LIBD vs. COMT

Last updated Jul 17, 2026

LIBD (LifeX 2065 Inflation-Protected Longevity Income ETF) and COMT (iShares GSCI Commodity Dynamic Roll Strategy ETF) are both exchange-traded funds - LIBD is a Inflation-Protected Bonds fund actively managed by Stone Ridge, while COMT is a Commodities fund tracking the S&P GSCI Dynamic Roll (USD) Total Return Index. LIBD is actively managed, while COMT is passively managed. Over the past year, LIBD returned 1.10% vs 33.20% for COMT. At a correlation of -0.24, they often move in opposite directions. LIBD charges 0.25%/yr vs 0.48%/yr for COMT.

Performance

LIBD vs. COMT - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in LifeX 2065 Inflation-Protected Longevity Income ETF (LIBD) and iShares GSCI Commodity Dynamic Roll Strategy ETF (COMT). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, LIBD achieves a -1.45% return, which is significantly lower than COMT's 30.19% return.

LIBD

• 1D: -0.20%
• 1M: -2.57%
• 6M: -2.58%
• YTD: -1.45%
• 1Y: 1.10%
• 3Y*: —
• 5Y*: —
• 10Y*: —

COMT

• 1D: -0.49%
• 1M: 2.53%
• 6M: 26.18%
• YTD: 30.19%
• 1Y: 33.20%
• 3Y*: 12.71%
• 5Y*: 11.75%
• 10Y*: 8.33%

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

LIBD vs. COMT - Yearly Performance Comparison

	2026 (YTD)	2025
LIBD LifeX 2065 Inflation-Protected Longevity Income ETF	-1.45%	-0.63%
COMT iShares GSCI Commodity Dynamic Roll Strategy ETF	30.19%	5.12%

Correlation

The correlation between LIBD and COMT is -0.31, 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	-0.31
Correlation (All Time) Calculated using the full available price history since Jan 6, 2025	-0.24

Return for Risk

LIBD vs. COMT — Risk / Return Rank

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

LIBD

LIBD Risk / Return Rank: 11
LIBD Sharpe Ratio Rank: 12
LIBD Sortino Ratio Rank: 10
LIBD Omega Ratio Rank: 10
LIBD Calmar Ratio Rank: 12
LIBD Martin Ratio Rank: 11

COMT

COMT Risk / Return Rank: 52
COMT Sharpe Ratio Rank: 57
COMT Sortino Ratio Rank: 55
COMT Omega Ratio Rank: 54
COMT Calmar Ratio Rank: 45
COMT Martin Ratio Rank: 47

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.

LIBD vs. COMT - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for LifeX 2065 Inflation-Protected Longevity Income ETF (LIBD) and iShares GSCI Commodity Dynamic Roll Strategy ETF (COMT). 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.

	LIBD	COMT	Difference
Sharpe ratio: Return per unit of total volatility	0.14	1.55	-1.41
Sortino ratio: Return per unit of downside risk	0.25	2.13	-1.88
Omega ratio: Gain probability vs. loss probability	1.03	1.27	-0.25
Calmar ratio: Return relative to maximum drawdown	0.18	1.90	-1.72
Martin ratio: Return relative to average drawdown	0.35	6.35	-6.00

LIBD vs. COMT - Sharpe Ratio Comparison

The current LIBD Sharpe Ratio is 0.14, which is lower than the COMT Sharpe Ratio of 1.55. The chart below compares the historical Sharpe Ratios of LIBD and COMT, 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

LIBD vs. COMT - Drawdown Comparison

The maximum LIBD drawdown since its inception was -7.31%, smaller than the maximum COMT drawdown of -51.89%. Use the drawdown chart below to compare losses from any high point for LIBD and COMT.

Drawdown Indicators

	LIBD	COMT	Difference
Max Drawdown Largest peak-to-trough decline	-7.31%	-51.89%	+44.58%
Max Drawdown (1Y) Largest decline over 1 year	-6.19%	-17.57%	+11.38%
Max Drawdown (3Y) Largest decline over 3 years	—	-17.57%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-29.00%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-39.22%	—
Current Drawdown Current decline from peak	-5.54%	-11.28%	+5.74%
Average Drawdown Average peak-to-trough decline	-3.39%	-23.95%	+20.56%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.16%	5.24%	-2.08%

Volatility

LIBD vs. COMT - Volatility Comparison

The current volatility for LifeX 2065 Inflation-Protected Longevity Income ETF (LIBD) is 2.29%, while iShares GSCI Commodity Dynamic Roll Strategy ETF (COMT) has a volatility of 5.91%. This indicates that LIBD experiences smaller price fluctuations and is considered to be less risky than COMT based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	LIBD	COMT	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.29%	5.91%	-3.62%
Volatility (6M) Calculated over the trailing 6-month period	5.90%	19.67%	-13.77%
Volatility (1Y) Calculated over the trailing 1-year period	7.95%	21.54%	-13.59%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	10.00%	21.20%	-11.20%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	10.00%	18.85%	-8.85%

LIBD vs. COMT - Expense Ratio Comparison

LIBD has a 0.25% expense ratio, which is lower than COMT's 0.48% expense ratio.

Dividends

LIBD vs. COMT - Dividend Comparison

LIBD's dividend yield for the trailing twelve months is around 11.71%, more than COMT's 5.95% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
COMT iShares GSCI Commodity Dynamic Roll Strategy ETF	5.95%	7.74%	4.90%	5.19%	29.79%	17.79%	0.36%	2.61%	11.65%	5.16%	0.52%	1.44%
LIBD LifeX 2065 Inflation-Protected Longevity Income ETF	11.71%	13.52%	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 LIBD and COMT in my portfolio?

LIBD and COMT have a correlation of -0.31, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, LIBD or COMT?

COMT has higher volatility (5.91%) compared to LIBD (2.29%). In terms of maximum drawdown, LIBD dropped -7.31% vs COMT's -51.89%.

Which ETF is better, LIBD or COMT?

On 1-year performance, COMT leads with 33.20% vs 1.10% for LIBD. On fees, LIBD is cheaper at 0.25% per year. On volatility, LIBD has been the lower-risk option at 2.29%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, LIBD or COMT?

Over the 1-year period, COMT has performed better with a 33.20% return vs 1.10%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, LIBD or COMT?

LIBD is cheaper with a 0.25% expense ratio, compared with 0.48% for COMT.

Which ETF pays a higher dividend yield, LIBD or COMT?

LIBD has the higher dividend yield at 11.71%, compared with 5.95% for COMT.

What is the main difference between LIBD and COMT?

LIBD is categorized as Inflation-Protected Bonds, while COMT is Commodities. They also come from different issuers: Stone Ridge and iShares. Their fees differ too: 0.25% for LIBD and 0.48% for COMT.

Which has better risk-adjusted returns?

COMT currently has the higher Sharpe Ratio (1.55 vs 0.14), 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.