LDRAX vs. SIDCX

Last updated Jun 24, 2026

LDRAX (SEI Institutional Investments Trust Long Duration Fund) and SIDCX (SEI Institutional Investments Trust Intermediate Duration Credit Fund) are both mutual funds - LDRAX is a Long-Term Bond fund managed by SEI, while SIDCX is a Corporate Bonds fund managed by SEI. Over the past 10 years, LDRAX returned 1.34%/yr vs 2.20%/yr for SIDCX. With a 0.95 correlation, they move nearly in lockstep. LDRAX charges 0.14%/yr vs 0.32%/yr for SIDCX.

Performance

LDRAX vs. SIDCX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in SEI Institutional Investments Trust Long Duration Fund (LDRAX) and SEI Institutional Investments Trust Intermediate Duration Credit Fund (SIDCX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

The year-to-date returns for both investments are quite close, with LDRAX having a 0.25% return and SIDCX slightly higher at 0.26%. Over the past 10 years, LDRAX has underperformed SIDCX with an annualized return of 1.34%, while SIDCX has yielded a comparatively higher 2.20% annualized return.

LDRAX

• 1D: -0.69%
• 1M: 1.32%
• YTD: 0.25%
• 6M: 0.52%
• 1Y: 5.03%
• 3Y*: 2.07%
• 5Y*: -3.78%
• 10Y*: 1.34%

SIDCX

• 1D: -0.34%
• 1M: 0.63%
• YTD: 0.26%
• 6M: 0.66%
• 1Y: 4.65%
• 3Y*: 4.46%
• 5Y*: -0.16%
• 10Y*: 2.20%

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

LDRAX vs. SIDCX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
LDRAX SEI Institutional Investments Trust Long Duration Fund	0.25%	6.81%	-3.28%	7.16%	-27.73%	-2.19%	18.23%	21.19%	-5.16%	11.74%
SIDCX SEI Institutional Investments Trust Intermediate Duration Credit Fund	0.26%	7.40%	1.92%	6.58%	-15.78%	-1.66%	10.68%	12.43%	-1.61%	5.66%

Correlation

The correlation between LDRAX and SIDCX is 0.95, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.95
Correlation (3Y) Calculated over the trailing 3-year period	0.95
Correlation (5Y) Calculated over the trailing 5-year period	0.96
Correlation (10Y) Calculated over the trailing 10-year period	0.95
Correlation (All Time) Calculated using the full available price history since Apr 1, 2015	0.95

The correlation between LDRAX and SIDCX has been stable across timeframes, ranging from 0.95 to 0.96 - a consistent structural relationship.

Return for Risk

LDRAX vs. SIDCX — Risk / Return Rank

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

LDRAX

LDRAX Risk / Return Rank: 9
LDRAX Sharpe Ratio Rank: 9
LDRAX Sortino Ratio Rank: 9
LDRAX Omega Ratio Rank: 8
LDRAX Calmar Ratio Rank: 11
LDRAX Martin Ratio Rank: 9

SIDCX

SIDCX Risk / Return Rank: 20
SIDCX Sharpe Ratio Rank: 19
SIDCX Sortino Ratio Rank: 20
SIDCX Omega Ratio Rank: 18
SIDCX Calmar Ratio Rank: 22
SIDCX Martin Ratio Rank: 21

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.

LDRAX vs. SIDCX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for SEI Institutional Investments Trust Long Duration Fund (LDRAX) and SEI Institutional Investments Trust Intermediate Duration Credit Fund (SIDCX). 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.

	LDRAX	SIDCX	Difference
Sharpe ratio: Return per unit of total volatility	0.69	1.15	-0.46
Sortino ratio: Return per unit of downside risk	1.03	1.73	-0.69
Omega ratio: Gain probability vs. loss probability	1.12	1.20	-0.08
Calmar ratio: Return relative to maximum drawdown	1.02	1.59	-0.57
Martin ratio: Return relative to average drawdown	2.49	4.84	-2.35

LDRAX vs. SIDCX - Sharpe Ratio Comparison

The current LDRAX Sharpe Ratio is 0.69, which is lower than the SIDCX Sharpe Ratio of 1.15. The chart below compares the historical Sharpe Ratios of LDRAX and SIDCX, 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

LDRAX vs. SIDCX - Drawdown Comparison

The maximum LDRAX drawdown since its inception was -37.23%, which is greater than SIDCX's maximum drawdown of -21.47%. Use the drawdown chart below to compare losses from any high point for LDRAX and SIDCX.

Drawdown Indicators

	LDRAX	SIDCX	Difference
Max Drawdown Largest peak-to-trough decline	-37.23%	-21.47%	-15.76%
Max Drawdown (1Y) Largest decline over 1 year	-5.34%	-3.10%	-2.24%
Max Drawdown (3Y) Largest decline over 3 years	-14.49%	-6.38%	-8.11%
Max Drawdown (5Y) Largest decline over 5 years	-36.35%	-21.39%	-14.96%
Max Drawdown (10Y) Largest decline over 10 years	-37.23%	-21.47%	-15.76%
Current Drawdown Current decline from peak	-22.63%	-3.13%	-19.50%
Average Drawdown Average peak-to-trough decline	-12.41%	-5.21%	-7.20%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.18%	1.02%	+1.16%

Volatility

LDRAX vs. SIDCX - Volatility Comparison

SEI Institutional Investments Trust Long Duration Fund (LDRAX) has a higher volatility of 1.98% compared to SEI Institutional Investments Trust Intermediate Duration Credit Fund (SIDCX) at 1.29%. This indicates that LDRAX's price experiences larger fluctuations and is considered to be riskier than SIDCX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	LDRAX	SIDCX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.98%	1.29%	+0.69%
Volatility (6M) Calculated over the trailing 6-month period	5.73%	3.25%	+2.48%
Volatility (1Y) Calculated over the trailing 1-year period	7.91%	4.29%	+3.62%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	12.51%	6.42%	+6.09%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	11.40%	5.71%	+5.69%

LDRAX vs. SIDCX - Expense Ratio Comparison

LDRAX has a 0.14% expense ratio, which is lower than SIDCX's 0.32% expense ratio.

Dividends

LDRAX vs. SIDCX - Dividend Comparison

LDRAX's dividend yield for the trailing twelve months is around 5.16%, more than SIDCX's 4.72% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
LDRAX SEI Institutional Investments Trust Long Duration Fund	5.16%	5.04%	4.62%	3.42%	3.23%	4.30%	12.32%	8.60%	4.80%	4.46%	6.21%	9.23%
SIDCX SEI Institutional Investments Trust Intermediate Duration Credit Fund	4.72%	4.61%	4.20%	2.99%	2.36%	3.57%	4.93%	3.07%	3.16%	2.77%	2.75%	1.89%

Frequently Asked Questions

Can I hold both LDRAX and SIDCX in my portfolio?

With a correlation of 0.95, LDRAX and SIDCX 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, LDRAX or SIDCX?

LDRAX has higher volatility (1.98%) compared to SIDCX (1.29%). In terms of maximum drawdown, LDRAX dropped -37.23% vs SIDCX's -21.47%.

Which has better risk-adjusted returns?

SIDCX currently has the higher Sharpe Ratio (1.15 vs 0.69), 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.