SEA vs. IDRV

Last updated Apr 1, 2026

Compare and contrast key facts about U.S. Global Sea to Sky Cargo ETF (SEA) and iShares Self-Driving EV and Tech ETF (IDRV).

SEA and IDRV are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. SEA is a passively managed fund by US Global that tracks the performance of the U.S. Global Sea to Sky Cargo Index - Benchmark TR Gross. It was launched on Jan 19, 2022. IDRV is a passively managed fund by iShares that tracks the performance of the NYSE FactSet Global Autonomous Driving and Electric Vehicle Index. It was launched on Apr 16, 2019. Both SEA and IDRV 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

SEA vs. IDRV - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in U.S. Global Sea to Sky Cargo ETF (SEA) and iShares Self-Driving EV and Tech ETF (IDRV). The values are adjusted to include any dividend payments, if applicable.

SEA vs. IDRV - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022
SEA U.S. Global Sea to Sky Cargo ETF	19.09%	16.78%	2.52%	19.33%	-17.28%
IDRV iShares Self-Driving EV and Tech ETF	1.59%	32.24%	-16.05%	7.83%	-32.87%

Returns By Period

In the year-to-date period, SEA achieves a 19.09% return, which is significantly higher than IDRV's 1.59% return.

SEA

• 1D: 2.77%
• 1M: -0.20%
• YTD: 19.09%
• 6M: 27.29%
• 1Y: 44.88%
• 3Y*: 16.19%
• 5Y*: —
• 10Y*: —

IDRV

• 1D: 3.81%
• 1M: -5.49%
• YTD: 1.59%
• 6M: 6.01%
• 1Y: 34.35%
• 3Y*: 2.36%
• 5Y*: -1.93%
• 10Y*: —

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

SEA vs. IDRV - Expense Ratio Comparison

SEA has a 0.60% expense ratio, which is higher than IDRV's 0.48% expense ratio.

SEA

U.S. Global Sea to Sky Cargo ETF

IDRV

iShares Self-Driving EV and Tech ETF

Return for Risk

SEA vs. IDRV — Risk / Return Rank

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

SEA

SEA Risk / Return Rank: 92
SEA Sharpe Ratio Rank: 93
SEA Sortino Ratio Rank: 94
SEA Omega Ratio Rank: 93
SEA Calmar Ratio Rank: 88
SEA Martin Ratio Rank: 93

IDRV

IDRV Risk / Return Rank: 74
IDRV Sharpe Ratio Rank: 73
IDRV Sortino Ratio Rank: 75
IDRV Omega Ratio Rank: 67
IDRV Calmar Ratio Rank: 78
IDRV Martin Ratio Rank: 76

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.

SEA vs. IDRV - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for U.S. Global Sea to Sky Cargo ETF (SEA) and iShares Self-Driving EV and Tech ETF (IDRV). 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.

	SEA	IDRV	Difference
Sharpe ratio Return per unit of total volatility	2.16	1.26	+0.90
Sortino ratio Return per unit of downside risk	2.86	1.86	+1.00
Omega ratio Gain probability vs. loss probability	1.41	1.24	+0.17
Calmar ratio Return relative to maximum drawdown	2.76	2.00	+0.76
Martin ratio Return relative to average drawdown	13.29	7.79	+5.50
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SEA vs. IDRV - Sharpe Ratio Comparison

The current SEA Sharpe Ratio is 2.16, which is higher than the IDRV Sharpe Ratio of 1.26. The chart below compares the historical Sharpe Ratios of SEA and IDRV, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	SEA	IDRV	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.16	1.26	+0.90
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	-0.07	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.39	0.28	+0.11

Correlation

The correlation between SEA and IDRV is 0.58, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

SEA vs. IDRV - Dividend Comparison

SEA's dividend yield for the trailing twelve months is around 5.67%, more than IDRV's 1.68% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019
SEA U.S. Global Sea to Sky Cargo ETF	5.67%	6.76%	18.47%	9.85%	18.73%	0.00%	0.00%	0.00%
IDRV iShares Self-Driving EV and Tech ETF	1.68%	1.70%	2.68%	2.17%	2.29%	1.12%	0.69%	1.29%

Drawdowns

SEA vs. IDRV - Drawdown Comparison

The maximum SEA drawdown since its inception was -39.53%, smaller than the maximum IDRV drawdown of -53.00%. Use the drawdown chart below to compare losses from any high point for SEA and IDRV.

Drawdown Indicators

	SEA	IDRV	Difference
Max Drawdown Largest peak-to-trough decline	-39.53%	-53.00%	+13.47%
Max Drawdown (1Y) Largest decline over 1 year	-16.06%	-16.33%	+0.27%
Max Drawdown (5Y) Largest decline over 5 years	—	-53.00%	—
Current Drawdown Current decline from peak	-2.48%	-25.25%	+22.77%
Average Drawdown Average peak-to-trough decline	-14.84%	-22.51%	+7.67%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.34%	4.20%	-0.86%

Volatility

SEA vs. IDRV - Volatility Comparison

The current volatility for U.S. Global Sea to Sky Cargo ETF (SEA) is 6.68%, while iShares Self-Driving EV and Tech ETF (IDRV) has a volatility of 11.58%. This indicates that SEA experiences smaller price fluctuations and is considered to be less risky than IDRV based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SEA	IDRV	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.68%	11.58%	-4.90%
Volatility (6M) Calculated over the trailing 6-month period	12.51%	18.45%	-5.94%
Volatility (1Y) Calculated over the trailing 1-year period	20.91%	27.45%	-6.54%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.87%	27.44%	-5.57%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.87%	28.10%	-6.23%