ZCBF vs. TFLO

Last updated Jun 6, 2026

ZCBF (Global X Zero Coupon Bond 2034 ETF) and TFLO (iShares Treasury Floating Rate Bond ETF) are both Government Bonds funds - ZCBF tracks the FTSE Zero Coupon U.S. Treasury STRIPS 2034 Maturity Index while TFLO tracks the Bloomberg U.S. Treasury Floating Rate Index. Both are passively managed. At a correlation of -0.10, they often move in opposite directions. ZCBF charges 0.07%/yr vs 0.15%/yr for TFLO.

Performance

ZCBF vs. TFLO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Global X Zero Coupon Bond 2034 ETF (ZCBF) and iShares Treasury Floating Rate Bond ETF (TFLO). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

ZCBF

• 1D: -0.59%
• 1M: -1.29%
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

TFLO

• 1D: 0.02%
• 1M: 0.29%
• YTD: 1.61%
• 6M: 1.88%
• 1Y: 3.97%
• 3Y*: 4.74%
• 5Y*: 3.64%
• 10Y*: 2.36%

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

ZCBF vs. TFLO - Yearly Performance Comparison

	2026 (YTD)
ZCBF Global X Zero Coupon Bond 2034 ETF	-1.01%
TFLO iShares Treasury Floating Rate Bond ETF	1.55%

Correlation

The correlation between ZCBF and TFLO is -0.10, 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 (All Time) Calculated using the full available price history since Jan 8, 2026	-0.10

Return for Risk

ZCBF vs. TFLO — Risk / Return Rank

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

TFLO

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

ZCBF vs. TFLO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Global X Zero Coupon Bond 2034 ETF (ZCBF) and iShares Treasury Floating Rate Bond ETF (TFLO). 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.

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

Sharpe Ratios by Period

	ZCBF	TFLO	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	—	14.09	—
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	10.30	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	5.19	—
Sharpe Ratio (All Time) Calculated using the full available price history	-0.42	0.99	-1.41

Drawdowns

ZCBF vs. TFLO - Drawdown Comparison

The maximum ZCBF drawdown since its inception was -4.66%, smaller than the maximum TFLO drawdown of -5.01%. Use the drawdown chart below to compare losses from any high point for ZCBF and TFLO.

Drawdown Indicators

	ZCBF	TFLO	Difference
Max Drawdown Largest peak-to-trough decline	-4.66%	-5.01%	+0.35%
Max Drawdown (1Y) Largest decline over 1 year	—	-0.02%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-0.04%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-0.13%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-0.16%	—
Current Drawdown Current decline from peak	-3.67%	0.00%	-3.67%
Average Drawdown Average peak-to-trough decline	-1.85%	-0.10%	-1.75%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.00%	—

Volatility

Volatility by Period

	ZCBF	TFLO	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.07%	—
Volatility (6M) Calculated over the trailing 6-month period	—	0.20%	—
Volatility (1Y) Calculated over the trailing 1-year period	5.78%	0.28%	+5.50%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.78%	0.35%	+5.43%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.78%	0.46%	+5.32%

ZCBF vs. TFLO - Expense Ratio Comparison

ZCBF has a 0.07% expense ratio, which is lower than TFLO's 0.15% 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

ZCBF vs. TFLO - Dividend Comparison

ZCBF's dividend yield for the trailing twelve months is around 1.70%, less than TFLO's 3.90% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
TFLO iShares Treasury Floating Rate Bond ETF	3.90%	4.16%	5.21%	4.88%	1.68%	0.00%	0.36%	2.08%	1.65%	0.86%	0.31%	0.15%
ZCBF Global X Zero Coupon Bond 2034 ETF	1.70%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both ZCBF and TFLO in my portfolio?

ZCBF and TFLO have a correlation of -0.10, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, ZCBF or TFLO?

On fees, ZCBF is cheaper at 0.07% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, ZCBF or TFLO?

ZCBF is cheaper with a 0.07% expense ratio, compared with 0.15% for TFLO.

Which ETF pays a higher dividend yield, ZCBF or TFLO?

TFLO has the higher dividend yield at 3.90%, compared with 1.70% for ZCBF.

What is the main difference between ZCBF and TFLO?

ZCBF tracks FTSE Zero Coupon U.S. Treasury STRIPS 2034 Maturity Index, while TFLO tracks Bloomberg U.S. Treasury Floating Rate Index. They also come from different issuers: Global X and iShares. Their fees differ too: 0.07% for ZCBF and 0.15% for TFLO.