IOO vs. COPY

Last updated Aug 6, 2026

IOO (iShares Global 100 ETF) and COPY (Tweedy, Browne Insider + Value ETF) are both Global Equities funds. IOO is passively managed, while COPY is actively managed. Over the past year, IOO returned 32.04% vs 35.43% for COPY. Their 0.64 correlation means they have sometimes moved together and sometimes differently. IOO charges 0.40%/yr vs 0.80%/yr for COPY.

Performance

IOO vs. COPY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares Global 100 ETF (IOO) and Tweedy, Browne Insider + Value ETF (COPY). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, IOO achieves a 15.22% return, which is significantly lower than COPY's 22.09% return.

IOO

• 1D: -0.11%
• 1M: 4.66%
• 6M: 13.73%
• YTD: 15.22%
• 1Y: 32.04%
• 3Y*: 25.42%
• 5Y*: 16.21%
• 10Y*: 16.57%
• ALL TIME*: 7.78%

COPY

• 1D: -0.69%
• 1M: 4.58%
• 6M: 12.42%
• YTD: 22.09%
• 1Y: 35.43%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 33.10%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
COPY Tweedy, Browne Insider + Value ETF	$3.27M	$2.45M	$2.05M
IOO iShares Global 100 ETF	$59.47M	$42.95M	$39.23M

IOO vs. COPY - Yearly Performance Comparison

	2026 (YTD)	2025	2024
IOO iShares Global 100 ETF	15.22%	27.02%	-2.59%
COPY Tweedy, Browne Insider + Value ETF	22.09%	29.52%	0.05%

Correlation

The correlation between IOO and COPY is 0.60, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.60
Correlation (All Time) Calculated using the full available price history since Dec 27, 2024	0.64

The correlation between IOO and COPY has been stable across timeframes, ranging from 0.60 to 0.64 - a consistent structural relationship.

Return for Risk

IOO vs. COPY — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

IOO

IOO Risk / Return Rank: 82
IOO Sharpe Ratio Rank: 85
IOO Sortino Ratio Rank: 83
IOO Omega Ratio Rank: 81
IOO Calmar Ratio Rank: 80
IOO Martin Ratio Rank: 81

COPY

COPY Risk / Return Rank: 92
COPY Sharpe Ratio Rank: 93
COPY Sortino Ratio Rank: 94
COPY Omega Ratio Rank: 92
COPY Calmar Ratio Rank: 88
COPY Martin Ratio Rank: 91

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

IOO vs. COPY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares Global 100 ETF (IOO) and Tweedy, Browne Insider + Value ETF (COPY). 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.

	IOO	COPY	Difference
Sharpe ratio: Return per unit of total volatility	2.20	2.70	-0.50
Sortino ratio: Return per unit of downside risk	3.01	3.89	-0.88
Omega ratio: Gain probability vs. loss probability	1.38	1.48	-0.10
Calmar ratio: Return relative to maximum drawdown	3.24	3.93	-0.69
Martin ratio: Return relative to average drawdown	12.09	16.08	-3.99

IOO vs. COPY - Sharpe Ratio Comparison

The current IOO Sharpe Ratio is 2.20, which is comparable to the COPY Sharpe Ratio of 2.70. The chart below compares the historical Sharpe Ratios of IOO and COPY, 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

IOO vs. COPY - Drawdown Comparison

The maximum IOO drawdown since its inception was -55.85%, which is greater than COPY's maximum drawdown of -14.05%. Use the drawdown chart below to compare losses from any high point for IOO and COPY.

Drawdown Indicators

	IOO	COPY	Difference
Max Drawdown Largest peak-to-trough decline	-55.85%	-14.05%	-41.80%
Max Drawdown (1Y) Largest decline over 1 year	-9.94%	-9.07%	-0.87%
Max Drawdown (3Y) Largest decline over 3 years	-19.19%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-23.52%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-31.43%	—	—
Current Drawdown Current decline from peak	-0.11%	-0.69%	+0.58%
Average Drawdown Average peak-to-trough decline	-11.22%	-1.48%	-9.74%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.66%	2.21%	+0.45%

Volatility

IOO vs. COPY - Volatility Comparison

iShares Global 100 ETF (IOO) has a higher volatility of 4.51% compared to Tweedy, Browne Insider + Value ETF (COPY) at 3.92%. This indicates that IOO's price experiences larger fluctuations and is considered to be riskier than COPY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	IOO	COPY	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.51%	3.92%	+0.59%
Volatility (6M) Calculated over the trailing 6-month period	11.92%	10.24%	+1.68%
Volatility (1Y) Calculated over the trailing 1-year period	14.64%	13.18%	+1.46%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.23%	16.93%	+0.30%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.74%	16.93%	+0.81%

IOO vs. COPY - Expense Ratio Comparison

IOO has a 0.40% expense ratio, which is lower than COPY's 0.80% expense ratio.

Dividends

IOO vs. COPY - Dividend Comparison

IOO's dividend yield for the trailing twelve months is around 0.80%, more than COPY's 0.78% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
COPY Tweedy, Browne Insider + Value ETF	0.78%	0.95%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
IOO iShares Global 100 ETF	0.80%	0.92%	1.08%	1.49%	2.00%	1.53%	1.49%	2.02%	2.54%	2.23%	2.75%	2.89%

Frequently Asked Questions

Can I hold both IOO and COPY in my portfolio?

IOO and COPY have a correlation of 0.60, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, IOO or COPY?

IOO has higher volatility (4.51%) compared to COPY (3.92%). In terms of maximum drawdown, IOO dropped -55.85% vs COPY's -14.05%.

Which ETF is better, IOO or COPY?

On 1-year performance, COPY leads with 35.43% vs 32.04% for IOO. On fees, IOO is cheaper at 0.40% per year. On volatility, COPY has been the lower-risk option at 3.92%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, IOO or COPY?

Over the 1-year period, COPY has performed better with a 35.43% return vs 32.04%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, IOO or COPY?

IOO is cheaper with a 0.40% expense ratio, compared with 0.80% for COPY.

Which ETF pays a higher dividend yield, IOO or COPY?

IOO has the higher dividend yield at 0.80%, compared with 0.78% for COPY.

What is the main difference between IOO and COPY?

They also come from different issuers: iShares and Tweedy, Browne. Their fees differ too: 0.40% for IOO and 0.80% for COPY.

Which has better risk-adjusted returns?

COPY currently has the higher Sharpe Ratio (2.70 vs 2.20), 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.