IGM vs. OPTT

Last updated Jun 13, 2026

IGM (iShares Expanded Tech Sector ETF) is Technology Equities fund tracking the S&P North American Expanded Technology Sector Index, while OPTT (Ocean Power Technologies, Inc.) is a stock. Over the past 10 years, IGM returned 24.57%/yr vs -42.55%/yr for OPTT. At a 0.24 correlation, their price movements are largely independent.

Performance

IGM vs. OPTT - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares Expanded Tech Sector ETF (IGM) and Ocean Power Technologies, Inc. (OPTT). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, IGM achieves a 23.42% return, which is significantly higher than OPTT's -8.60% return. Over the past 10 years, IGM has outperformed OPTT with an annualized return of 24.57%, while OPTT has yielded a comparatively lower -42.55% annualized return.

IGM

• 1D: 0.69%
• 1M: 3.04%
• YTD: 23.42%
• 6M: 23.24%
• 1Y: 48.57%
• 3Y*: 35.37%
• 5Y*: 20.09%
• 10Y*: 24.57%

OPTT

• 1D: -7.05%
• 1M: -19.42%
• YTD: -8.60%
• 6M: -35.10%
• 1Y: -49.32%
• 3Y*: -25.04%
• 5Y*: -36.18%
• 10Y*: -42.55%

*Multi-year figures are annualized to reflect compound growth (CAGR)

IGM vs. OPTT - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
IGM iShares Expanded Tech Sector ETF	23.42%	26.76%	36.99%	60.68%	-35.83%	25.72%	45.11%	41.81%	2.26%	37.20%
OPTT Ocean Power Technologies, Inc.	-8.60%	-70.59%	222.78%	-29.79%	-69.59%	-44.98%	209.20%	-87.21%	-69.08%	-62.71%

Correlation

The correlation between IGM and OPTT 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, IGM and OPTT have become more correlated (0.46) than their long-term average of 0.24, meaning their price movements have been converging.

Return for Risk

IGM vs. OPTT — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

IGM

IGM Risk / Return Rank: 71
IGM Sharpe Ratio Rank: 80
IGM Sortino Ratio Rank: 72
IGM Omega Ratio Rank: 73
IGM Calmar Ratio Rank: 68
IGM Martin Ratio Rank: 64

OPTT

OPTT Risk / Return Rank: 23
OPTT Sharpe Ratio Rank: 22
OPTT Sortino Ratio Rank: 28
OPTT Omega Ratio Rank: 28
OPTT Calmar Ratio Rank: 15
OPTT Martin Ratio Rank: 20

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

IGM vs. OPTT - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares Expanded Tech Sector ETF (IGM) and Ocean Power Technologies, Inc. (OPTT). 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.

	IGM	OPTT	Difference
Sharpe ratio: Return per unit of total volatility	2.22	-0.47	+2.69
Sortino ratio: Return per unit of downside risk	2.78	-0.19	+2.97
Omega ratio: Gain probability vs. loss probability	1.37	0.98	+0.39
Calmar ratio: Return relative to maximum drawdown	2.97	-0.73	+3.70
Martin ratio: Return relative to average drawdown	10.06	-1.07	+11.13

IGM vs. OPTT - Sharpe Ratio Comparison

The current IGM Sharpe Ratio is 2.22, which is higher than the OPTT Sharpe Ratio of -0.47. The chart below compares the historical Sharpe Ratios of IGM and OPTT, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

IGM vs. OPTT - Drawdown Comparison

The maximum IGM drawdown since its inception was -65.59%, smaller than the maximum OPTT drawdown of -100.00%. Use the drawdown chart below to compare losses from any high point for IGM and OPTT.

Drawdown Indicators

	IGM	OPTT	Difference
Max Drawdown Largest peak-to-trough decline	-65.59%	-100.00%	+34.41%
Max Drawdown (1Y) Largest decline over 1 year	-16.44%	-67.80%	+51.36%
Max Drawdown (3Y) Largest decline over 3 years	-26.39%	-83.20%	+56.81%
Max Drawdown (5Y) Largest decline over 5 years	-40.68%	-95.71%	+55.03%
Max Drawdown (10Y) Largest decline over 10 years	-40.68%	-99.95%	+59.27%
Current Drawdown Current decline from peak	-6.80%	-99.99%	+93.19%
Average Drawdown Average peak-to-trough decline	-15.22%	-88.52%	+73.30%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.84%	46.08%	-41.24%

Volatility

IGM vs. OPTT - Volatility Comparison

The current volatility for iShares Expanded Tech Sector ETF (IGM) is 10.03%, while Ocean Power Technologies, Inc. (OPTT) has a volatility of 36.85%. This indicates that IGM experiences smaller price fluctuations and is considered to be less risky than OPTT based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	IGM	OPTT	Difference
Volatility (1M) Calculated over the trailing 1-month period	10.03%	36.85%	-26.82%
Volatility (6M) Calculated over the trailing 6-month period	18.11%	85.09%	-66.98%
Volatility (1Y) Calculated over the trailing 1-year period	21.98%	104.79%	-82.81%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	25.91%	121.99%	-96.08%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	24.66%	127.48%	-102.82%

Dividends

IGM vs. OPTT - Dividend Comparison

IGM's dividend yield for the trailing twelve months is around 0.13%, while OPTT has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IGM iShares Expanded Tech Sector ETF	0.13%	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

Can I hold both IGM and OPTT in my portfolio?

IGM and OPTT 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.

Which is riskier, IGM or OPTT?

OPTT has higher volatility (36.85%) compared to IGM (10.03%). In terms of maximum drawdown, IGM dropped -65.59% vs OPTT's -100.00%.

Which has better risk-adjusted returns?

IGM currently has the higher Sharpe Ratio (2.22 vs -0.47), 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.