RPLCX vs. SBIFX

Last updated Jun 24, 2026

RPLCX (T. Rowe Price Institutional Long Duration Credit Fund) and SBIFX (Sextant Bond Income Fund) are both Long-Term Bond funds. Their correlation of 0.87 suggests significant overlap in exposure. RPLCX charges 0.45%/yr vs 0.65%/yr for SBIFX.

Performance

RPLCX vs. SBIFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in T. Rowe Price Institutional Long Duration Credit Fund (RPLCX) and Sextant Bond Income Fund (SBIFX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

RPLCX

• 1D: -0.53%
• 1M: 1.96%
• YTD: 0.77%
• 6M: 1.24%
• 1Y: 6.89%
• 3Y*: 3.73%
• 5Y*: -2.74%
• 10Y*: 2.18%

SBIFX

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

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

RPLCX vs. SBIFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RPLCX T. Rowe Price Institutional Long Duration Credit Fund	0.77%	7.65%	-1.84%	9.05%	-27.00%	-0.19%	16.73%	23.72%	-6.27%	11.03%
SBIFX Sextant Bond Income Fund	-0.81%	7.29%	-0.05%	5.30%	-17.54%	-2.37%	8.83%	10.24%	-1.13%	5.14%

Correlation

The correlation between RPLCX and SBIFX is 0.67, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.67
Correlation (3Y) Calculated over the trailing 3-year period	0.86
Correlation (5Y) Calculated over the trailing 5-year period	0.89
Correlation (10Y) Calculated over the trailing 10-year period	0.87
Correlation (All Time) Calculated using the full available price history since Jan 2, 2014	0.87

Over the past year, the correlation between RPLCX and SBIFX has dropped to 0.67 - well below their long-term average of 0.87, suggesting their price drivers have been diverging.

Return for Risk

RPLCX vs. SBIFX — Risk / Return Rank

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

RPLCX

RPLCX Risk / Return Rank: 14
RPLCX Sharpe Ratio Rank: 13
RPLCX Sortino Ratio Rank: 14
RPLCX Omega Ratio Rank: 12
RPLCX Calmar Ratio Rank: 18
RPLCX Martin Ratio Rank: 15

SBIFX

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

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.

RPLCX vs. SBIFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for T. Rowe Price Institutional Long Duration Credit Fund (RPLCX) and Sextant Bond Income Fund (SBIFX). 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.

	RPLCX	SBIFX	Difference
Sharpe ratio: Return per unit of total volatility	0.93	—	—
Sortino ratio: Return per unit of downside risk	1.41	—	—
Omega ratio: Gain probability vs. loss probability	1.17	—	—
Calmar ratio: Return relative to maximum drawdown	1.39	—	—
Martin ratio: Return relative to average drawdown	3.78	—	—

Drawdowns

Drawdown Indicators

	RPLCX	SBIFX	Difference
Max Drawdown Largest peak-to-trough decline	-35.21%	—	—
Max Drawdown (1Y) Largest decline over 1 year	-5.19%	—	—
Max Drawdown (3Y) Largest decline over 3 years	-13.32%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-35.21%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-35.21%	—	—
Current Drawdown Current decline from peak	-16.87%	—	—
Average Drawdown Average peak-to-trough decline	-10.15%	—	—
Ulcer Index Depth and duration of drawdowns from previous peaks	1.90%	—	—

Volatility

Volatility by Period

	RPLCX	SBIFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.14%	—	—
Volatility (6M) Calculated over the trailing 6-month period	5.71%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	7.76%	—	—
Volatility (5Y) Calculated over the trailing 5-year period, annualized	11.63%	—	—
Volatility (10Y) Calculated over the trailing 10-year period, annualized	10.60%	—	—

RPLCX vs. SBIFX - Expense Ratio Comparison

RPLCX has a 0.45% expense ratio, which is lower than SBIFX's 0.65% expense ratio.

Dividends

RPLCX vs. SBIFX - Dividend Comparison

RPLCX's dividend yield for the trailing twelve months is around 5.36%, more than SBIFX's 2.94% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
RPLCX T. Rowe Price Institutional Long Duration Credit Fund	5.36%	5.32%	5.17%	4.15%	3.54%	6.09%	7.16%	13.58%	4.33%	4.07%	3.79%	4.70%
SBIFX Sextant Bond Income Fund	2.94%	3.57%	3.19%	2.60%	2.14%	2.33%	2.39%	2.86%	3.22%	3.04%	2.92%	3.30%

Frequently Asked Questions

Can I hold both RPLCX and SBIFX in my portfolio?

RPLCX and SBIFX have a correlation of 0.67, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.