LDSF vs. ISDB

Last updated Apr 1, 2026

Compare and contrast key facts about First Trust Low Duration Strategic Focus ETF (LDSF) and Invesco Short Duration Bond ETF (ISDB).

LDSF and ISDB are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. LDSF is an actively managed fund by First Trust. It was launched on Jan 3, 2019. ISDB is an actively managed fund by Invesco. It was launched on Dec 5, 2022.

Performance

LDSF vs. ISDB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in First Trust Low Duration Strategic Focus ETF (LDSF) and Invesco Short Duration Bond ETF (ISDB). The values are adjusted to include any dividend payments, if applicable.

LDSF vs. ISDB - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022
LDSF First Trust Low Duration Strategic Focus ETF	-0.07%	6.82%	4.20%	6.53%	-0.35%
ISDB Invesco Short Duration Bond ETF	0.15%	6.23%	5.35%	5.17%	0.01%

Returns By Period

In the year-to-date period, LDSF achieves a -0.07% return, which is significantly lower than ISDB's 0.15% return.

LDSF

• 1D: 0.64%
• 1M: -0.94%
• YTD: -0.07%
• 6M: 1.25%
• 1Y: 4.97%
• 3Y*: 5.13%
• 5Y*: 2.33%
• 10Y*: —

ISDB

• 1D: 0.17%
• 1M: -0.66%
• YTD: 0.15%
• 6M: 1.63%
• 1Y: 4.84%
• 3Y*: 5.44%
• 5Y*: —
• 10Y*: —

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

LDSF vs. ISDB - Expense Ratio Comparison

LDSF has a 0.87% expense ratio, which is higher than ISDB's 0.36% expense ratio.

LDSF

First Trust Low Duration Strategic Focus ETF

ISDB

Invesco Short Duration Bond ETF

Return for Risk

LDSF vs. ISDB — Risk / Return Rank

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

LDSF

LDSF Risk / Return Rank: 92
LDSF Sharpe Ratio Rank: 92
LDSF Sortino Ratio Rank: 94
LDSF Omega Ratio Rank: 94
LDSF Calmar Ratio Rank: 89
LDSF Martin Ratio Rank: 92

ISDB

ISDB Risk / Return Rank: 97
ISDB Sharpe Ratio Rank: 98
ISDB Sortino Ratio Rank: 98
ISDB Omega Ratio Rank: 98
ISDB Calmar Ratio Rank: 96
ISDB Martin Ratio Rank: 97

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.

LDSF vs. ISDB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for First Trust Low Duration Strategic Focus ETF (LDSF) and Invesco Short Duration Bond ETF (ISDB). 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.

	LDSF	ISDB	Difference
Sharpe ratio Return per unit of total volatility	2.09	3.34	-1.25
Sortino ratio Return per unit of downside risk	2.93	5.13	-2.19
Omega ratio Gain probability vs. loss probability	1.45	1.77	-0.33
Calmar ratio Return relative to maximum drawdown	2.95	4.30	-1.35
Martin ratio Return relative to average drawdown	12.81	19.53	-6.72
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

LDSF vs. ISDB - Sharpe Ratio Comparison

The current LDSF Sharpe Ratio is 2.09, which is lower than the ISDB Sharpe Ratio of 3.34. The chart below compares the historical Sharpe Ratios of LDSF and ISDB, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	LDSF	ISDB	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.09	3.34	-1.25
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.76	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.79	2.75	-1.96

Correlation

The correlation between LDSF and ISDB is 0.65, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

LDSF vs. ISDB - Dividend Comparison

LDSF's dividend yield for the trailing twelve months is around 4.61%, less than ISDB's 4.69% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019
LDSF First Trust Low Duration Strategic Focus ETF	4.61%	4.52%	4.53%	4.08%	2.61%	1.97%	2.65%	3.06%
ISDB Invesco Short Duration Bond ETF	4.69%	4.89%	5.50%	5.20%	0.00%	0.00%	0.00%	0.00%

Drawdowns

LDSF vs. ISDB - Drawdown Comparison

The maximum LDSF drawdown since its inception was -8.56%, which is greater than ISDB's maximum drawdown of -1.83%. Use the drawdown chart below to compare losses from any high point for LDSF and ISDB.

Drawdown Indicators

	LDSF	ISDB	Difference
Max Drawdown Largest peak-to-trough decline	-8.56%	-1.83%	-6.73%
Max Drawdown (1Y) Largest decline over 1 year	-1.74%	-1.12%	-0.62%
Max Drawdown (5Y) Largest decline over 5 years	-7.83%	—	—
Current Drawdown Current decline from peak	-1.07%	-0.70%	-0.37%
Average Drawdown Average peak-to-trough decline	-1.48%	-0.26%	-1.22%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.40%	0.25%	+0.15%

Volatility

LDSF vs. ISDB - Volatility Comparison

First Trust Low Duration Strategic Focus ETF (LDSF) has a higher volatility of 1.17% compared to Invesco Short Duration Bond ETF (ISDB) at 0.77%. This indicates that LDSF's price experiences larger fluctuations and is considered to be riskier than ISDB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	LDSF	ISDB	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.17%	0.77%	+0.40%
Volatility (6M) Calculated over the trailing 6-month period	1.48%	1.05%	+0.43%
Volatility (1Y) Calculated over the trailing 1-year period	2.39%	1.46%	+0.93%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.08%	1.87%	+1.21%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.20%	1.87%	+1.33%