ACBPX vs. BIGRX

Last updated Jun 23, 2026

ACBPX (American Century Diversified Bond Fund) and BIGRX (American Century Disciplined Core Value Fund) are both mutual funds - ACBPX is a Intermediate Core Bond fund managed by American Century, while BIGRX is a Large Cap Value Equities fund managed by American Century. Over the past 10 years, ACBPX returned 1.38%/yr vs 11.35%/yr for BIGRX. At a correlation of -0.09, they often move in opposite directions. ACBPX charges 0.39%/yr vs 0.65%/yr for BIGRX.

Performance

ACBPX vs. BIGRX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Century Diversified Bond Fund (ACBPX) and American Century Disciplined Core Value Fund (BIGRX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ACBPX achieves a 0.35% return, which is significantly lower than BIGRX's 12.02% return. Over the past 10 years, ACBPX has underperformed BIGRX with an annualized return of 1.38%, while BIGRX has yielded a comparatively higher 11.35% annualized return.

ACBPX

• 1D: 0.22%
• 1M: 0.92%
• YTD: 0.35%
• 6M: 0.85%
• 1Y: 4.98%
• 3Y*: 3.72%
• 5Y*: -0.40%
• 10Y*: 1.38%

BIGRX

• 1D: 0.23%
• 1M: 2.08%
• YTD: 12.02%
• 6M: 10.96%
• 1Y: 29.04%
• 3Y*: 16.29%
• 5Y*: 8.77%
• 10Y*: 11.35%

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

ACBPX vs. BIGRX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ACBPX American Century Diversified Bond Fund	0.35%	7.42%	0.80%	4.66%	-14.28%	-0.65%	8.26%	8.59%	-1.25%	3.49%
BIGRX American Century Disciplined Core Value Fund	12.02%	14.85%	13.26%	8.44%	-12.59%	24.22%	11.86%	24.00%	-6.37%	20.63%

Correlation

The correlation between ACBPX and BIGRX is 0.32, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.32
Correlation (3Y) Calculated over the trailing 3-year period	0.23
Correlation (5Y) Calculated over the trailing 5-year period	0.11
Correlation (10Y) Calculated over the trailing 10-year period	-0.04
Correlation (All Time) Calculated using the full available price history since Mar 18, 1993	-0.09

The correlation between ACBPX and BIGRX shifts across timeframes, from -0.09 (all time) to 0.32 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

ACBPX vs. BIGRX — Risk / Return Rank

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

ACBPX

ACBPX Risk / Return Rank: 24
ACBPX Sharpe Ratio Rank: 24
ACBPX Sortino Ratio Rank: 26
ACBPX Omega Ratio Rank: 23
ACBPX Calmar Ratio Rank: 25
ACBPX Martin Ratio Rank: 21

BIGRX

BIGRX Risk / Return Rank: 82
BIGRX Sharpe Ratio Rank: 83
BIGRX Sortino Ratio Rank: 81
BIGRX Omega Ratio Rank: 76
BIGRX Calmar Ratio Rank: 83
BIGRX Martin Ratio Rank: 87

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.

ACBPX vs. BIGRX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Century Diversified Bond Fund (ACBPX) and American Century Disciplined Core Value Fund (BIGRX). 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.

	ACBPX	BIGRX	Difference
Sharpe ratio: Return per unit of total volatility	1.30	2.49	-1.19
Sortino ratio: Return per unit of downside risk	1.98	3.53	-1.55
Omega ratio: Gain probability vs. loss probability	1.23	1.45	-0.22
Calmar ratio: Return relative to maximum drawdown	1.75	3.67	-1.92
Martin ratio: Return relative to average drawdown	4.90	15.35	-10.44

ACBPX vs. BIGRX - Sharpe Ratio Comparison

The current ACBPX Sharpe Ratio is 1.30, which is lower than the BIGRX Sharpe Ratio of 2.49. The chart below compares the historical Sharpe Ratios of ACBPX and BIGRX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

ACBPX vs. BIGRX - Drawdown Comparison

The maximum ACBPX drawdown since its inception was -18.99%, smaller than the maximum BIGRX drawdown of -58.04%. Use the drawdown chart below to compare losses from any high point for ACBPX and BIGRX.

Drawdown Indicators

	ACBPX	BIGRX	Difference
Max Drawdown Largest peak-to-trough decline	-18.99%	-58.04%	+39.05%
Max Drawdown (1Y) Largest decline over 1 year	-2.93%	-7.95%	+5.02%
Max Drawdown (3Y) Largest decline over 3 years	-6.90%	-18.24%	+11.34%
Max Drawdown (5Y) Largest decline over 5 years	-18.99%	-22.19%	+3.20%
Max Drawdown (10Y) Largest decline over 10 years	-18.99%	-32.62%	+13.63%
Current Drawdown Current decline from peak	-3.56%	-1.38%	-2.18%
Average Drawdown Average peak-to-trough decline	-3.37%	-8.99%	+5.62%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.04%	1.90%	-0.86%

Volatility

ACBPX vs. BIGRX - Volatility Comparison

The current volatility for American Century Diversified Bond Fund (ACBPX) is 1.25%, while American Century Disciplined Core Value Fund (BIGRX) has a volatility of 4.32%. This indicates that ACBPX experiences smaller price fluctuations and is considered to be less risky than BIGRX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ACBPX	BIGRX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.25%	4.32%	-3.07%
Volatility (6M) Calculated over the trailing 6-month period	2.93%	8.95%	-6.02%
Volatility (1Y) Calculated over the trailing 1-year period	3.93%	11.69%	-7.76%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.14%	14.98%	-8.84%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.04%	16.86%	-11.82%

ACBPX vs. BIGRX - Expense Ratio Comparison

ACBPX has a 0.39% expense ratio, which is lower than BIGRX's 0.65% expense ratio.

Dividends

ACBPX vs. BIGRX - Dividend Comparison

ACBPX's dividend yield for the trailing twelve months is around 4.57%, less than BIGRX's 8.32% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ACBPX American Century Diversified Bond Fund	4.57%	4.60%	3.89%	3.32%	2.07%	2.60%	4.57%	2.48%	2.83%	2.30%	2.63%	2.88%
BIGRX American Century Disciplined Core Value Fund	8.32%	9.05%	1.32%	1.55%	1.88%	28.04%	16.19%	3.90%	13.40%	9.32%	3.91%	9.22%

Frequently Asked Questions

Can I hold both ACBPX and BIGRX in my portfolio?

ACBPX and BIGRX have a correlation of 0.32, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ACBPX or BIGRX?

BIGRX has higher volatility (4.32%) compared to ACBPX (1.25%). In terms of maximum drawdown, ACBPX dropped -18.99% vs BIGRX's -58.04%.

Which has better risk-adjusted returns?

BIGRX currently has the higher Sharpe Ratio (2.49 vs 1.30), 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.