AGG vs. BTOT
AGG (iShares Core U.S. Aggregate Bond ETF) and BTOT (iShares Total USD Fixed Income Market ETF) are both Total Bond Market funds from iShares - AGG tracks the Bloomberg U.S. Aggregate Bond Index while BTOT tracks the Bloomberg US Total Fixed Income Market Index. Both are passively managed. With a 0.97 correlation, they move nearly in lockstep. AGG charges 0.03%/yr vs 0.09%/yr for BTOT.
Performance
AGG vs. BTOT - Performance Comparison
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Returns By Period
In the year-to-date period, AGG achieves a 1.02% return, which is significantly lower than BTOT's 1.10% return.
AGG
- 1D
- 0.06%
- 1M
- 0.87%
- YTD
- 1.02%
- 6M
- 0.88%
- 1Y
- 4.48%
- 3Y*
- 4.11%
- 5Y*
- 0.22%
- 10Y*
- 1.55%
BTOT
- 1D
- 0.06%
- 1M
- 0.87%
- YTD
- 1.10%
- 6M
- 1.03%
- 1Y
- —
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
AGG vs. BTOT - Yearly Performance Comparison
| 2026 (YTD) | 2025 | |
|---|---|---|
AGG iShares Core U.S. Aggregate Bond ETF | 1.02% | 0.11% |
BTOT iShares Total USD Fixed Income Market ETF | 1.10% | 0.12% |
Correlation
The correlation between AGG and BTOT is 0.97 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.
| Correlation | |
|---|---|
Correlation (All Time) Calculated using the full available price history since Dec 11, 2025 | 0.97 |
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Return for Risk
AGG vs. BTOT — Risk / Return Rank
AGG
BTOT
Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.
AGG vs. BTOT - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares Core U.S. Aggregate Bond ETF (AGG) and iShares Total USD Fixed Income Market ETF (BTOT). 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.
| AGG | BTOT | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | — | — | |
| Sortino ratioReturn per unit of downside risk | — | — | |
| Omega ratioGain probability vs. loss probability | 1.21 | — | — |
| Calmar ratioReturn relative to maximum drawdown | 1.63 | — | — |
| Martin ratioReturn relative to average drawdown | 4.68 | — | — |
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Drawdowns
AGG vs. BTOT - Drawdown Comparison
The maximum AGG drawdown since its inception was -18.43%, which is greater than BTOT's maximum drawdown of -2.36%. Use the drawdown chart below to compare losses from any high point for AGG and BTOT.
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Drawdown Indicators
| AGG | BTOT | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -18.43% | -2.36% | -16.07% |
Max Drawdown (1Y)Largest decline over 1 year | -2.76% | — | — |
Max Drawdown (3Y)Largest decline over 3 years | -6.11% | — | — |
Max Drawdown (5Y)Largest decline over 5 years | -17.82% | — | — |
Max Drawdown (10Y)Largest decline over 10 years | -18.43% | — | — |
Current DrawdownCurrent decline from peak | -1.39% | -0.48% | -0.91% |
Average DrawdownAverage peak-to-trough decline | -2.71% | -0.79% | -1.92% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.96% | — | — |
Volatility
AGG vs. BTOT - Volatility Comparison
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Volatility by Period
| AGG | BTOT | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.17% | — | — |
Volatility (6M)Calculated over the trailing 6-month period | 2.87% | — | — |
Volatility (1Y)Calculated over the trailing 1-year period | 3.82% | 3.72% | +0.10% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.10% | 3.72% | +2.38% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.41% | 3.72% | +1.69% |
AGG vs. BTOT - Expense Ratio Comparison
AGG has a 0.03% expense ratio, which is lower than BTOT's 0.09% 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
AGG vs. BTOT - Dividend Comparison
AGG's dividend yield for the trailing twelve months is around 3.96%, more than BTOT's 2.11% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
AGG iShares Core U.S. Aggregate Bond ETF | 3.96% | 3.89% | 3.74% | 3.13% | 2.39% | 1.77% | 2.14% | 2.70% | 2.72% | 2.32% | 2.39% | 2.45% |
BTOT iShares Total USD Fixed Income Market ETF | 2.11% | 0.22% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
Frequently Asked Questions
With a correlation of 0.97, AGG and BTOT 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.
On fees, AGG is cheaper at 0.03% per year. The better choice depends on whether you care most about return, fees, risk, or income.
AGG is cheaper with a 0.03% expense ratio, compared with 0.09% for BTOT.
AGG has the higher dividend yield at 3.96%, compared with 2.11% for BTOT.
AGG tracks Bloomberg U.S. Aggregate Bond Index, while BTOT tracks Bloomberg US Total Fixed Income Market Index. Their fees differ too: 0.03% for AGG and 0.09% for BTOT.
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