TAGG vs. IBGA

Last updated Jun 4, 2026

TAGG (T. Rowe Price QM U.S. Bond ETF) and IBGA (iShares iBonds Dec 2044 Term Treasury ETF) are both Intermediate Core Bond funds. TAGG is actively managed, while IBGA is passively managed. Over the past year, TAGG returned 5.22% vs 5.33% for IBGA. Their correlation of 0.91 suggests significant overlap in exposure. TAGG charges 0.08%/yr vs 0.07%/yr for IBGA.

Performance

TAGG vs. IBGA - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in T. Rowe Price QM U.S. Bond ETF (TAGG) and iShares iBonds Dec 2044 Term Treasury ETF (IBGA). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, TAGG achieves a 0.18% return, which is significantly higher than IBGA's -0.37% return.

TAGG

• 1D: -0.17%
• 1M: 0.18%
• YTD: 0.18%
• 6M: 0.16%
• 1Y: 5.22%
• 3Y*: 4.26%
• 5Y*: —
• 10Y*: —

IBGA

• 1D: -0.41%
• 1M: 0.62%
• YTD: -0.37%
• 6M: -1.42%
• 1Y: 5.33%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

TAGG vs. IBGA - Yearly Performance Comparison

	2026 (YTD)	2025	2024
TAGG T. Rowe Price QM U.S. Bond ETF	0.18%	7.40%	1.81%
IBGA iShares iBonds Dec 2044 Term Treasury ETF	-0.37%	6.09%	-1.41%

Correlation

The correlation between TAGG and IBGA is 0.91, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.91
Correlation (All Time) Calculated using the full available price history since Jun 13, 2024	0.91

The correlation between TAGG and IBGA has been stable across timeframes, ranging from 0.91 to 0.91 - a consistent structural relationship.

Return for Risk

TAGG vs. IBGA — Risk / Return Rank

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

TAGG

TAGG Risk / Return Rank: 36
TAGG Sharpe Ratio Rank: 39
TAGG Sortino Ratio Rank: 40
TAGG Omega Ratio Rank: 38
TAGG Calmar Ratio Rank: 33
TAGG Martin Ratio Rank: 32

IBGA

IBGA Risk / Return Rank: 20
IBGA Sharpe Ratio Rank: 20
IBGA Sortino Ratio Rank: 20
IBGA Omega Ratio Rank: 19
IBGA Calmar Ratio Rank: 20
IBGA Martin Ratio Rank: 20

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.

TAGG vs. IBGA - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for T. Rowe Price QM U.S. Bond ETF (TAGG) and iShares iBonds Dec 2044 Term Treasury ETF (IBGA). 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.

	TAGG	IBGA	Difference
Sharpe ratio: Return per unit of total volatility	1.37	0.65	+0.72
Sortino ratio: Return per unit of downside risk	2.04	0.99	+1.05
Omega ratio: Gain probability vs. loss probability	1.25	1.11	+0.14
Calmar ratio: Return relative to maximum drawdown	1.64	0.81	+0.83
Martin ratio: Return relative to average drawdown	4.86	2.23	+2.63
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

TAGG vs. IBGA - Sharpe Ratio Comparison

The current TAGG Sharpe Ratio is 1.37, which is higher than the IBGA Sharpe Ratio of 0.65. The chart below compares the historical Sharpe Ratios of TAGG and IBGA, 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

	TAGG	IBGA	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.37	0.65	+0.72
Sharpe Ratio (All Time) Calculated using the full available price history	0.04	0.22	-0.18

Drawdowns

TAGG vs. IBGA - Drawdown Comparison

The maximum TAGG drawdown since its inception was -17.26%, which is greater than IBGA's maximum drawdown of -11.69%. Use the drawdown chart below to compare losses from any high point for TAGG and IBGA.

Drawdown Indicators

	TAGG	IBGA	Difference
Max Drawdown Largest peak-to-trough decline	-17.26%	-11.69%	-5.57%
Max Drawdown (1Y) Largest decline over 1 year	-3.19%	-6.60%	+3.41%
Max Drawdown (3Y) Largest decline over 3 years	-6.40%	—	—
Current Drawdown Current decline from peak	-2.03%	-4.67%	+2.64%
Average Drawdown Average peak-to-trough decline	-6.87%	-5.05%	-1.82%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.08%	2.40%	-1.32%

Volatility

TAGG vs. IBGA - Volatility Comparison

The current volatility for T. Rowe Price QM U.S. Bond ETF (TAGG) is 1.19%, while iShares iBonds Dec 2044 Term Treasury ETF (IBGA) has a volatility of 2.59%. This indicates that TAGG experiences smaller price fluctuations and is considered to be less risky than IBGA based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	TAGG	IBGA	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.19%	2.59%	-1.40%
Volatility (6M) Calculated over the trailing 6-month period	2.69%	5.68%	-2.99%
Volatility (1Y) Calculated over the trailing 1-year period	3.83%	8.21%	-4.38%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.53%	9.86%	-3.33%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	6.53%	9.86%	-3.33%

TAGG vs. IBGA - Expense Ratio Comparison

TAGG has a 0.08% expense ratio, which is higher than IBGA's 0.07% 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

TAGG vs. IBGA - Dividend Comparison

TAGG's dividend yield for the trailing twelve months is around 4.58%, less than IBGA's 4.66% yield.

Position	TTM	2025	2024	2023	2022	2021
IBGA iShares iBonds Dec 2044 Term Treasury ETF	4.66%	4.49%	2.03%	0.00%	0.00%	0.00%
TAGG T. Rowe Price QM U.S. Bond ETF	4.58%	4.36%	4.36%	3.48%	3.67%	0.33%

Frequently Asked Questions

Can I hold both TAGG and IBGA in my portfolio?

With a correlation of 0.91, TAGG and IBGA move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, TAGG or IBGA?

IBGA has higher volatility (2.59%) compared to TAGG (1.19%). In terms of maximum drawdown, TAGG dropped -17.26% vs IBGA's -11.69%.

Which ETF is better, TAGG or IBGA?

On 1-year performance, IBGA leads with 5.33% vs 5.22% for TAGG. On fees, IBGA is cheaper at 0.07% per year. On volatility, TAGG has been the lower-risk option at 1.19%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, TAGG or IBGA?

Over the 1-year period, IBGA has performed better with a 5.33% return vs 5.22%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, TAGG or IBGA?

IBGA is cheaper with a 0.07% expense ratio, compared with 0.08% for TAGG.

Which ETF pays a higher dividend yield, TAGG or IBGA?

IBGA has the higher dividend yield at 4.66%, compared with 4.58% for TAGG.

What is the main difference between TAGG and IBGA?

They also come from different issuers: T. Rowe Price and iShares. Their fees differ too: 0.08% for TAGG and 0.07% for IBGA.

Which has better risk-adjusted returns?

TAGG currently has the higher Sharpe Ratio (1.37 vs 0.65), 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.