TBLL vs. BOXX

Last updated Jun 4, 2026

TBLL (Invesco Short Term Treasury ETF) and BOXX (Alpha Architect 1-3 Month Box ETF) are both Ultrashort Bond funds - TBLL tracks the ICE U.S. Treasury Short Bond Index while BOXX tracks the Solactive 1-3 Month US T-Bill Index. Both are passively managed. Over the past 3 years, TBLL returned 4.66%/yr vs 4.75%/yr for BOXX. At a 0.23 correlation, their price movements are largely independent. TBLL charges 0.08%/yr vs 0.19%/yr for BOXX.

Performance

TBLL vs. BOXX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Invesco Short Term Treasury ETF (TBLL) and Alpha Architect 1-3 Month Box ETF (BOXX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, TBLL achieves a 1.43% return, which is significantly lower than BOXX's 1.58% return.

TBLL

• 1D: 0.01%
• 1M: 0.29%
• YTD: 1.43%
• 6M: 1.74%
• 1Y: 3.93%
• 3Y*: 4.66%
• 5Y*: 3.35%
• 10Y*: —

BOXX

• 1D: 0.00%
• 1M: 0.28%
• YTD: 1.58%
• 6M: 1.97%
• 1Y: 4.10%
• 3Y*: 4.75%
• 5Y*: —
• 10Y*: —

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

TBLL vs. BOXX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022
TBLL Invesco Short Term Treasury ETF	1.43%	4.21%	5.11%	5.01%	0.00%
BOXX Alpha Architect 1-3 Month Box ETF	1.58%	4.37%	5.16%	5.04%	0.07%

Correlation

The correlation between TBLL and BOXX is 0.29, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.29
Correlation (3Y) Calculated over the trailing 3-year period	0.23
Correlation (All Time) Calculated using the full available price history since Dec 29, 2022	0.23

TBLL vs. BOXX - Sectors Allocation Comparison

Sectors	TBLL	BOXX
Financial Services	64.0%	12.3%
Basic Materials	-	1.9%
Communication Services	-	10.7%
Consumer Cyclical	-	10.1%
Consumer Defensive	-	5.4%
Energy	-	3.5%
Healthcare	-	9.8%
Industrials	-	8.7%
Real Estate	-	2.0%
Technology	-	33.1%
Utilities	-	2.5%

Return for Risk

TBLL vs. BOXX — Risk / Return Rank

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

TBLL

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

BOXX

BOXX Risk / Return Rank: 100
BOXX Sharpe Ratio Rank: 100
BOXX Sortino Ratio Rank: 100
BOXX Omega Ratio Rank: 100
BOXX Calmar Ratio Rank: 100
BOXX 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.

TBLL vs. BOXX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Invesco Short Term Treasury ETF (TBLL) and Alpha Architect 1-3 Month Box ETF (BOXX). 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.

	TBLL	BOXX	Difference
Sharpe ratio: Return per unit of total volatility	20.94	12.84	+8.09
Sortino ratio: Return per unit of downside risk	218.31	38.04	+180.27
Omega ratio: Gain probability vs. loss probability	102.92	9.98	+92.94
Calmar ratio: Return relative to maximum drawdown	416.84	59.77	+357.07
Martin ratio: Return relative to average drawdown	3,533.11	531.84	+3,001.27
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

TBLL vs. BOXX - Sharpe Ratio Comparison

The current TBLL Sharpe Ratio is 20.94, which is higher than the BOXX Sharpe Ratio of 12.84. The chart below compares the historical Sharpe Ratios of TBLL and BOXX, 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

	TBLL	BOXX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	20.94	12.84	+8.09
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	7.53	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	4.26	12.91	-8.65

Drawdowns

TBLL vs. BOXX - Drawdown Comparison

The maximum TBLL drawdown since its inception was -0.63%, which is greater than BOXX's maximum drawdown of -0.12%. Use the drawdown chart below to compare losses from any high point for TBLL and BOXX.

Drawdown Indicators

	TBLL	BOXX	Difference
Max Drawdown Largest peak-to-trough decline	-0.63%	-0.12%	-0.51%
Max Drawdown (1Y) Largest decline over 1 year	-0.01%	-0.07%	+0.06%
Max Drawdown (3Y) Largest decline over 3 years	-0.36%	-0.12%	-0.24%
Max Drawdown (5Y) Largest decline over 5 years	-0.36%	—	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-0.14%	-0.00%	-0.14%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.00%	0.01%	-0.01%

Volatility

TBLL vs. BOXX - Volatility Comparison

The current volatility for Invesco Short Term Treasury ETF (TBLL) is 0.05%, while Alpha Architect 1-3 Month Box ETF (BOXX) has a volatility of 0.09%. This indicates that TBLL experiences smaller price fluctuations and is considered to be less risky than BOXX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	TBLL	BOXX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.05%	0.09%	-0.04%
Volatility (6M) Calculated over the trailing 6-month period	0.12%	0.25%	-0.13%
Volatility (1Y) Calculated over the trailing 1-year period	0.19%	0.32%	-0.13%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.45%	0.37%	+0.08%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.56%	0.37%	+0.19%

TBLL vs. BOXX - Expense Ratio Comparison

TBLL has a 0.08% expense ratio, which is lower than BOXX's 0.19% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

TBLL vs. BOXX - Dividend Comparison

TBLL's dividend yield for the trailing twelve months is around 3.81%, while BOXX has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
BOXX Alpha Architect 1-3 Month Box ETF	0.00%	0.00%	0.26%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
TBLL Invesco Short Term Treasury ETF	3.81%	4.08%	4.99%	4.63%	1.37%	0.03%	0.80%	2.08%	1.69%	0.71%

Frequently Asked Questions

Can I hold both TBLL and BOXX in my portfolio?

TBLL and BOXX have a correlation of 0.29, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, TBLL or BOXX?

BOXX has higher volatility (0.09%) compared to TBLL (0.05%). In terms of maximum drawdown, TBLL dropped -0.63% vs BOXX's -0.12%.

Which ETF is better, TBLL or BOXX?

On 3-year performance, BOXX leads with 4.75% vs 4.66% for TBLL. On fees, TBLL is cheaper at 0.08% per year. Their volatility is very similar. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, TBLL or BOXX?

Over the 3-year period, BOXX has performed better with a 4.75% return vs 4.66%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, TBLL or BOXX?

TBLL is cheaper with a 0.08% expense ratio, compared with 0.19% for BOXX.

Which ETF pays a higher dividend yield, TBLL or BOXX?

TBLL has the higher dividend yield at 3.81%, compared with 0.00% for BOXX.

What is the main difference between TBLL and BOXX?

TBLL tracks ICE U.S. Treasury Short Bond Index, while BOXX tracks Solactive 1-3 Month US T-Bill Index. They also come from different issuers: Invesco and Alpha Architect. Their fees differ too: 0.08% for TBLL and 0.19% for BOXX.

Which has better risk-adjusted returns?

TBLL currently has the higher Sharpe Ratio (20.94 vs 12.84), 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.