LSYAX vs. LUBYX

Last updated Jun 5, 2026

LSYAX (Lord Abbett Short Duration High Yield Fund) and LUBYX (Lord Abbett Ultra Short Bond Fund) are both mutual funds - LSYAX is a High Yield Bonds fund tracking the ICE BofA HY U.S. Corp, Cash Pay, BB-B 1-5 YR USD Index, while LUBYX is a Ultrashort Bond fund managed by Lord Abbett. Over the past 5 years, LSYAX returned 4.52%/yr vs 3.35%/yr for LUBYX. At a 0.36 correlation, their price movements are largely independent. LSYAX charges 0.65%/yr vs 0.28%/yr for LUBYX.

Performance

LSYAX vs. LUBYX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Lord Abbett Short Duration High Yield Fund (LSYAX) and Lord Abbett Ultra Short Bond Fund (LUBYX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, LSYAX achieves a 2.26% return, which is significantly higher than LUBYX's 1.44% return.

LSYAX

• 1D: -0.21%
• 1M: 0.54%
• YTD: 2.26%
• 6M: 2.69%
• 1Y: 8.15%
• 3Y*: 8.61%
• 5Y*: 4.52%
• 10Y*: —

LUBYX

• 1D: 0.00%
• 1M: 0.34%
• YTD: 1.44%
• 6M: 1.81%
• 1Y: 4.40%
• 3Y*: 5.15%
• 5Y*: 3.35%
• 10Y*: —

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

LSYAX vs. LUBYX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
LSYAX Lord Abbett Short Duration High Yield Fund	2.26%	7.50%	8.46%	10.60%	-7.21%	4.50%	14.22%
LUBYX Lord Abbett Ultra Short Bond Fund	1.44%	4.99%	5.70%	5.16%	-0.38%	0.07%	1.68%

Correlation

The correlation between LSYAX and LUBYX is 0.43, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.44
Correlation (3Y) Calculated over the trailing 3-year period	0.42
Correlation (5Y) Calculated over the trailing 5-year period	0.38
Correlation (All Time) Calculated using the full available price history since Apr 24, 2020	0.36

Return for Risk

LSYAX vs. LUBYX — Risk / Return Rank

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

LSYAX

LSYAX Risk / Return Rank: 76
LSYAX Sharpe Ratio Rank: 66
LSYAX Sortino Ratio Rank: 91
LSYAX Omega Ratio Rank: 85
LSYAX Calmar Ratio Rank: 60
LSYAX Martin Ratio Rank: 77

LUBYX

LUBYX Risk / Return Rank: 98
LUBYX Sharpe Ratio Rank: 94
LUBYX Sortino Ratio Rank: 99
LUBYX Omega Ratio Rank: 99
LUBYX Calmar Ratio Rank: 99
LUBYX 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.

LSYAX vs. LUBYX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Lord Abbett Short Duration High Yield Fund (LSYAX) and Lord Abbett Ultra Short Bond Fund (LUBYX). 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.

	LSYAX	LUBYX	Difference
Sharpe ratio: Return per unit of total volatility	2.38	3.28	-0.91
Sortino ratio: Return per unit of downside risk	4.52	10.78	-6.26
Omega ratio: Gain probability vs. loss probability	1.59	3.61	-2.02
Calmar ratio: Return relative to maximum drawdown	2.96	11.37	-8.41
Martin ratio: Return relative to average drawdown	14.43	53.56	-39.12
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

LSYAX vs. LUBYX - Sharpe Ratio Comparison

The current LSYAX Sharpe Ratio is 2.38, which is comparable to the LUBYX Sharpe Ratio of 3.28. The chart below compares the historical Sharpe Ratios of LSYAX and LUBYX, 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

	LSYAX	LUBYX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.38	3.28	-0.91
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	1.06	2.46	-1.40
Sharpe Ratio (All Time) Calculated using the full available price history	1.53	2.22	-0.69

Drawdowns

LSYAX vs. LUBYX - Drawdown Comparison

The maximum LSYAX drawdown since its inception was -10.79%, which is greater than LUBYX's maximum drawdown of -2.59%. Use the drawdown chart below to compare losses from any high point for LSYAX and LUBYX.

Drawdown Indicators

	LSYAX	LUBYX	Difference
Max Drawdown Largest peak-to-trough decline	-10.79%	-2.59%	-8.20%
Max Drawdown (1Y) Largest decline over 1 year	-2.84%	-0.40%	-2.44%
Max Drawdown (3Y) Largest decline over 3 years	-5.30%	-0.50%	-4.80%
Max Drawdown (5Y) Largest decline over 5 years	-10.79%	-1.86%	-8.93%
Current Drawdown Current decline from peak	-0.21%	0.00%	-0.21%
Average Drawdown Average peak-to-trough decline	-1.86%	-0.17%	-1.69%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.58%	0.08%	+0.50%

Volatility

LSYAX vs. LUBYX - Volatility Comparison

Lord Abbett Short Duration High Yield Fund (LSYAX) has a higher volatility of 1.00% compared to Lord Abbett Ultra Short Bond Fund (LUBYX) at 0.40%. This indicates that LSYAX's price experiences larger fluctuations and is considered to be riskier than LUBYX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	LSYAX	LUBYX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.00%	0.40%	+0.60%
Volatility (6M) Calculated over the trailing 6-month period	2.83%	0.95%	+1.88%
Volatility (1Y) Calculated over the trailing 1-year period	3.54%	1.38%	+2.16%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.29%	1.37%	+2.92%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.20%	1.12%	+3.08%

LSYAX vs. LUBYX - Expense Ratio Comparison

LSYAX has a 0.65% expense ratio, which is higher than LUBYX's 0.28% expense ratio.

Dividends

LSYAX vs. LUBYX - Dividend Comparison

LSYAX's dividend yield for the trailing twelve months is around 7.87%, more than LUBYX's 4.41% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
LSYAX Lord Abbett Short Duration High Yield Fund	7.87%	7.91%	8.01%	6.38%	4.86%	5.77%	4.64%	0.00%	0.00%	0.00%
LUBYX Lord Abbett Ultra Short Bond Fund	4.41%	4.66%	4.72%	3.69%	1.33%	0.57%	1.16%	2.55%	2.27%	0.52%

Frequently Asked Questions

Can I hold both LSYAX and LUBYX in my portfolio?

LSYAX and LUBYX have a correlation of 0.43, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, LSYAX or LUBYX?

LSYAX has higher volatility (1.00%) compared to LUBYX (0.40%). In terms of maximum drawdown, LSYAX dropped -10.79% vs LUBYX's -2.59%.

Which has better risk-adjusted returns?

LUBYX currently has the higher Sharpe Ratio (3.28 vs 2.38), 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.