKF and SPY are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. SKF is a passively managed fund by ProShares that tracks the performance of the DJ Global United States (All) / Financials -IND (-200%). It was launched on Jan 30, 2007. SPY is a passively managed fund by State Street that tracks the performance of the S&P 500 Index. It was launched on Jan 22, 1993. Both SKF and SPY are passive ETFs, meaning that they are not actively managed but aim to replicate the performance of the underlying index as closely as possible.
Performance
SKF vs. SPY - Performance Comparison
Loading graphics...
SKF vs. SPY - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
SKF ProShares UltraShort Financials | 21.68% | -23.99% | -36.29% | -21.78% | 17.63% | -47.66% | -42.40% | -42.97% | 16.42% | -31.70% |
SPY State Street SPDR S&P 500 ETF | -4.37% | 17.72% | 24.89% | 26.18% | -18.18% | 28.73% | 18.33% | 31.22% | -4.57% | 21.71% |
Returns By Period
In the year-to-date period, SKF achieves a 21.68% return, which is significantly higher than SPY's -4.37% return. Over the past 10 years, SKF has underperformed SPY with an annualized return of -26.15%, while SPY has yielded a comparatively higher 13.98% annualized return.
SKF
- 1D
- -4.38%
- 1M
- 7.51%
- YTD
- 21.68%
- 6M
- 18.48%
- 1Y
- -1.58%
- 3Y*
- -23.90%
- 5Y*
- -17.65%
- 10Y*
- -26.15%
SPY
- 1D
- 2.91%
- 1M
- -4.94%
- YTD
- -4.37%
- 6M
- -1.82%
- 1Y
- 17.59%
- 3Y*
- 18.19%
- 5Y*
- 11.69%
- 10Y*
- 13.98%
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
SKF vs. SPY - Expense Ratio Comparison
SKF has a 0.95% expense ratio, which is higher than SPY's 0.09% expense ratio.
Return for Risk
SKF vs. SPY — Risk / Return Rank
SKF
SPY
SKF vs. SPY - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for ProShares UltraShort Financials (SKF) and State Street SPDR S&P 500 ETF (SPY). 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.
| SKF | SPY | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | -0.04 | 0.93 | -0.97 |
Sortino ratioReturn per unit of downside risk | 0.23 | 1.45 | -1.22 |
Omega ratioGain probability vs. loss probability | 1.03 | 1.22 | -0.20 |
Calmar ratioReturn relative to maximum drawdown | -0.11 | 1.53 | -1.64 |
Martin ratioReturn relative to average drawdown | -0.15 | 7.30 | -7.45 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
Loading graphics...
Sharpe Ratios by Period
| SKF | SPY | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | -0.04 | 0.93 | -0.97 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | -0.49 | 0.69 | -1.18 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | -0.64 | 0.78 | -1.42 |
Sharpe Ratio (All Time)Calculated using the full available price history | -0.50 | 0.56 | -1.07 |
Correlation
The correlation between SKF and SPY is -0.84. This indicates that the assets' prices tend to move in opposite directions. Negative correlation can be particularly beneficial for diversification and risk management, as one asset may offset the losses of the other during market fluctuations.
Dividends
SKF vs. SPY - Dividend Comparison
SKF's dividend yield for the trailing twelve months is around 3.89%, more than SPY's 1.14% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
SKF ProShares UltraShort Financials | 3.89% | 5.61% | 7.94% | 3.93% | 0.03% | 0.00% | 0.11% | 1.29% | 0.06% | 0.00% | 0.00% | 0.00% |
SPY State Street SPDR S&P 500 ETF | 1.14% | 1.07% | 1.21% | 1.40% | 1.65% | 1.20% | 1.52% | 1.75% | 2.04% | 1.80% | 2.03% | 2.06% |
Drawdowns
SKF vs. SPY - Drawdown Comparison
The maximum SKF drawdown since its inception was -99.96%, which is greater than SPY's maximum drawdown of -55.19%. Use the drawdown chart below to compare losses from any high point for SKF and SPY.
Loading graphics...
Drawdown Indicators
| SKF | SPY | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -99.96% | -55.19% | -44.77% |
Max Drawdown (1Y)Largest decline over 1 year | -39.47% | -12.05% | -27.42% |
Max Drawdown (5Y)Largest decline over 5 years | -72.40% | -24.50% | -47.90% |
Max Drawdown (10Y)Largest decline over 10 years | -96.51% | -33.72% | -62.79% |
Current DrawdownCurrent decline from peak | -99.95% | -6.24% | -93.71% |
Average DrawdownAverage peak-to-trough decline | -89.16% | -9.09% | -80.07% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 29.24% | 2.52% | +26.72% |
Volatility
SKF vs. SPY - Volatility Comparison
ProShares UltraShort Financials (SKF) has a higher volatility of 9.64% compared to State Street SPDR S&P 500 ETF (SPY) at 5.31%. This indicates that SKF's price experiences larger fluctuations and is considered to be riskier than SPY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
Loading graphics...
Volatility by Period
| SKF | SPY | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 9.64% | 5.31% | +4.33% |
Volatility (6M)Calculated over the trailing 6-month period | 22.75% | 9.47% | +13.28% |
Volatility (1Y)Calculated over the trailing 1-year period | 38.69% | 19.05% | +19.64% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 36.06% | 17.06% | +19.00% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 40.94% | 17.92% | +23.02% |