GMOC vs. TBIL

Last updated Jun 24, 2026

GMOC (GMO Ultra-Short Income ETF) and TBIL (F/m US Treasury 3 Month Bill ETF) are both Ultrashort Bond funds. GMOC is actively managed, while TBIL is passively managed. At a correlation of -0.10, they often move in opposite directions. GMOC charges 0.20%/yr vs 0.15%/yr for TBIL.

Performance

GMOC vs. TBIL - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in GMO Ultra-Short Income ETF (GMOC) and F/m US Treasury 3 Month Bill ETF (TBIL). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, GMOC achieves a 1.81% return, which is significantly higher than TBIL's 1.69% return.

GMOC

• 1D: 0.00%
• 1M: 0.33%
• YTD: 1.81%
• 6M: 1.97%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

TBIL

• 1D: 0.00%
• 1M: 0.28%
• YTD: 1.69%
• 6M: 1.76%
• 1Y: 3.87%
• 3Y*: 4.60%
• 5Y*: —
• 10Y*: —

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

GMOC vs. TBIL - Yearly Performance Comparison

	2026 (YTD)	2025
GMOC GMO Ultra-Short Income ETF	1.81%	0.70%
TBIL F/m US Treasury 3 Month Bill ETF	1.69%	0.70%

Correlation

The correlation between GMOC and TBIL 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 Oct 28, 2025	-0.10

Return for Risk

GMOC vs. TBIL — Risk / Return Rank

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

GMOC

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

TBIL

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

GMOC vs. TBIL - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for GMO Ultra-Short Income ETF (GMOC) and F/m US Treasury 3 Month Bill ETF (TBIL). 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	GMOC	TBIL	Difference
Sharpe ratio: Return per unit of total volatility	—	13.64	—
Sortino ratio: Return per unit of downside risk	—	57.49	—
Omega ratio: Gain probability vs. loss probability	—	16.91	—
Calmar ratio: Return relative to maximum drawdown	—	193.71	—
Martin ratio: Return relative to average drawdown	—	975.63	—

Drawdowns

GMOC vs. TBIL - Drawdown Comparison

The maximum GMOC drawdown since its inception was -0.14%, which is greater than TBIL's maximum drawdown of -0.10%. Use the drawdown chart below to compare losses from any high point for GMOC and TBIL.

Drawdown Indicators

	GMOC	TBIL	Difference
Max Drawdown Largest peak-to-trough decline	-0.14%	-0.10%	-0.04%
Max Drawdown (1Y) Largest decline over 1 year	—	-0.02%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-0.02%	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-0.01%	-0.00%	-0.01%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.00%	—

Volatility

Volatility by Period

	GMOC	TBIL	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.06%	—
Volatility (6M) Calculated over the trailing 6-month period	—	0.19%	—
Volatility (1Y) Calculated over the trailing 1-year period	0.50%	0.29%	+0.21%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.50%	0.32%	+0.18%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.50%	0.32%	+0.18%

GMOC vs. TBIL - Expense Ratio Comparison

GMOC has a 0.20% expense ratio, which is higher than TBIL's 0.15% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

GMOC vs. TBIL - Dividend Comparison

GMOC's dividend yield for the trailing twelve months is around 2.33%, less than TBIL's 3.81% yield.

Position	TTM	2025	2024	2023	2022
GMOC GMO Ultra-Short Income ETF	2.33%	0.84%	0.00%	0.00%	0.00%
TBIL F/m US Treasury 3 Month Bill ETF	3.81%	4.07%	5.02%	5.00%	1.10%

Frequently Asked Questions

Can I hold both GMOC and TBIL in my portfolio?

GMOC and TBIL 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, GMOC or TBIL?

On fees, TBIL is cheaper at 0.15% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, GMOC or TBIL?

TBIL is cheaper with a 0.15% expense ratio, compared with 0.20% for GMOC.

Which ETF pays a higher dividend yield, GMOC or TBIL?

TBIL has the higher dividend yield at 3.81%, compared with 2.33% for GMOC.

What is the main difference between GMOC and TBIL?

They also come from different issuers: GMO and F/m Investments. Their fees differ too: 0.20% for GMOC and 0.15% for TBIL.