LFAI vs. IBTE

Last updated Jun 3, 2026

LFAI (LifeX 2050 Longevity Income ETF) and IBTE (iShares iBonds Dec 2024 Term Treasury ETF) are both Government Bonds funds. LFAI is actively managed, while IBTE is passively managed. LFAI charges 0.25%/yr vs 0.07%/yr for IBTE.

Performance

LFAI vs. IBTE - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in LifeX 2050 Longevity Income ETF (LFAI) and iShares iBonds Dec 2024 Term Treasury ETF (IBTE). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

LFAI

• 1D: 0.15%
• 1M: 0.15%
• YTD: -0.12%
• 6M: -0.69%
• 1Y: 4.46%
• 3Y*: —
• 5Y*: —
• 10Y*: —

IBTE

• 1D: 0.00%
• 1M: 0.00%
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

LFAI vs. IBTE - Yearly Performance Comparison

	2026 (YTD)
LFAI LifeX 2050 Longevity Income ETF	-0.58%
IBTE iShares iBonds Dec 2024 Term Treasury ETF	0.00%

Return for Risk

LFAI vs. IBTE — Risk / Return Rank

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

LFAI

LFAI Risk / Return Rank: 19
LFAI Sharpe Ratio Rank: 20
LFAI Sortino Ratio Rank: 20
LFAI Omega Ratio Rank: 18
LFAI Calmar Ratio Rank: 18
LFAI Martin Ratio Rank: 19

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.

LFAI vs. IBTE - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for LifeX 2050 Longevity Income ETF (LFAI) and iShares iBonds Dec 2024 Term Treasury ETF (IBTE). 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.

	LFAI	IBTE	Difference
Sharpe ratio Return per unit of total volatility	0.71	—	—
Sortino ratio Return per unit of downside risk	1.07	—	—
Omega ratio Gain probability vs. loss probability	1.12	—	—
Calmar ratio Return relative to maximum drawdown	0.75	—	—
Martin ratio Return relative to average drawdown	2.13	—	—
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

Sharpe Ratios by Period

	LFAI	IBTE	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.71	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	-0.13	—	—

Drawdowns

LFAI vs. IBTE - Drawdown Comparison

The maximum LFAI drawdown since its inception was -8.64%, which is greater than IBTE's maximum drawdown of 0.00%. Use the drawdown chart below to compare losses from any high point for LFAI and IBTE.

Drawdown Indicators

	LFAI	IBTE	Difference
Max Drawdown Largest peak-to-trough decline	-8.64%	0.00%	-8.64%
Max Drawdown (1Y) Largest decline over 1 year	-5.30%	—	—
Current Drawdown Current decline from peak	-3.08%	0.00%	-3.08%
Average Drawdown Average peak-to-trough decline	-3.52%	0.00%	-3.52%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.86%	—	—

Volatility

Volatility by Period

	LFAI	IBTE	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.08%	—	—
Volatility (6M) Calculated over the trailing 6-month period	4.48%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	6.31%	0.00%	+6.31%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	7.16%	0.00%	+7.16%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	7.16%	0.00%	+7.16%

LFAI vs. IBTE - Expense Ratio Comparison

LFAI has a 0.25% expense ratio, which is higher than IBTE's 0.07% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

LFAI vs. IBTE - Dividend Comparison

LFAI's dividend yield for the trailing twelve months is around 14.23%, while IBTE has not paid dividends to shareholders.

Position	TTM	2025	2024
IBTE iShares iBonds Dec 2024 Term Treasury ETF	0.00%	0.00%	0.00%
LFAI LifeX 2050 Longevity Income ETF	13.51%	16.48%	1.91%

Frequently Asked Questions

Which ETF is better, LFAI or IBTE?

On fees, IBTE is cheaper at 0.07% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, LFAI or IBTE?

IBTE is cheaper with a 0.07% expense ratio, compared with 0.25% for LFAI.

Which ETF pays a higher dividend yield, LFAI or IBTE?

LFAI has the higher dividend yield at 14.23%, compared with 0.00% for IBTE.

What is the main difference between LFAI and IBTE?

They also come from different issuers: Stone Ridge and iShares. Their fees differ too: 0.25% for LFAI and 0.07% for IBTE.