TBCIX vs. PRULX

Last updated Jun 4, 2026

TBCIX (T. Rowe Price Blue Chip Growth Fund I Class) and PRULX (T. Rowe Price U.S. Treasury Long Term Index Fund) are both mutual funds - TBCIX is a Large Cap Growth Equities fund managed by T. Rowe Price, while PRULX is a Government Bonds fund managed by T. Rowe Price. Over the past 10 years, TBCIX returned 17.93%/yr vs -0.47%/yr for PRULX. At a correlation of -0.08, they often move in opposite directions. TBCIX charges 0.56%/yr vs 0.29%/yr for PRULX.

Performance

TBCIX vs. PRULX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in T. Rowe Price Blue Chip Growth Fund I Class (TBCIX) and T. Rowe Price U.S. Treasury Long Term Index Fund (PRULX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, TBCIX achieves a 5.54% return, which is significantly higher than PRULX's -0.48% return. Over the past 10 years, TBCIX has outperformed PRULX with an annualized return of 17.93%, while PRULX has yielded a comparatively lower -0.47% annualized return.

TBCIX

• 1D: -0.69%
• 1M: 5.17%
• YTD: 5.54%
• 6M: 5.71%
• 1Y: 22.23%
• 3Y*: 29.00%
• 5Y*: 14.09%
• 10Y*: 17.93%

PRULX

• 1D: 0.28%
• 1M: 1.21%
• YTD: -0.48%
• 6M: -1.04%
• 1Y: 6.88%
• 3Y*: -0.10%
• 5Y*: -5.14%
• 10Y*: -0.47%

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

TBCIX vs. PRULX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
TBCIX T. Rowe Price Blue Chip Growth Fund I Class	5.54%	18.94%	48.73%	49.61%	-38.48%	18.30%	34.90%	30.30%	2.13%	36.68%
PRULX T. Rowe Price U.S. Treasury Long Term Index Fund	-0.48%	6.69%	-5.71%	2.90%	-30.45%	-5.22%	18.34%	22.58%	-1.86%	8.23%

Correlation

The correlation between TBCIX and PRULX is 0.13, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.13
Correlation (3Y) Calculated over the trailing 3-year period	0.10
Correlation (5Y) Calculated over the trailing 5-year period	0.05
Correlation (10Y) Calculated over the trailing 10-year period	-0.06
Correlation (All Time) Calculated using the full available price history since Jan 5, 2016	-0.08

The correlation between TBCIX and PRULX shifts across timeframes, from -0.08 (all time) to 0.13 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

TBCIX vs. PRULX — Risk / Return Rank

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

TBCIX

TBCIX Risk / Return Rank: 21
TBCIX Sharpe Ratio Rank: 27
TBCIX Sortino Ratio Rank: 25
TBCIX Omega Ratio Rank: 24
TBCIX Calmar Ratio Rank: 15
TBCIX Martin Ratio Rank: 16

PRULX

PRULX Risk / Return Rank: 9
PRULX Sharpe Ratio Rank: 9
PRULX Sortino Ratio Rank: 9
PRULX Omega Ratio Rank: 9
PRULX Calmar Ratio Rank: 9
PRULX Martin Ratio Rank: 9

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.

TBCIX vs. PRULX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for T. Rowe Price Blue Chip Growth Fund I Class (TBCIX) and T. Rowe Price U.S. Treasury Long Term Index Fund (PRULX). 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.

	TBCIX	PRULX	Difference
Sharpe ratio: Return per unit of total volatility	1.47	0.75	+0.73
Sortino ratio: Return per unit of downside risk	2.06	1.12	+0.94
Omega ratio: Gain probability vs. loss probability	1.26	1.13	+0.12
Calmar ratio: Return relative to maximum drawdown	1.36	0.94	+0.42
Martin ratio: Return relative to average drawdown	4.57	2.54	+2.04
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

TBCIX vs. PRULX - Sharpe Ratio Comparison

The current TBCIX Sharpe Ratio is 1.47, which is higher than the PRULX Sharpe Ratio of 0.75. The chart below compares the historical Sharpe Ratios of TBCIX and PRULX, 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

	TBCIX	PRULX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.47	0.75	+0.73
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.59	-0.35	+0.95
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.79	-0.03	+0.82
Sharpe Ratio (All Time) Calculated using the full available price history	0.76	0.45	+0.31

Drawdowns

TBCIX vs. PRULX - Drawdown Comparison

The maximum TBCIX drawdown since its inception was -43.26%, smaller than the maximum PRULX drawdown of -47.40%. Use the drawdown chart below to compare losses from any high point for TBCIX and PRULX.

Drawdown Indicators

	TBCIX	PRULX	Difference
Max Drawdown Largest peak-to-trough decline	-43.26%	-47.40%	+4.14%
Max Drawdown (1Y) Largest decline over 1 year	-16.96%	-7.35%	-9.61%
Max Drawdown (3Y) Largest decline over 3 years	-23.06%	-17.64%	-5.42%
Max Drawdown (5Y) Largest decline over 5 years	-43.26%	-42.35%	-0.91%
Max Drawdown (10Y) Largest decline over 10 years	-43.26%	-47.40%	+4.14%
Current Drawdown Current decline from peak	-0.69%	-36.94%	+36.25%
Average Drawdown Average peak-to-trough decline	-8.07%	-9.37%	+1.30%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.01%	2.69%	+2.32%

Volatility

TBCIX vs. PRULX - Volatility Comparison

T. Rowe Price Blue Chip Growth Fund I Class (TBCIX) has a higher volatility of 3.57% compared to T. Rowe Price U.S. Treasury Long Term Index Fund (PRULX) at 2.81%. This indicates that TBCIX's price experiences larger fluctuations and is considered to be riskier than PRULX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	TBCIX	PRULX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.57%	2.81%	+0.76%
Volatility (6M) Calculated over the trailing 6-month period	12.01%	6.47%	+5.54%
Volatility (1Y) Calculated over the trailing 1-year period	15.64%	9.33%	+6.31%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	23.91%	14.68%	+9.23%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.76%	13.98%	+8.78%

TBCIX vs. PRULX - Expense Ratio Comparison

TBCIX has a 0.56% expense ratio, which is higher than PRULX's 0.29% expense ratio.

Dividends

TBCIX vs. PRULX - Dividend Comparison

TBCIX's dividend yield for the trailing twelve months is around 4.93%, less than PRULX's 5.31% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
PRULX T. Rowe Price U.S. Treasury Long Term Index Fund	5.31%	5.21%	4.88%	3.84%	2.07%	1.72%	20.34%	16.60%	2.62%	2.48%	4.65%	5.09%
TBCIX T. Rowe Price Blue Chip Growth Fund I Class	4.93%	5.20%	18.28%	3.47%	5.84%	10.03%	1.18%	0.59%	2.50%	3.05%	0.81%	0.00%

Frequently Asked Questions

Can I hold both TBCIX and PRULX in my portfolio?

TBCIX and PRULX have a correlation of 0.13, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, TBCIX or PRULX?

TBCIX has higher volatility (3.57%) compared to PRULX (2.81%). In terms of maximum drawdown, TBCIX dropped -43.26% vs PRULX's -47.40%.

Which has better risk-adjusted returns?

TBCIX currently has the higher Sharpe Ratio (1.47 vs 0.75), 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.