RRPAX vs. ANBIX

Last updated Jun 5, 2026

RRPAX (SEI Institutional Investments Trust Real Return Fund) and ANBIX (AB Bond Inflation Strategy) are both Inflation-Protected Bonds funds. Over the past 10 years, RRPAX returned 2.98%/yr vs 3.64%/yr for ANBIX. Their correlation of 0.81 suggests significant overlap in exposure. RRPAX charges 0.02%/yr vs 0.59%/yr for ANBIX.

Performance

RRPAX vs. ANBIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in SEI Institutional Investments Trust Real Return Fund (RRPAX) and AB Bond Inflation Strategy (ANBIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RRPAX achieves a 1.97% return, which is significantly higher than ANBIX's 1.58% return. Over the past 10 years, RRPAX has underperformed ANBIX with an annualized return of 2.98%, while ANBIX has yielded a comparatively higher 3.64% annualized return.

RRPAX

• 1D: 0.00%
• 1M: 0.11%
• YTD: 1.97%
• 6M: 1.88%
• 1Y: 4.58%
• 3Y*: 4.96%
• 5Y*: 2.91%
• 10Y*: 2.98%

ANBIX

• 1D: -0.03%
• 1M: 0.08%
• YTD: 1.58%
• 6M: 1.58%
• 1Y: 4.33%
• 3Y*: 5.15%
• 5Y*: 2.34%
• 10Y*: 3.64%

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

RRPAX vs. ANBIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RRPAX SEI Institutional Investments Trust Real Return Fund	1.97%	6.53%	4.54%	3.49%	-4.06%	5.41%	5.64%	5.01%	0.31%	0.73%
ANBIX AB Bond Inflation Strategy	1.58%	7.52%	3.20%	5.20%	-8.50%	6.35%	9.35%	9.29%	-0.76%	2.93%

Correlation

The correlation between RRPAX and ANBIX is 0.78, 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	0.78
Correlation (3Y) Calculated over the trailing 3-year period	0.81
Correlation (5Y) Calculated over the trailing 5-year period	0.84
Correlation (10Y) Calculated over the trailing 10-year period	0.81
Correlation (All Time) Calculated using the full available price history since Jan 28, 2010	0.81

The correlation between RRPAX and ANBIX has been stable across timeframes, ranging from 0.78 to 0.84 - a consistent structural relationship.

Return for Risk

RRPAX vs. ANBIX — Risk / Return Rank

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

RRPAX

RRPAX Risk / Return Rank: 88
RRPAX Sharpe Ratio Rank: 79
RRPAX Sortino Ratio Rank: 88
RRPAX Omega Ratio Rank: 84
RRPAX Calmar Ratio Rank: 94
RRPAX Martin Ratio Rank: 94

ANBIX

ANBIX Risk / Return Rank: 75
ANBIX Sharpe Ratio Rank: 57
ANBIX Sortino Ratio Rank: 73
ANBIX Omega Ratio Rank: 67
ANBIX Calmar Ratio Rank: 88
ANBIX 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.

RRPAX vs. ANBIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for SEI Institutional Investments Trust Real Return Fund (RRPAX) and AB Bond Inflation Strategy (ANBIX). 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.

	RRPAX	ANBIX	Difference
Sharpe ratio: Return per unit of total volatility	2.57	2.19	+0.38
Sortino ratio: Return per unit of downside risk	4.24	3.55	+0.69
Omega ratio: Gain probability vs. loss probability	1.57	1.45	+0.12
Calmar ratio: Return relative to maximum drawdown	5.54	4.35	+1.18
Martin ratio: Return relative to average drawdown	20.50	16.38	+4.13
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

RRPAX vs. ANBIX - Sharpe Ratio Comparison

The current RRPAX Sharpe Ratio is 2.57, which is comparable to the ANBIX Sharpe Ratio of 2.19. The chart below compares the historical Sharpe Ratios of RRPAX and ANBIX, 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

	RRPAX	ANBIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.57	2.19	+0.38
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.90	0.52	+0.38
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	1.11	0.91	+0.20
Sharpe Ratio (All Time) Calculated using the full available price history	0.52	0.86	-0.35

Drawdowns

RRPAX vs. ANBIX - Drawdown Comparison

The maximum RRPAX drawdown since its inception was -16.15%, which is greater than ANBIX's maximum drawdown of -11.56%. Use the drawdown chart below to compare losses from any high point for RRPAX and ANBIX.

Drawdown Indicators

	RRPAX	ANBIX	Difference
Max Drawdown Largest peak-to-trough decline	-16.15%	-11.56%	-4.59%
Max Drawdown (1Y) Largest decline over 1 year	-0.85%	-1.05%	+0.20%
Max Drawdown (3Y) Largest decline over 3 years	-1.89%	-2.52%	+0.63%
Max Drawdown (5Y) Largest decline over 5 years	-6.48%	-10.85%	+4.37%
Max Drawdown (10Y) Largest decline over 10 years	-6.48%	-11.56%	+5.08%
Current Drawdown Current decline from peak	-0.11%	-0.03%	-0.08%
Average Drawdown Average peak-to-trough decline	-2.95%	-2.19%	-0.76%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.23%	0.28%	-0.05%

Volatility

RRPAX vs. ANBIX - Volatility Comparison

SEI Institutional Investments Trust Real Return Fund (RRPAX) and AB Bond Inflation Strategy (ANBIX) have volatilities of 0.58% and 0.60%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RRPAX	ANBIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.58%	0.60%	-0.02%
Volatility (6M) Calculated over the trailing 6-month period	1.32%	1.44%	-0.12%
Volatility (1Y) Calculated over the trailing 1-year period	1.84%	2.10%	-0.26%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.24%	4.49%	-1.25%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.70%	4.00%	-1.30%

RRPAX vs. ANBIX - Expense Ratio Comparison

RRPAX has a 0.02% expense ratio, which is lower than ANBIX's 0.59% expense ratio.

Dividends

RRPAX vs. ANBIX - Dividend Comparison

RRPAX's dividend yield for the trailing twelve months is around 3.92%, less than ANBIX's 4.27% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ANBIX AB Bond Inflation Strategy	4.27%	4.93%	3.86%	4.55%	6.47%	4.70%	2.22%	3.19%	3.39%	2.05%	2.13%	1.61%
RRPAX SEI Institutional Investments Trust Real Return Fund	3.92%	4.64%	3.57%	2.43%	7.18%	5.33%	1.38%	2.14%	2.35%	1.89%	1.23%	0.00%

Frequently Asked Questions

Can I hold both RRPAX and ANBIX in my portfolio?

RRPAX and ANBIX have a correlation of 0.78, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RRPAX or ANBIX?

ANBIX has higher volatility (0.60%) compared to RRPAX (0.58%). In terms of maximum drawdown, RRPAX dropped -16.15% vs ANBIX's -11.56%.

Which has better risk-adjusted returns?

RRPAX currently has the higher Sharpe Ratio (2.57 vs 2.19), 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.