ISMF vs. WEEK

Last updated Jun 3, 2026

ISMF (iShares Managed Futures Active ETF) and WEEK (Roundhill Weekly T-Bill ETF) are both exchange-traded funds - ISMF is a Systematic Trend fund actively managed by iShares, while WEEK is a Ultrashort Bond fund actively managed by Roundhill. Both are actively managed. Over the past year, ISMF returned 21.28% vs 3.80% for WEEK. At a correlation of -0.20, they often move in opposite directions. ISMF charges 0.80%/yr vs 0.19%/yr for WEEK.

Performance

ISMF vs. WEEK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares Managed Futures Active ETF (ISMF) and Roundhill Weekly T-Bill ETF (WEEK). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ISMF achieves a 7.48% return, which is significantly higher than WEEK's 1.42% return.

ISMF

• 1D: 0.12%
• 1M: 0.89%
• YTD: 7.48%
• 6M: 10.36%
• 1Y: 21.28%
• 3Y*: —
• 5Y*: —
• 10Y*: —

WEEK

• 1D: 0.04%
• 1M: 0.29%
• YTD: 1.42%
• 6M: 1.73%
• 1Y: 3.80%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

ISMF vs. WEEK - Yearly Performance Comparison

	2026 (YTD)	2025
ISMF iShares Managed Futures Active ETF	7.48%	11.58%
WEEK Roundhill Weekly T-Bill ETF	1.42%	3.30%

Correlation

The correlation between ISMF and WEEK is -0.20, 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	-0.20
Correlation (All Time) Calculated using the full available price history since Mar 14, 2025	-0.20

Return for Risk

ISMF vs. WEEK — Risk / Return Rank

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

ISMF

ISMF Risk / Return Rank: 86
ISMF Sharpe Ratio Rank: 82
ISMF Sortino Ratio Rank: 81
ISMF Omega Ratio Rank: 89
ISMF Calmar Ratio Rank: 89
ISMF Martin Ratio Rank: 87

WEEK

WEEK Risk / Return Rank: 99
WEEK Sharpe Ratio Rank: 99
WEEK Sortino Ratio Rank: 99
WEEK Omega Ratio Rank: 99
WEEK Calmar Ratio Rank: 99
WEEK Martin Ratio Rank: 99

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.

ISMF vs. WEEK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares Managed Futures Active ETF (ISMF) and Roundhill Weekly T-Bill ETF (WEEK). 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.

	ISMF	WEEK	Difference
Sharpe ratio Return per unit of total volatility	2.71	9.27	-6.55
Sortino ratio Return per unit of downside risk	3.69	19.09	-15.40
Omega ratio Gain probability vs. loss probability	1.57	4.64	-3.07
Calmar ratio Return relative to maximum drawdown	5.46	29.45	-23.98
Martin ratio Return relative to average drawdown	18.89	263.98	-245.10
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ISMF vs. WEEK - Sharpe Ratio Comparison

The current ISMF Sharpe Ratio is 2.71, which is lower than the WEEK Sharpe Ratio of 9.27. The chart below compares the historical Sharpe Ratios of ISMF and WEEK, 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

	ISMF	WEEK	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.71	9.27	-6.55
Sharpe Ratio (All Time) Calculated using the full available price history	2.08	10.02	-7.94

Drawdowns

ISMF vs. WEEK - Drawdown Comparison

The maximum ISMF drawdown since its inception was -4.23%, which is greater than WEEK's maximum drawdown of -0.13%. Use the drawdown chart below to compare losses from any high point for ISMF and WEEK.

Drawdown Indicators

	ISMF	WEEK	Difference
Max Drawdown Largest peak-to-trough decline	-4.23%	-0.13%	-4.10%
Max Drawdown (1Y) Largest decline over 1 year	-3.94%	-0.13%	-3.81%
Current Drawdown Current decline from peak	-0.81%	0.00%	-0.81%
Average Drawdown Average peak-to-trough decline	-1.28%	-0.01%	-1.27%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.14%	0.01%	+1.13%

Volatility

ISMF vs. WEEK - Volatility Comparison

iShares Managed Futures Active ETF (ISMF) has a higher volatility of 1.72% compared to Roundhill Weekly T-Bill ETF (WEEK) at 0.07%. This indicates that ISMF's price experiences larger fluctuations and is considered to be riskier than WEEK based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ISMF	WEEK	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.72%	0.07%	+1.65%
Volatility (6M) Calculated over the trailing 6-month period	6.29%	0.25%	+6.04%
Volatility (1Y) Calculated over the trailing 1-year period	7.88%	0.41%	+7.47%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	7.76%	0.39%	+7.37%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	7.76%	0.39%	+7.37%

ISMF vs. WEEK - Expense Ratio Comparison

ISMF has a 0.80% expense ratio, which is higher than WEEK's 0.19% expense ratio.

Dividends

ISMF vs. WEEK - Dividend Comparison

ISMF's dividend yield for the trailing twelve months is around 5.80%, more than WEEK's 3.80% yield.

Position	TTM	2025
ISMF iShares Managed Futures Active ETF	5.80%	6.23%
WEEK Roundhill Weekly T-Bill ETF	3.72%	3.27%

Frequently Asked Questions

Can I hold both ISMF and WEEK in my portfolio?

ISMF and WEEK have a correlation of -0.20, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ISMF or WEEK?

ISMF has higher volatility (1.72%) compared to WEEK (0.07%). In terms of maximum drawdown, ISMF dropped -4.23% vs WEEK's -0.13%.

Which ETF is better, ISMF or WEEK?

On 1-year performance, ISMF leads with 21.28% vs 3.80% for WEEK. On fees, WEEK is cheaper at 0.19% per year. On volatility, WEEK has been the lower-risk option at 0.07%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, ISMF or WEEK?

Over the 1-year period, ISMF has performed better with a 21.28% return vs 3.80%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, ISMF or WEEK?

WEEK is cheaper with a 0.19% expense ratio, compared with 0.80% for ISMF.

Which ETF pays a higher dividend yield, ISMF or WEEK?

ISMF has the higher dividend yield at 5.80%, compared with 3.80% for WEEK.

What is the main difference between ISMF and WEEK?

ISMF is categorized as Systematic Trend, while WEEK is Ultrashort Bond. They also come from different issuers: iShares and Roundhill. Their fees differ too: 0.80% for ISMF and 0.19% for WEEK.

Which has better risk-adjusted returns?

WEEK currently has the higher Sharpe Ratio (9.27 vs 2.71), 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.