BBGSX vs. AGG

Last updated Jun 9, 2026

BBGSX (Bridge Builder Small/Mid Cap Growth Fund) and AGG (iShares Core U.S. Aggregate Bond ETF) are both funds - BBGSX is a Mid Cap Growth Equities fund managed by Bridge Builder, while AGG is a Total Bond Market fund tracking the Bloomberg U.S. Aggregate Bond Index. Over the past 10 years, BBGSX returned 10.27%/yr vs 1.52%/yr for AGG. At a 0.08 correlation, their price movements are largely independent. BBGSX charges 0.38%/yr vs 0.03%/yr for AGG.

Performance

BBGSX vs. AGG - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Bridge Builder Small/Mid Cap Growth Fund (BBGSX) and iShares Core U.S. Aggregate Bond ETF (AGG). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BBGSX achieves a 5.95% return, which is significantly higher than AGG's -0.08% return. Over the past 10 years, BBGSX has outperformed AGG with an annualized return of 10.27%, while AGG has yielded a comparatively lower 1.52% annualized return.

BBGSX

• 1D: -3.52%
• 1M: 0.41%
• YTD: 5.95%
• 6M: -2.82%
• 1Y: 7.20%
• 3Y*: 10.43%
• 5Y*: 2.57%
• 10Y*: 10.27%

AGG

• 1D: 0.00%
• 1M: -0.69%
• YTD: -0.08%
• 6M: 0.26%
• 1Y: 4.97%
• 3Y*: 3.88%
• 5Y*: -0.03%
• 10Y*: 1.52%

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

BBGSX vs. AGG - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BBGSX Bridge Builder Small/Mid Cap Growth Fund	5.95%	0.99%	14.47%	20.98%	-29.84%	16.57%	34.41%	29.01%	-2.18%	21.47%
AGG iShares Core U.S. Aggregate Bond ETF	-0.08%	7.19%	1.31%	5.65%	-13.02%	-1.77%	7.48%	8.46%	0.09%	3.55%

Correlation

The correlation between BBGSX and AGG is 0.36, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.36
Correlation (3Y) Calculated over the trailing 3-year period	0.25
Correlation (5Y) Calculated over the trailing 5-year period	0.21
Correlation (10Y) Calculated over the trailing 10-year period	0.09
Correlation (All Time) Calculated using the full available price history since Jan 5, 2016	0.08

Over the past year, BBGSX and AGG have become more correlated (0.36) than their long-term average of 0.08, meaning their price movements have been converging.

Return for Risk

BBGSX vs. AGG — Risk / Return Rank

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

BBGSX

BBGSX Risk / Return Rank: 7
BBGSX Sharpe Ratio Rank: 7
BBGSX Sortino Ratio Rank: 7
BBGSX Omega Ratio Rank: 7
BBGSX Calmar Ratio Rank: 6
BBGSX Martin Ratio Rank: 7

AGG

AGG Risk / Return Rank: 40
AGG Sharpe Ratio Rank: 41
AGG Sortino Ratio Rank: 42
AGG Omega Ratio Rank: 39
AGG Calmar Ratio Rank: 40
AGG Martin Ratio Rank: 38

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.

BBGSX vs. AGG - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Bridge Builder Small/Mid Cap Growth Fund (BBGSX) and iShares Core U.S. Aggregate Bond ETF (AGG). 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.

	BBGSX	AGG	Difference
Sharpe ratio: Return per unit of total volatility	0.46	1.32	-0.85
Sortino ratio: Return per unit of downside risk	0.76	1.94	-1.18
Omega ratio: Gain probability vs. loss probability	1.09	1.23	-0.14
Calmar ratio: Return relative to maximum drawdown	0.50	1.81	-1.31
Martin ratio: Return relative to average drawdown	1.49	5.44	-3.94
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BBGSX vs. AGG - Sharpe Ratio Comparison

The current BBGSX Sharpe Ratio is 0.46, which is lower than the AGG Sharpe Ratio of 1.32. The chart below compares the historical Sharpe Ratios of BBGSX and AGG, 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

	BBGSX	AGG	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.46	1.32	-0.85
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.12	-0.00	+0.12
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.49	0.28	+0.21
Sharpe Ratio (All Time) Calculated using the full available price history	0.51	0.59	-0.08

Drawdowns

BBGSX vs. AGG - Drawdown Comparison

The maximum BBGSX drawdown since its inception was -37.95%, which is greater than AGG's maximum drawdown of -18.43%. Use the drawdown chart below to compare losses from any high point for BBGSX and AGG.

Drawdown Indicators

	BBGSX	AGG	Difference
Max Drawdown Largest peak-to-trough decline	-37.95%	-18.43%	-19.52%
Max Drawdown (1Y) Largest decline over 1 year	-16.72%	-2.76%	-13.96%
Max Drawdown (3Y) Largest decline over 3 years	-26.11%	-6.11%	-20.00%
Max Drawdown (5Y) Largest decline over 5 years	-37.95%	-17.82%	-20.13%
Max Drawdown (10Y) Largest decline over 10 years	-37.95%	-18.43%	-19.52%
Current Drawdown Current decline from peak	-4.43%	-2.47%	-1.96%
Average Drawdown Average peak-to-trough decline	-9.56%	-2.71%	-6.85%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.50%	0.92%	+4.58%

Volatility

BBGSX vs. AGG - Volatility Comparison

Bridge Builder Small/Mid Cap Growth Fund (BBGSX) has a higher volatility of 5.81% compared to iShares Core U.S. Aggregate Bond ETF (AGG) at 1.29%. This indicates that BBGSX's price experiences larger fluctuations and is considered to be riskier than AGG based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BBGSX	AGG	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.81%	1.29%	+4.52%
Volatility (6M) Calculated over the trailing 6-month period	14.48%	2.77%	+11.71%
Volatility (1Y) Calculated over the trailing 1-year period	18.05%	3.80%	+14.25%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.74%	6.09%	+15.65%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.99%	5.41%	+15.58%

BBGSX vs. AGG - Expense Ratio Comparison

BBGSX has a 0.38% expense ratio, which is higher than AGG's 0.03% expense ratio.

Dividends

BBGSX vs. AGG - Dividend Comparison

BBGSX has not paid dividends to shareholders, while AGG's dividend yield for the trailing twelve months is around 4.00%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AGG iShares Core U.S. Aggregate Bond ETF	4.00%	3.89%	3.74%	3.13%	2.39%	1.77%	2.14%	2.70%	2.72%	2.32%	2.39%	2.45%
BBGSX Bridge Builder Small/Mid Cap Growth Fund	0.00%	0.00%	0.58%	0.32%	0.19%	18.00%	12.59%	4.07%	6.12%	1.09%	0.36%	0.00%

Frequently Asked Questions

Can I hold both BBGSX and AGG in my portfolio?

BBGSX and AGG have a correlation of 0.36, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BBGSX or AGG?

BBGSX has higher volatility (5.81%) compared to AGG (1.29%). In terms of maximum drawdown, BBGSX dropped -37.95% vs AGG's -18.43%.

Which has better risk-adjusted returns?

AGG currently has the higher Sharpe Ratio (1.32 vs 0.46), 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.