ACBPX vs. FTHRX

Last updated Aug 1, 2026

ACBPX (American Century Diversified Bond Fund) and FTHRX (Fidelity Intermediate Bond Fund) are both Intermediate Core Bond funds. Over the past 10 years, ACBPX returned 1.13%/yr vs 1.87%/yr for FTHRX. Their correlation of 0.89 means they have usually moved in the same direction. ACBPX charges 0.39%/yr vs 0.45%/yr for FTHRX.

Performance

ACBPX vs. FTHRX - Performance Comparison

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

Returns By Period

In the year-to-date period, ACBPX achieves a -0.72% return, which is significantly lower than FTHRX's -0.23% return. Over the past 10 years, ACBPX has underperformed FTHRX with an annualized return of 1.13%, while FTHRX has yielded a comparatively higher 1.87% annualized return.

ACBPX

• 1D: 0.00%
• 1M: -1.31%
• 6M: -1.00%
• YTD: -0.72%
• 1Y: 1.95%
• 3Y*: 3.38%
• 5Y*: -0.89%
• 10Y*: 1.13%
• ALL TIME*: 2.47%

FTHRX

• 1D: 0.10%
• 1M: -0.59%
• 6M: -0.34%
• YTD: -0.23%
• 1Y: 1.82%
• 3Y*: 4.38%
• 5Y*: 0.81%
• 10Y*: 1.87%
• ALL TIME*: 3.83%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
ACBPX American Century Diversified Bond Fund	$0.00	$0.00	$0.00
FTHRX Fidelity Intermediate Bond Fund	$0.00	$0.00	$0.00

ACBPX vs. FTHRX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ACBPX American Century Diversified Bond Fund	-0.72%	7.42%	0.80%	4.66%	-14.28%	-0.65%	8.26%	8.59%	-1.25%	3.49%
FTHRX Fidelity Intermediate Bond Fund	-0.23%	6.89%	3.25%	5.55%	-9.17%	-1.60%	7.06%	7.20%	0.52%	2.31%

Correlation

The correlation between ACBPX and FTHRX is 0.93, meaning they have usually moved in the same direction, including during past declines.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.93
Correlation (3Y) Balances recent behavior with more history.	0.92
Correlation (5Y) Shows whether the relationship held over a longer period.	0.94
Correlation (10Y) Provides a long-term view across more market conditions.	0.92
Correlation (All Time) Calculated using the full available price history since Mar 18, 1993	0.89

The correlation between ACBPX and FTHRX has been stable across timeframes, ranging from 0.89 to 0.94 - a consistent structural relationship.

Return for Risk

ACBPX vs. FTHRX — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

ACBPX

ACBPX Risk / Return Rank: 21
ACBPX Sharpe Ratio Rank: 23
ACBPX Sortino Ratio Rank: 22
ACBPX Omega Ratio Rank: 21
ACBPX Calmar Ratio Rank: 22
ACBPX Martin Ratio Rank: 19

FTHRX

FTHRX Risk / Return Rank: 32
FTHRX Sharpe Ratio Rank: 34
FTHRX Sortino Ratio Rank: 35
FTHRX Omega Ratio Rank: 33
FTHRX Calmar Ratio Rank: 32
FTHRX Martin Ratio Rank: 24

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

ACBPX vs. FTHRX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Century Diversified Bond Fund (ACBPX) and Fidelity Intermediate Bond Fund (FTHRX). 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	FTHRX	Difference
Sharpe ratio: Return per unit of total volatility	0.85	1.04	-0.18
Sortino ratio: Return per unit of downside risk	1.28	1.57	-0.29
Omega ratio: Gain probability vs. loss probability	1.15	1.19	-0.04
Calmar ratio: Return relative to maximum drawdown	1.11	1.35	-0.24
Martin ratio: Return relative to average drawdown	2.76	3.34	-0.57

ACBPX vs. FTHRX - Sharpe Ratio Comparison

The current ACBPX Sharpe Ratio is 0.85, which is comparable to the FTHRX Sharpe Ratio of 1.04. The chart below compares the historical Sharpe Ratios of ACBPX and FTHRX, 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. FTHRX - Drawdown Comparison

The maximum ACBPX drawdown since its inception was -18.99%, roughly equal to the maximum FTHRX drawdown of -19.01%. Use the drawdown chart below to compare losses from any high point for ACBPX and FTHRX.

Drawdown Indicators

	ACBPX	FTHRX	Difference
Max Drawdown Largest peak-to-trough decline	-18.99%	-19.01%	+0.02%
Max Drawdown (1Y) Largest decline over 1 year	-2.93%	-2.11%	-0.82%
Max Drawdown (3Y) Largest decline over 3 years	-5.77%	-2.50%	-3.27%
Max Drawdown (5Y) Largest decline over 5 years	-18.99%	-13.18%	-5.81%
Max Drawdown (10Y) Largest decline over 10 years	-18.99%	-13.25%	-5.74%
Current Drawdown Current decline from peak	-4.58%	-1.46%	-3.12%
Average Drawdown Average peak-to-trough decline	-3.37%	-3.06%	-0.31%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.17%	0.85%	+0.32%

Volatility

ACBPX vs. FTHRX - Volatility Comparison

American Century Diversified Bond Fund (ACBPX) has a higher volatility of 0.90% compared to Fidelity Intermediate Bond Fund (FTHRX) at 0.73%. This indicates that ACBPX's price experiences larger fluctuations and is considered to be riskier than FTHRX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ACBPX	FTHRX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.90%	0.73%	+0.17%
Volatility (6M) Calculated over the trailing 6-month period	3.03%	2.18%	+0.85%
Volatility (1Y) Calculated over the trailing 1-year period	3.83%	2.74%	+1.09%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.14%	4.04%	+2.10%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.04%	3.40%	+1.64%

ACBPX vs. FTHRX - Expense Ratio Comparison

ACBPX has a 0.39% expense ratio, which is lower than FTHRX's 0.45% expense ratio.

Dividends

ACBPX vs. FTHRX - Dividend Comparison

ACBPX's dividend yield for the trailing twelve months is around 4.23%, more than FTHRX's 3.41% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ACBPX American Century Diversified Bond Fund	4.23%	4.60%	3.89%	3.32%	2.07%	2.60%	4.57%	2.48%	2.83%	2.30%	2.63%	2.88%
FTHRX Fidelity Intermediate Bond Fund	3.41%	3.59%	3.49%	2.94%	1.55%	1.53%	4.16%	2.49%	2.48%	2.20%	2.63%	2.13%

Frequently Asked Questions

Can I hold both ACBPX and FTHRX in my portfolio?

With a correlation of 0.93, ACBPX and FTHRX 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, ACBPX or FTHRX?

ACBPX has higher volatility (0.90%) compared to FTHRX (0.73%). In terms of maximum drawdown, ACBPX dropped -18.99% vs FTHRX's -19.01%.

Which has better risk-adjusted returns?

FTHRX currently has the higher Sharpe Ratio (1.04 vs 0.85), 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.