FUAMX vs. BTTRX

Last updated Jun 4, 2026

FUAMX (Fidelity Intermediate Treasury Bond Index Fund) and BTTRX (American Century Zero Coupon 2025 Fund) are both Government Bonds funds. A 0.80 correlation means they provide meaningful diversification when combined. FUAMX charges 0.03%/yr vs 0.54%/yr for BTTRX.

Performance

FUAMX vs. BTTRX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity Intermediate Treasury Bond Index Fund (FUAMX) and American Century Zero Coupon 2025 Fund (BTTRX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

FUAMX

• 1D: 0.10%
• 1M: 0.10%
• YTD: -0.27%
• 6M: -0.64%
• 1Y: 4.20%
• 3Y*: 3.20%
• 5Y*: -0.36%
• 10Y*: —

BTTRX

• 1D: —
• 1M: —
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

FUAMX vs. BTTRX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FUAMX Fidelity Intermediate Treasury Bond Index Fund	-0.27%	8.00%	0.40%	4.08%	-13.06%	-3.19%	8.86%	7.25%	1.25%	-0.35%
BTTRX American Century Zero Coupon 2025 Fund	0.00%	2.79%	9.54%	7.82%	-7.63%	-2.65%	17.73%	11.43%	5.77%	-3.69%

Correlation

The correlation between FUAMX and BTTRX is 0.10, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.10
Correlation (3Y) Calculated over the trailing 3-year period	0.64
Correlation (5Y) Calculated over the trailing 5-year period	0.79
Correlation (All Time) Calculated using the full available price history since Oct 20, 2017	0.80

Over the past year, the correlation between FUAMX and BTTRX has dropped to 0.10 - well below their long-term average of 0.80, suggesting their price drivers have been diverging.

Return for Risk

FUAMX vs. BTTRX — Risk / Return Rank

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

FUAMX

FUAMX Risk / Return Rank: 12
FUAMX Sharpe Ratio Rank: 12
FUAMX Sortino Ratio Rank: 13
FUAMX Omega Ratio Rank: 11
FUAMX Calmar Ratio Rank: 11
FUAMX Martin Ratio Rank: 11

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.

FUAMX vs. BTTRX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Intermediate Treasury Bond Index Fund (FUAMX) and American Century Zero Coupon 2025 Fund (BTTRX). 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.

	FUAMX	BTTRX	Difference
Sharpe ratio Return per unit of total volatility	0.95	—	—
Sortino ratio Return per unit of downside risk	1.44	—	—
Omega ratio Gain probability vs. loss probability	1.17	—	—
Calmar ratio Return relative to maximum drawdown	1.11	—	—
Martin ratio Return relative to average drawdown	3.27	—	—
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

Sharpe Ratios by Period

	FUAMX	BTTRX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.95	—	—
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.05	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.22	—	—

Drawdowns

Drawdown Indicators

	FUAMX	BTTRX	Difference
Max Drawdown Largest peak-to-trough decline	-20.25%	—	—
Max Drawdown (1Y) Largest decline over 1 year	-3.72%	—	—
Max Drawdown (3Y) Largest decline over 3 years	-6.07%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-18.27%	—	—
Current Drawdown Current decline from peak	-6.69%	—	—
Average Drawdown Average peak-to-trough decline	-7.32%	—	—
Ulcer Index Depth and duration of drawdowns from previous peaks	1.26%	—	—

Volatility

Volatility by Period

	FUAMX	BTTRX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.44%	—	—
Volatility (6M) Calculated over the trailing 6-month period	3.09%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	4.34%	—	—
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.63%	—	—
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.85%	—	—

FUAMX vs. BTTRX - Expense Ratio Comparison

FUAMX has a 0.03% expense ratio, which is lower than BTTRX's 0.54% expense ratio.

Dividends

FUAMX vs. BTTRX - Dividend Comparison

FUAMX's dividend yield for the trailing twelve months is around 3.75%, while BTTRX has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BTTRX American Century Zero Coupon 2025 Fund	0.00%	0.00%	4.96%	4.00%	3.47%	3.27%	7.69%	3.90%	5.25%	1.05%	3.42%	2.85%
FUAMX Fidelity Intermediate Treasury Bond Index Fund	3.75%	3.52%	3.58%	2.20%	1.24%	1.76%	2.90%	2.16%	2.23%	0.49%	0.00%	0.00%

Frequently Asked Questions

Can I hold both FUAMX and BTTRX in my portfolio?

FUAMX and BTTRX have a correlation of 0.10, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.