LBFFX vs. LUBYX

Last updated Jun 4, 2026

LBFFX (Lord Abbett Convertible Fund Class F) and LUBYX (Lord Abbett Ultra Short Bond Fund) are both mutual funds - LBFFX is a Preferred Stock/Convertible Bonds fund managed by Lord Abbett, while LUBYX is a Ultrashort Bond fund managed by Lord Abbett. Over the past 5 years, LBFFX returned 7.29%/yr vs 3.35%/yr for LUBYX. At a 0.06 correlation, their price movements are largely independent. LBFFX charges 0.93%/yr vs 0.28%/yr for LUBYX.

Performance

LBFFX vs. LUBYX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Lord Abbett Convertible Fund Class F (LBFFX) 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, LBFFX achieves a 22.45% return, which is significantly higher than LUBYX's 1.44% return.

LBFFX

• 1D: 0.93%
• 1M: 5.66%
• YTD: 22.45%
• 6M: 22.84%
• 1Y: 42.04%
• 3Y*: 21.29%
• 5Y*: 7.29%
• 10Y*: 13.36%

LUBYX

• 1D: 0.00%
• 1M: 0.34%
• YTD: 1.44%
• 6M: 1.81%
• 1Y: 4.51%
• 3Y*: 5.15%
• 5Y*: 3.35%
• 10Y*: —

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

LBFFX vs. LUBYX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
LBFFX Lord Abbett Convertible Fund Class F	22.45%	22.11%	13.82%	7.16%	-23.30%	1.26%	64.16%	24.19%	-5.89%	16.68%
LUBYX Lord Abbett Ultra Short Bond Fund	1.44%	4.99%	5.70%	5.16%	-0.38%	0.07%	1.27%	3.00%	2.09%	0.73%

Correlation

The correlation between LBFFX and LUBYX is 0.06, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.06
Correlation (3Y) Calculated over the trailing 3-year period	0.08
Correlation (5Y) Calculated over the trailing 5-year period	0.09
Correlation (All Time) Calculated using the full available price history since Oct 28, 2016	0.06

Return for Risk

LBFFX vs. LUBYX — Risk / Return Rank

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

LBFFX

LBFFX Risk / Return Rank: 88
LBFFX Sharpe Ratio Rank: 89
LBFFX Sortino Ratio Rank: 80
LBFFX Omega Ratio Rank: 78
LBFFX Calmar Ratio Rank: 96
LBFFX Martin Ratio Rank: 95

LUBYX

LUBYX Risk / Return Rank: 98
LUBYX Sharpe Ratio Rank: 93
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.

LBFFX vs. LUBYX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Lord Abbett Convertible Fund Class F (LBFFX) 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.

	LBFFX	LUBYX	Difference
Sharpe ratio: Return per unit of total volatility	2.93	3.20	-0.27
Sortino ratio: Return per unit of downside risk	3.81	10.24	-6.43
Omega ratio: Gain probability vs. loss probability	1.51	3.41	-1.90
Calmar ratio: Return relative to maximum drawdown	6.10	11.11	-5.01
Martin ratio: Return relative to average drawdown	22.79	52.32	-29.53
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

LBFFX vs. LUBYX - Sharpe Ratio Comparison

The current LBFFX Sharpe Ratio is 2.93, which is comparable to the LUBYX Sharpe Ratio of 3.20. The chart below compares the historical Sharpe Ratios of LBFFX 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

	LBFFX	LUBYX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.93	3.20	-0.27
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.56	2.46	-1.89
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.98	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.69	2.22	-1.54

Drawdowns

LBFFX vs. LUBYX - Drawdown Comparison

The maximum LBFFX drawdown since its inception was -41.13%, which is greater than LUBYX's maximum drawdown of -2.59%. Use the drawdown chart below to compare losses from any high point for LBFFX and LUBYX.

Drawdown Indicators

	LBFFX	LUBYX	Difference
Max Drawdown Largest peak-to-trough decline	-41.13%	-2.59%	-38.54%
Max Drawdown (1Y) Largest decline over 1 year	-7.07%	-0.40%	-6.67%
Max Drawdown (3Y) Largest decline over 3 years	-12.15%	-0.50%	-11.65%
Max Drawdown (5Y) Largest decline over 5 years	-30.86%	-1.86%	-29.00%
Max Drawdown (10Y) Largest decline over 10 years	-33.61%	—	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-10.31%	-0.17%	-10.14%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.89%	0.08%	+1.81%

Volatility

LBFFX vs. LUBYX - Volatility Comparison

Lord Abbett Convertible Fund Class F (LBFFX) has a higher volatility of 5.38% compared to Lord Abbett Ultra Short Bond Fund (LUBYX) at 0.40%. This indicates that LBFFX'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

	LBFFX	LUBYX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.38%	0.40%	+4.98%
Volatility (6M) Calculated over the trailing 6-month period	12.19%	0.95%	+11.24%
Volatility (1Y) Calculated over the trailing 1-year period	14.72%	1.38%	+13.34%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	13.00%	1.37%	+11.63%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	13.67%	1.12%	+12.55%

LBFFX vs. LUBYX - Expense Ratio Comparison

LBFFX has a 0.93% expense ratio, which is higher than LUBYX's 0.28% expense ratio.

Dividends

LBFFX vs. LUBYX - Dividend Comparison

LBFFX's dividend yield for the trailing twelve months is around 1.22%, less than LUBYX's 4.41% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
LBFFX Lord Abbett Convertible Fund Class F	1.22%	1.80%	2.22%	1.95%	2.60%	18.44%	16.27%	8.71%	4.91%	2.47%	3.64%	3.38%
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%	0.00%	0.00%

Frequently Asked Questions

Can I hold both LBFFX and LUBYX in my portfolio?

LBFFX and LUBYX have a correlation of 0.06, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, LBFFX or LUBYX?

LBFFX has higher volatility (5.38%) compared to LUBYX (0.40%). In terms of maximum drawdown, LBFFX dropped -41.13% vs LUBYX's -2.59%.

Which has better risk-adjusted returns?

LUBYX currently has the higher Sharpe Ratio (3.20 vs 2.93), 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.