OPTT vs. IGM
OPTT (Ocean Power Technologies, Inc.) is a stock, while IGM (iShares Expanded Tech Sector ETF) is Technology Equities fund tracking the S&P North American Expanded Technology Sector Index. Over the past 10 years, OPTT returned -41.34%/yr vs 25.20%/yr for IGM. At a 0.24 correlation, their price movements are largely independent.
Performance
OPTT vs. IGM - Performance Comparison
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Returns By Period
In the year-to-date period, OPTT achieves a -17.67% return, which is significantly lower than IGM's 22.70% return. Over the past 10 years, OPTT has underperformed IGM with an annualized return of -41.34%, while IGM has yielded a comparatively higher 25.20% annualized return.
OPTT
- 1D
- -5.00%
- 1M
- -30.11%
- YTD
- -17.67%
- 6M
- -26.81%
- 1Y
- -49.77%
- 3Y*
- -26.00%
- 5Y*
- -37.31%
- 10Y*
- -41.34%
IGM
- 1D
- 0.74%
- 1M
- -1.63%
- YTD
- 22.70%
- 6M
- 20.79%
- 1Y
- 44.25%
- 3Y*
- 36.26%
- 5Y*
- 19.29%
- 10Y*
- 25.20%
OPTT vs. IGM - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
OPTT Ocean Power Technologies, Inc. | -17.67% | -70.59% | 222.78% | -29.79% | -69.59% | -44.98% | 209.20% | -87.21% | -69.08% | -62.71% |
IGM iShares Expanded Tech Sector ETF | 22.70% | 26.76% | 36.99% | 60.68% | -35.83% | 25.72% | 45.11% | 41.81% | 2.26% | 37.20% |
Correlation
The correlation between OPTT and IGM is 0.46, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.46 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.31 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.32 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.27 |
Correlation (All Time) Calculated using the full available price history since Apr 25, 2007 | 0.24 |
Over the past year, OPTT and IGM have become more correlated (0.46) than their long-term average of 0.24, meaning their price movements have been converging.
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Return for Risk
OPTT vs. IGM — Risk / Return Rank
OPTT
IGM
OPTT vs. IGM - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Ocean Power Technologies, Inc. (OPTT) and iShares Expanded Tech Sector ETF (IGM). 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.
| OPTT | IGM | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -2.44 | ||
| Sortino ratioReturn per unit of downside risk | -2.72 | ||
| Omega ratioGain probability vs. loss probability | 0.98 | 1.33 | -0.36 |
| Calmar ratioReturn relative to maximum drawdown | -0.71 | 2.70 | -3.41 |
| Martin ratioReturn relative to average drawdown | -1.05 | 8.95 | -10.00 |
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Drawdowns
OPTT vs. IGM - Drawdown Comparison
The maximum OPTT drawdown since its inception was -100.00%, which is greater than IGM's maximum drawdown of -65.59%. Use the drawdown chart below to compare losses from any high point for OPTT and IGM.
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Drawdown Indicators
| OPTT | IGM | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -100.00% | -65.59% | -34.41% |
Max Drawdown (1Y)Largest decline over 1 year | -70.60% | -16.44% | -54.16% |
Max Drawdown (3Y)Largest decline over 3 years | -84.66% | -26.39% | -58.27% |
Max Drawdown (5Y)Largest decline over 5 years | -95.71% | -40.68% | -55.03% |
Max Drawdown (10Y)Largest decline over 10 years | -99.95% | -40.68% | -59.27% |
Current DrawdownCurrent decline from peak | -99.99% | -7.35% | -92.64% |
Average DrawdownAverage peak-to-trough decline | -88.54% | -15.21% | -73.33% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 47.56% | 4.96% | +42.60% |
Volatility
OPTT vs. IGM - Volatility Comparison
Ocean Power Technologies, Inc. (OPTT) has a higher volatility of 36.35% compared to iShares Expanded Tech Sector ETF (IGM) at 11.27%. This indicates that OPTT's price experiences larger fluctuations and is considered to be riskier than IGM based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| OPTT | IGM | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 36.35% | 11.27% | +25.08% |
Volatility (6M)Calculated over the trailing 6-month period | 77.04% | 18.62% | +58.42% |
Volatility (1Y)Calculated over the trailing 1-year period | 104.48% | 22.70% | +81.78% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 122.02% | 26.07% | +95.95% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 127.51% | 24.70% | +102.81% |
Dividends
OPTT vs. IGM - Dividend Comparison
OPTT has not paid dividends to shareholders, while IGM's dividend yield for the trailing twelve months is around 0.14%.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
IGM iShares Expanded Tech Sector ETF | 0.14% | 0.17% | 0.22% | 0.33% | 0.66% | 0.16% | 0.32% | 0.50% | 0.57% | 0.57% | 0.90% | 0.79% |
OPTT Ocean Power Technologies, Inc. | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
Frequently Asked Questions
OPTT and IGM have a correlation of 0.46, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
OPTT has higher volatility (36.35%) compared to IGM (11.27%). In terms of maximum drawdown, OPTT dropped -100.00% vs IGM's -65.59%.
IGM currently has the higher Sharpe Ratio (1.96 vs -0.48), 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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