BAGIX vs. BCOSX

Last updated Jun 4, 2026

BAGIX (Baird Aggregate Bond Fund Class I) and BCOSX (Baird Core Plus Bond Fund) are both mutual funds - BAGIX is a Total Bond Market fund managed by Baird, while BCOSX is a Intermediate Core-Plus Bond fund managed by Baird. Over the past 10 years, BAGIX returned 1.99%/yr vs 2.15%/yr for BCOSX. With a 0.96 correlation, they move nearly in lockstep. BAGIX charges 0.30%/yr vs 0.55%/yr for BCOSX.

Performance

BAGIX vs. BCOSX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Baird Aggregate Bond Fund Class I (BAGIX) and Baird Core Plus Bond Fund (BCOSX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

The year-to-date returns for both stocks are quite close, with BAGIX having a 0.42% return and BCOSX slightly lower at 0.41%. Over the past 10 years, BAGIX has underperformed BCOSX with an annualized return of 1.99%, while BCOSX has yielded a comparatively higher 2.15% annualized return.

BAGIX

• 1D: 0.00%
• 1M: 0.57%
• YTD: 0.42%
• 6M: 0.37%
• 1Y: 5.47%
• 3Y*: 4.52%
• 5Y*: 0.45%
• 10Y*: 1.99%

BCOSX

• 1D: 0.09%
• 1M: 0.52%
• YTD: 0.41%
• 6M: 0.42%
• 1Y: 5.39%
• 3Y*: 4.66%
• 5Y*: 0.58%
• 10Y*: 2.15%

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

BAGIX vs. BCOSX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BAGIX Baird Aggregate Bond Fund Class I	0.42%	7.37%	1.85%	6.42%	-13.35%	-1.46%	8.63%	9.48%	-0.31%	4.20%
BCOSX Baird Core Plus Bond Fund	0.41%	7.22%	2.26%	6.60%	-13.09%	-1.23%	8.59%	9.69%	-0.74%	4.47%

Correlation

The correlation between BAGIX and BCOSX 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 (1Y) Calculated over the trailing 1-year period	0.97
Correlation (3Y) Calculated over the trailing 3-year period	0.98
Correlation (5Y) Calculated over the trailing 5-year period	0.98
Correlation (10Y) Calculated over the trailing 10-year period	0.97
Correlation (All Time) Calculated using the full available price history since Oct 2, 2000	0.96

The correlation between BAGIX and BCOSX has been stable across timeframes, ranging from 0.96 to 0.98 - a consistent structural relationship.

Return for Risk

BAGIX vs. BCOSX — Risk / Return Rank

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

BAGIX

BAGIX Risk / Return Rank: 26
BAGIX Sharpe Ratio Rank: 26
BAGIX Sortino Ratio Rank: 28
BAGIX Omega Ratio Rank: 25
BAGIX Calmar Ratio Rank: 29
BAGIX Martin Ratio Rank: 24

BCOSX

BCOSX Risk / Return Rank: 28
BCOSX Sharpe Ratio Rank: 28
BCOSX Sortino Ratio Rank: 30
BCOSX Omega Ratio Rank: 27
BCOSX Calmar Ratio Rank: 31
BCOSX Martin Ratio Rank: 25

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.

BAGIX vs. BCOSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Baird Aggregate Bond Fund Class I (BAGIX) and Baird Core Plus Bond Fund (BCOSX). 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.

	BAGIX	BCOSX	Difference
Sharpe ratio: Return per unit of total volatility	1.45	1.50	-0.05
Sortino ratio: Return per unit of downside risk	2.18	2.25	-0.07
Omega ratio: Gain probability vs. loss probability	1.26	1.27	-0.01
Calmar ratio: Return relative to maximum drawdown	2.02	2.10	-0.08
Martin ratio: Return relative to average drawdown	6.02	6.18	-0.16
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BAGIX vs. BCOSX - Sharpe Ratio Comparison

The current BAGIX Sharpe Ratio is 1.45, which is comparable to the BCOSX Sharpe Ratio of 1.50. The chart below compares the historical Sharpe Ratios of BAGIX and BCOSX, 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

	BAGIX	BCOSX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.45	1.50	-0.05
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.08	0.10	-0.03
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.41	0.46	-0.05
Sharpe Ratio (All Time) Calculated using the full available price history	0.97	1.02	-0.05

Drawdowns

BAGIX vs. BCOSX - Drawdown Comparison

The maximum BAGIX drawdown since its inception was -18.62%, roughly equal to the maximum BCOSX drawdown of -18.39%. Use the drawdown chart below to compare losses from any high point for BAGIX and BCOSX.

Drawdown Indicators

	BAGIX	BCOSX	Difference
Max Drawdown Largest peak-to-trough decline	-18.62%	-18.39%	-0.23%
Max Drawdown (1Y) Largest decline over 1 year	-2.72%	-2.58%	-0.14%
Max Drawdown (3Y) Largest decline over 3 years	-6.05%	-5.80%	-0.25%
Max Drawdown (5Y) Largest decline over 5 years	-18.60%	-18.39%	-0.21%
Max Drawdown (10Y) Largest decline over 10 years	-18.62%	-18.39%	-0.23%
Current Drawdown Current decline from peak	-1.36%	-1.24%	-0.12%
Average Drawdown Average peak-to-trough decline	-2.35%	-2.30%	-0.05%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.91%	0.87%	+0.04%

Volatility

BAGIX vs. BCOSX - Volatility Comparison

Baird Aggregate Bond Fund Class I (BAGIX) and Baird Core Plus Bond Fund (BCOSX) have volatilities of 1.26% and 1.23%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BAGIX	BCOSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.26%	1.23%	+0.03%
Volatility (6M) Calculated over the trailing 6-month period	2.63%	2.55%	+0.08%
Volatility (1Y) Calculated over the trailing 1-year period	3.80%	3.62%	+0.18%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.92%	5.62%	+0.30%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.89%	4.65%	+0.24%

BAGIX vs. BCOSX - Expense Ratio Comparison

BAGIX has a 0.30% expense ratio, which is lower than BCOSX's 0.55% expense ratio.

Dividends

BAGIX vs. BCOSX - Dividend Comparison

BAGIX's dividend yield for the trailing twelve months is around 4.24%, more than BCOSX's 3.87% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BAGIX Baird Aggregate Bond Fund Class I	4.24%	4.12%	4.03%	3.47%	2.70%	2.00%	3.39%	2.75%	2.87%	2.54%	2.25%	2.46%
BCOSX Baird Core Plus Bond Fund	3.87%	3.75%	3.68%	3.17%	2.69%	2.57%	3.11%	2.60%	2.75%	2.47%	2.27%	2.49%

Frequently Asked Questions

Can I hold both BAGIX and BCOSX in my portfolio?

With a correlation of 0.97, BAGIX and BCOSX 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, BAGIX or BCOSX?

BAGIX has higher volatility (1.26%) compared to BCOSX (1.23%). In terms of maximum drawdown, BAGIX dropped -18.62% vs BCOSX's -18.39%.

Which has better risk-adjusted returns?

BCOSX currently has the higher Sharpe Ratio (1.50 vs 1.45), 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.