IAUM vs. MARB

Last updated Jun 5, 2026

IAUM (iShares Gold Trust Micro) and MARB (First Trust Merger Arbitrage ETF) are both exchange-traded funds - IAUM is a Gold fund tracking the LBMA Gold Price PM, while MARB is a Long-Short fund actively managed by First Trust. IAUM is passively managed, while MARB is actively managed. Over the past 3 years, IAUM returned 31.59%/yr vs 4.32%/yr for MARB. At a 0.01 correlation, their price movements are largely independent. IAUM charges 0.09%/yr vs 2.30%/yr for MARB.

Performance

IAUM vs. MARB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares Gold Trust Micro (IAUM) and First Trust Merger Arbitrage ETF (MARB). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, IAUM achieves a 3.84% return, which is significantly higher than MARB's 1.28% return.

IAUM

• 1D: 0.81%
• 1M: -1.65%
• YTD: 3.84%
• 6M: 6.39%
• 1Y: 32.66%
• 3Y*: 31.59%
• 5Y*: —
• 10Y*: —

MARB

• 1D: 0.02%
• 1M: 0.17%
• YTD: 1.28%
• 6M: 1.49%
• 1Y: 6.28%
• 3Y*: 4.32%
• 5Y*: 2.64%
• 10Y*: —

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

IAUM vs. MARB - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
IAUM iShares Gold Trust Micro	3.84%	64.27%	27.04%	13.12%	-0.49%	3.87%
MARB First Trust Merger Arbitrage ETF	1.28%	7.02%	0.73%	2.16%	3.89%	-0.37%

Correlation

The correlation between IAUM and MARB is -0.10, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	-0.10
Correlation (3Y) Calculated over the trailing 3-year period	0.02
Correlation (All Time) Calculated using the full available price history since Jun 30, 2021	0.01

The correlation between IAUM and MARB shifts across timeframes, from -0.10 (1 year) to 0.02 (3 years), reflecting how their relationship changes across market environments.

IAUM vs. MARB - Sectors Allocation Comparison

Sectors	IAUM	MARB
Real Estate	100.0%	20.0%
Basic Materials	-	-
Communication Services	-	15.2%
Consumer Cyclical	-	5.8%
Consumer Defensive	-	-
Energy	-	-
Financial Services	-	15.0%
Healthcare	-	29.7%
Industrials	-	9.1%
Technology	-	14.3%
Utilities	-	-

Return for Risk

IAUM vs. MARB — Risk / Return Rank

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

IAUM

IAUM Risk / Return Rank: 34
IAUM Sharpe Ratio Rank: 36
IAUM Sortino Ratio Rank: 32
IAUM Omega Ratio Rank: 39
IAUM Calmar Ratio Rank: 35
IAUM Martin Ratio Rank: 30

MARB

MARB Risk / Return Rank: 53
MARB Sharpe Ratio Rank: 34
MARB Sortino Ratio Rank: 36
MARB Omega Ratio Rank: 53
MARB Calmar Ratio Rank: 53
MARB Martin Ratio Rank: 91

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.

IAUM vs. MARB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares Gold Trust Micro (IAUM) and First Trust Merger Arbitrage ETF (MARB). 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.

	IAUM	MARB	Difference
Sharpe ratio: Return per unit of total volatility	1.25	1.19	+0.06
Sortino ratio: Return per unit of downside risk	1.64	1.83	-0.19
Omega ratio: Gain probability vs. loss probability	1.25	1.33	-0.08
Calmar ratio: Return relative to maximum drawdown	1.71	2.60	-0.88
Martin ratio: Return relative to average drawdown	4.21	21.32	-17.11
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

IAUM vs. MARB - Sharpe Ratio Comparison

The current IAUM Sharpe Ratio is 1.25, which is comparable to the MARB Sharpe Ratio of 1.19. The chart below compares the historical Sharpe Ratios of IAUM and MARB, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	IAUM	MARB	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.25	1.19	+0.06
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.62	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.17	0.36	+0.81

Drawdowns

IAUM vs. MARB - Drawdown Comparison

The maximum IAUM drawdown since its inception was -20.87%, which is greater than MARB's maximum drawdown of -11.99%. Use the drawdown chart below to compare losses from any high point for IAUM and MARB.

Drawdown Indicators

	IAUM	MARB	Difference
Max Drawdown Largest peak-to-trough decline	-20.87%	-11.99%	-8.88%
Max Drawdown (1Y) Largest decline over 1 year	-19.15%	-2.43%	-16.72%
Max Drawdown (3Y) Largest decline over 3 years	-19.15%	-3.67%	-15.48%
Max Drawdown (5Y) Largest decline over 5 years	—	-3.67%	—
Current Drawdown Current decline from peak	-17.01%	0.00%	-17.01%
Average Drawdown Average peak-to-trough decline	-5.31%	-1.40%	-3.91%
Ulcer Index Depth and duration of drawdowns from previous peaks	7.78%	0.30%	+7.48%

Volatility

IAUM vs. MARB - Volatility Comparison

iShares Gold Trust Micro (IAUM) has a higher volatility of 5.49% compared to First Trust Merger Arbitrage ETF (MARB) at 0.47%. This indicates that IAUM's price experiences larger fluctuations and is considered to be riskier than MARB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	IAUM	MARB	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.49%	0.47%	+5.02%
Volatility (6M) Calculated over the trailing 6-month period	22.90%	2.18%	+20.72%
Volatility (1Y) Calculated over the trailing 1-year period	26.30%	5.30%	+21.00%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.86%	4.26%	+13.60%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.86%	5.60%	+12.26%

IAUM vs. MARB - Expense Ratio Comparison

IAUM has a 0.09% expense ratio, which is lower than MARB's 2.30% expense ratio.

Dividends

IAUM vs. MARB - Dividend Comparison

IAUM has not paid dividends to shareholders, while MARB's dividend yield for the trailing twelve months is around 2.98%.

Position	TTM	2025	2024	2023	2022
IAUM iShares Gold Trust Micro	0.00%	0.00%	0.00%	0.00%	0.00%
MARB First Trust Merger Arbitrage ETF	2.98%	3.01%	2.11%	2.20%	0.99%

Frequently Asked Questions

Can I hold both IAUM and MARB in my portfolio?

IAUM and MARB have a correlation of -0.10, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, IAUM or MARB?

IAUM has higher volatility (5.49%) compared to MARB (0.47%). In terms of maximum drawdown, IAUM dropped -20.87% vs MARB's -11.99%.

Which ETF is better, IAUM or MARB?

On 3-year performance, IAUM leads with 31.59% vs 4.32% for MARB. On fees, IAUM is cheaper at 0.09% per year. On volatility, MARB has been the lower-risk option at 0.47%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, IAUM or MARB?

Over the 3-year period, IAUM has performed better with a 31.59% return vs 4.32%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, IAUM or MARB?

IAUM is cheaper with a 0.09% expense ratio, compared with 2.30% for MARB.

Which ETF pays a higher dividend yield, IAUM or MARB?

MARB has the higher dividend yield at 2.98%, compared with 0.00% for IAUM.

What is the main difference between IAUM and MARB?

IAUM is categorized as Gold, while MARB is Long-Short. They also come from different issuers: iShares and First Trust. Their fees differ too: 0.09% for IAUM and 2.30% for MARB.

Which has better risk-adjusted returns?

IAUM currently has the higher Sharpe Ratio (1.25 vs 1.19), 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.