FCBIX vs. SIDCX

Last updated Jun 6, 2026

FCBIX (Fidelity Advisor Corporate Bond Fund Class I) and SIDCX (SEI Institutional Investments Trust Intermediate Duration Credit Fund) are both Corporate Bonds funds. Over the past 10 years, FCBIX returned 2.68%/yr vs 2.28%/yr for SIDCX. With a 0.95 correlation, they move nearly in lockstep. FCBIX charges 0.50%/yr vs 0.32%/yr for SIDCX.

Performance

FCBIX vs. SIDCX - Performance Comparison

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

Returns By Period

In the year-to-date period, FCBIX achieves a 0.44% return, which is significantly lower than SIDCX's 0.60% return. Over the past 10 years, FCBIX has outperformed SIDCX with an annualized return of 2.68%, while SIDCX has yielded a comparatively lower 2.28% annualized return.

FCBIX

• 1D: 0.09%
• 1M: -0.01%
• YTD: 0.44%
• 6M: 0.63%
• 1Y: 5.54%
• 3Y*: 5.31%
• 5Y*: 0.21%
• 10Y*: 2.68%

SIDCX

• 1D: 0.23%
• 1M: 0.07%
• YTD: 0.60%
• 6M: 0.77%
• 1Y: 5.37%
• 3Y*: 4.58%
• 5Y*: 0.02%
• 10Y*: 2.28%

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

FCBIX vs. SIDCX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FCBIX Fidelity Advisor Corporate Bond Fund Class I	0.44%	7.80%	2.45%	8.40%	-17.14%	-1.64%	10.75%	14.43%	-2.61%	6.78%
SIDCX SEI Institutional Investments Trust Intermediate Duration Credit Fund	0.60%	7.40%	1.92%	6.58%	-15.78%	-1.66%	10.68%	12.43%	-1.61%	5.66%

Correlation

The correlation between FCBIX and SIDCX is 0.97 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.97
Correlation (3Y) Calculated over the trailing 3-year period	0.98
Correlation (5Y) Calculated over the trailing 5-year period	0.98
Correlation (10Y) Calculated over the trailing 10-year period	0.96
Correlation (All Time) Calculated using the full available price history since Apr 2, 2015	0.95

The correlation between FCBIX and SIDCX has been stable across timeframes, ranging from 0.95 to 0.98 - a consistent structural relationship.

Return for Risk

FCBIX vs. SIDCX — Risk / Return Rank

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

FCBIX

FCBIX Risk / Return Rank: 21
FCBIX Sharpe Ratio Rank: 22
FCBIX Sortino Ratio Rank: 21
FCBIX Omega Ratio Rank: 20
FCBIX Calmar Ratio Rank: 22
FCBIX Martin Ratio Rank: 22

SIDCX

SIDCX Risk / Return Rank: 21
SIDCX Sharpe Ratio Rank: 20
SIDCX Sortino Ratio Rank: 21
SIDCX Omega Ratio Rank: 20
SIDCX Calmar Ratio Rank: 23
SIDCX Martin Ratio Rank: 22

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.

FCBIX vs. SIDCX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Advisor Corporate Bond Fund Class I (FCBIX) 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.

	FCBIX	SIDCX	Difference
Sharpe ratio: Return per unit of total volatility	1.26	1.24	+0.02
Sortino ratio: Return per unit of downside risk	1.84	1.84	-0.01
Omega ratio: Gain probability vs. loss probability	1.22	1.22	0.00
Calmar ratio: Return relative to maximum drawdown	1.62	1.70	-0.08
Martin ratio: Return relative to average drawdown	5.24	5.34	-0.10
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FCBIX vs. SIDCX - Sharpe Ratio Comparison

The current FCBIX Sharpe Ratio is 1.26, which is comparable to the SIDCX Sharpe Ratio of 1.24. The chart below compares the historical Sharpe Ratios of FCBIX 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.

Sharpe Ratios by Period

	FCBIX	SIDCX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.26	1.24	+0.02
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.03	0.00	+0.03
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.45	0.40	+0.05
Sharpe Ratio (All Time) Calculated using the full available price history	0.69	0.41	+0.28

Drawdowns

FCBIX vs. SIDCX - Drawdown Comparison

The maximum FCBIX drawdown since its inception was -23.28%, which is greater than SIDCX's maximum drawdown of -21.47%. Use the drawdown chart below to compare losses from any high point for FCBIX and SIDCX.

Drawdown Indicators

	FCBIX	SIDCX	Difference
Max Drawdown Largest peak-to-trough decline	-23.28%	-21.47%	-1.81%
Max Drawdown (1Y) Largest decline over 1 year	-3.31%	-3.10%	-0.21%
Max Drawdown (3Y) Largest decline over 3 years	-6.59%	-6.38%	-0.21%
Max Drawdown (5Y) Largest decline over 5 years	-23.25%	-21.39%	-1.86%
Max Drawdown (10Y) Largest decline over 10 years	-23.28%	-21.47%	-1.81%
Current Drawdown Current decline from peak	-1.99%	-2.80%	+0.81%
Average Drawdown Average peak-to-trough decline	-4.10%	-5.22%	+1.12%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.02%	0.99%	+0.03%

Volatility

FCBIX vs. SIDCX - Volatility Comparison

The current volatility for Fidelity Advisor Corporate Bond Fund Class I (FCBIX) is 1.41%, while SEI Institutional Investments Trust Intermediate Duration Credit Fund (SIDCX) has a volatility of 1.52%. This indicates that FCBIX experiences smaller price fluctuations and is considered to be less risky than SIDCX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FCBIX	SIDCX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.41%	1.52%	-0.11%
Volatility (6M) Calculated over the trailing 6-month period	3.13%	3.16%	-0.03%
Volatility (1Y) Calculated over the trailing 1-year period	4.32%	4.30%	+0.02%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.70%	6.42%	+0.28%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.96%	5.70%	+0.26%

FCBIX vs. SIDCX - Expense Ratio Comparison

FCBIX has a 0.50% expense ratio, which is higher than SIDCX's 0.32% expense ratio.

Dividends

FCBIX vs. SIDCX - Dividend Comparison

FCBIX's dividend yield for the trailing twelve months is around 4.19%, less than SIDCX's 4.70% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FCBIX Fidelity Advisor Corporate Bond Fund Class I	4.19%	4.06%	3.59%	3.39%	2.50%	2.78%	3.34%	3.24%	3.60%	3.12%	3.50%	2.96%
SIDCX SEI Institutional Investments Trust Intermediate Duration Credit Fund	4.70%	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 FCBIX and SIDCX in my portfolio?

With a correlation of 0.97, FCBIX 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, FCBIX or SIDCX?

SIDCX has higher volatility (1.52%) compared to FCBIX (1.41%). In terms of maximum drawdown, FCBIX dropped -23.28% vs SIDCX's -21.47%.

Which has better risk-adjusted returns?

FCBIX currently has the higher Sharpe Ratio (1.26 vs 1.24), 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.