MRGR vs. OPER
MRGR (Proshares Merger ETF) and OPER (ClearShares Ultra-Short Maturity ETF) are both exchange-traded funds - MRGR is a Hedge Fund fund tracking the S&P Merger Arbitrage Index, while OPER is a Ultrashort Bond fund tracking the ICE BofA U.S. Broad Market Index. Both are passively managed. Over the past 5 years, MRGR returned 3.99%/yr vs 3.65%/yr for OPER. At a 0.03 correlation, their price movements are largely independent. MRGR charges 0.75%/yr vs 0.20%/yr for OPER.
Performance
MRGR vs. OPER - Performance Comparison
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Returns By Period
In the year-to-date period, MRGR achieves a 1.83% return, which is significantly higher than OPER's 1.55% return.
MRGR
- 1D
- -0.33%
- 1M
- 0.80%
- YTD
- 1.83%
- 6M
- 1.48%
- 1Y
- 11.14%
- 3Y*
- 8.65%
- 5Y*
- 3.99%
- 10Y*
- 3.47%
OPER
- 1D
- 0.01%
- 1M
- 0.34%
- YTD
- 1.55%
- 6M
- 1.88%
- 1Y
- 4.07%
- 3Y*
- 4.80%
- 5Y*
- 3.65%
- 10Y*
- —
MRGR vs. OPER - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | |
|---|---|---|---|---|---|---|---|---|---|
MRGR Proshares Merger ETF | 1.83% | 11.99% | 5.32% | 4.94% | -4.81% | 6.58% | 1.99% | 4.31% | 3.73% |
OPER ClearShares Ultra-Short Maturity ETF | 1.55% | 4.37% | 5.34% | 5.09% | 1.76% | 0.37% | 0.65% | 2.15% | 0.90% |
Correlation
The correlation between MRGR and OPER is -0.06, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | -0.06 |
Correlation (3Y) Calculated over the trailing 3-year period | -0.00 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.04 |
Correlation (All Time) Calculated using the full available price history since Jul 12, 2018 | 0.03 |
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Return for Risk
MRGR vs. OPER — Risk / Return Rank
MRGR
OPER
MRGR vs. OPER - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Proshares Merger ETF (MRGR) and ClearShares Ultra-Short Maturity ETF (OPER). 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.
| MRGR | OPER | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -12.73 | ||
| Sortino ratioReturn per unit of downside risk | -39.27 | ||
| Omega ratioGain probability vs. loss probability | 1.56 | 13.38 | -11.82 |
| Calmar ratioReturn relative to maximum drawdown | 8.65 | 61.29 | -52.64 |
| Martin ratioReturn relative to average drawdown | 23.71 | 519.55 | -495.84 |
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
| MRGR | OPER | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 2.72 | 15.45 | -12.73 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 1.05 | 11.47 | -10.43 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.68 | — | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.36 | 2.28 | -1.92 |
Drawdowns
MRGR vs. OPER - Drawdown Comparison
The maximum MRGR drawdown since its inception was -13.23%, which is greater than OPER's maximum drawdown of -2.33%. Use the drawdown chart below to compare losses from any high point for MRGR and OPER.
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Drawdown Indicators
| MRGR | OPER | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -13.23% | -2.33% | -10.90% |
Max Drawdown (1Y)Largest decline over 1 year | -1.29% | -0.07% | -1.22% |
Max Drawdown (3Y)Largest decline over 3 years | -2.10% | -0.11% | -1.99% |
Max Drawdown (5Y)Largest decline over 5 years | -8.40% | -0.13% | -8.27% |
Max Drawdown (10Y)Largest decline over 10 years | -13.23% | — | — |
Current DrawdownCurrent decline from peak | -0.33% | 0.00% | -0.33% |
Average DrawdownAverage peak-to-trough decline | -3.86% | -0.16% | -3.70% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.47% | 0.01% | +0.46% |
Volatility
MRGR vs. OPER - Volatility Comparison
Proshares Merger ETF (MRGR) has a higher volatility of 1.08% compared to ClearShares Ultra-Short Maturity ETF (OPER) at 0.10%. This indicates that MRGR's price experiences larger fluctuations and is considered to be riskier than OPER based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| MRGR | OPER | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.08% | 0.10% | +0.98% |
Volatility (6M)Calculated over the trailing 6-month period | 2.95% | 0.20% | +2.75% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.11% | 0.26% | +3.85% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 3.82% | 0.32% | +3.50% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.15% | 1.23% | +3.92% |
MRGR vs. OPER - Expense Ratio Comparison
MRGR has a 0.75% expense ratio, which is higher than OPER's 0.20% expense ratio.
Dividends
MRGR vs. OPER - Dividend Comparison
MRGR's dividend yield for the trailing twelve months is around 2.97%, less than OPER's 4.09% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
MRGR Proshares Merger ETF | 2.97% | 3.12% | 3.21% | 2.11% | 0.61% | 0.59% | 0.00% | 0.78% | 1.39% | 0.36% | 0.74% | 0.34% |
OPER ClearShares Ultra-Short Maturity ETF | 4.09% | 4.32% | 5.21% | 5.03% | 1.71% | 0.36% | 0.64% | 2.08% | 0.89% | 0.00% | 0.00% | 0.00% |
Frequently Asked Questions
MRGR and OPER have a correlation of -0.06, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
MRGR has higher volatility (1.08%) compared to OPER (0.10%). In terms of maximum drawdown, MRGR dropped -13.23% vs OPER's -2.33%.
On 5-year performance, MRGR leads with 3.99% vs 3.65% for OPER. On fees, OPER is cheaper at 0.20% per year. On volatility, OPER has been the lower-risk option at 0.10%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 5-year period, MRGR has performed better with a 3.99% return vs 3.65%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
OPER is cheaper with a 0.20% expense ratio, compared with 0.75% for MRGR.
OPER has the higher dividend yield at 4.09%, compared with 2.97% for MRGR.
MRGR is categorized as Hedge Fund, while OPER is Ultrashort Bond. MRGR tracks S&P Merger Arbitrage Index, while OPER tracks ICE BofA U.S. Broad Market Index. They also come from different issuers: ProShares and ClearShares. Their fees differ too: 0.75% for MRGR and 0.20% for OPER.
OPER currently has the higher Sharpe Ratio (15.45 vs 2.72), 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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