TLDIX vs. FHQFX

Last updated Apr 1, 2026

Compare and contrast key facts about Thornburg Ultra Short Income Fund (TLDIX) and Fidelity Series Treasury Bill Index Fund (FHQFX).

TLDIX is managed by Thornburg. It was launched on Dec 30, 2013. FHQFX is managed by Fidelity. It was launched on Aug 28, 2018.

Performance

TLDIX vs. FHQFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Thornburg Ultra Short Income Fund (TLDIX) and Fidelity Series Treasury Bill Index Fund (FHQFX). The values are adjusted to include any dividend payments, if applicable.

TLDIX vs. FHQFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
TLDIX Thornburg Ultra Short Income Fund	0.72%	4.84%	5.81%	4.92%	-0.00%	0.32%	0.44%
FHQFX Fidelity Series Treasury Bill Index Fund	0.48%	4.37%	5.56%	4.47%	-0.50%	0.01%	-0.04%

Returns By Period

In the year-to-date period, TLDIX achieves a 0.72% return, which is significantly higher than FHQFX's 0.48% return.

TLDIX

• 1D: 0.00%
• 1M: 0.08%
• YTD: 0.72%
• 6M: 1.81%
• 1Y: 4.33%
• 3Y*: 4.97%
• 5Y*: 3.28%
• 10Y*: 2.78%

FHQFX

• 1D: 0.00%
• 1M: 0.00%
• YTD: 0.48%
• 6M: 1.58%
• 1Y: 3.76%
• 3Y*: 4.57%
• 5Y*: 2.85%
• 10Y*: —

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

TLDIX vs. FHQFX - Expense Ratio Comparison

TLDIX has a 0.76% expense ratio, which is higher than FHQFX's 0.00% expense ratio.

TLDIX

Thornburg Ultra Short Income Fund

FHQFX

Fidelity Series Treasury Bill Index Fund

Return for Risk

TLDIX vs. FHQFX — Risk / Return Rank

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

TLDIX

TLDIX Risk / Return Rank: 100
TLDIX Sharpe Ratio Rank: 99
TLDIX Sortino Ratio Rank: 100
TLDIX Omega Ratio Rank: 100
TLDIX Calmar Ratio Rank: 100
TLDIX Martin Ratio Rank: 100

FHQFX

FHQFX Risk / Return Rank: 100
FHQFX Sharpe Ratio Rank: 99
FHQFX Sortino Ratio Rank: 100
FHQFX Omega Ratio Rank: 100
FHQFX Calmar Ratio Rank: 100
FHQFX Martin Ratio Rank: 100

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.

TLDIX vs. FHQFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Thornburg Ultra Short Income Fund (TLDIX) and Fidelity Series Treasury Bill Index Fund (FHQFX). 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.

	TLDIX	FHQFX	Difference
Sharpe ratio Return per unit of total volatility	3.49	3.58	-0.09
Sortino ratio Return per unit of downside risk	15.85	23.67	-7.82
Omega ratio Gain probability vs. loss probability	5.39	14.48	-9.09
Calmar ratio Return relative to maximum drawdown	19.45	41.17	-21.72
Martin ratio Return relative to average drawdown	86.69	99.69	-13.00
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

TLDIX vs. FHQFX - Sharpe Ratio Comparison

The current TLDIX Sharpe Ratio is 3.49, which is comparable to the FHQFX Sharpe Ratio of 3.58. The chart below compares the historical Sharpe Ratios of TLDIX and FHQFX, 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

	TLDIX	FHQFX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.49	3.58	-0.09
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	2.52	2.35	+0.17
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	2.20	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	2.06	2.24	-0.18

Correlation

The correlation between TLDIX and FHQFX is 0.34, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.

Dividends

TLDIX vs. FHQFX - Dividend Comparison

TLDIX's dividend yield for the trailing twelve months is around 4.23%, more than FHQFX's 3.68% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
TLDIX Thornburg Ultra Short Income Fund	4.23%	4.89%	5.64%	4.12%	2.12%	1.53%	2.32%	2.82%	2.37%	1.62%	1.24%	0.89%
FHQFX Fidelity Series Treasury Bill Index Fund	3.68%	4.16%	5.09%	4.67%	0.00%	0.01%	0.06%	0.00%	0.00%	0.00%	0.00%	0.00%

Drawdowns

TLDIX vs. FHQFX - Drawdown Comparison

The maximum TLDIX drawdown since its inception was -3.43%, which is greater than FHQFX's maximum drawdown of -0.70%. Use the drawdown chart below to compare losses from any high point for TLDIX and FHQFX.

Drawdown Indicators

	TLDIX	FHQFX	Difference
Max Drawdown Largest peak-to-trough decline	-3.43%	-0.70%	-2.73%
Max Drawdown (1Y) Largest decline over 1 year	-0.25%	-0.10%	-0.15%
Max Drawdown (5Y) Largest decline over 5 years	-1.39%	-0.70%	-0.69%
Max Drawdown (10Y) Largest decline over 10 years	-3.43%	—	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-0.17%	-0.09%	-0.08%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.06%	0.04%	+0.02%

Volatility

TLDIX vs. FHQFX - Volatility Comparison

Thornburg Ultra Short Income Fund (TLDIX) has a higher volatility of 0.19% compared to Fidelity Series Treasury Bill Index Fund (FHQFX) at 0.00%. This indicates that TLDIX's price experiences larger fluctuations and is considered to be riskier than FHQFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	TLDIX	FHQFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.19%	0.00%	+0.19%
Volatility (6M) Calculated over the trailing 6-month period	0.92%	0.78%	+0.14%
Volatility (1Y) Calculated over the trailing 1-year period	1.38%	1.19%	+0.19%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	1.31%	1.23%	+0.08%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	1.27%	1.18%	+0.09%