CSDIX vs. FESIX

Last updated Jun 4, 2026

CSDIX (Cohen & Steers Real Estate Securities Fund CLASS I) and FESIX (Fidelity SAI Real Estate Index Fund) are both REIT funds. Over the past 5 years, CSDIX returned 3.80%/yr vs 1.99%/yr for FESIX. With a 0.97 correlation, they move nearly in lockstep. CSDIX charges 0.84%/yr vs 0.07%/yr for FESIX.

Performance

CSDIX vs. FESIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Cohen & Steers Real Estate Securities Fund CLASS I (CSDIX) and Fidelity SAI Real Estate Index Fund (FESIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, CSDIX achieves a 10.78% return, which is significantly higher than FESIX's 7.52% return.

CSDIX

• 1D: 0.32%
• 1M: -1.29%
• YTD: 10.78%
• 6M: 10.03%
• 1Y: 11.79%
• 3Y*: 10.91%
• 5Y*: 3.80%
• 10Y*: 7.17%

FESIX

• 1D: 0.37%
• 1M: -0.91%
• YTD: 7.52%
• 6M: 6.51%
• 1Y: 9.76%
• 3Y*: 8.95%
• 5Y*: 1.99%
• 10Y*: —

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

CSDIX vs. FESIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
CSDIX Cohen & Steers Real Estate Securities Fund CLASS I	10.78%	4.32%	6.73%	13.18%	-26.33%	41.70%	-1.74%	31.84%	-4.25%	7.80%
FESIX Fidelity SAI Real Estate Index Fund	7.52%	3.09%	4.80%	11.83%	-26.47%	40.61%	-11.10%	23.06%	-4.95%	2.81%

Correlation

The correlation between CSDIX and FESIX 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	0.97
Correlation (5Y) Calculated over the trailing 5-year period	0.98
Correlation (All Time) Calculated using the full available price history since Jan 4, 2017	0.97

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

Return for Risk

CSDIX vs. FESIX — Risk / Return Rank

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

CSDIX

CSDIX Risk / Return Rank: 13
CSDIX Sharpe Ratio Rank: 11
CSDIX Sortino Ratio Rank: 10
CSDIX Omega Ratio Rank: 11
CSDIX Calmar Ratio Rank: 17
CSDIX Martin Ratio Rank: 16

FESIX

FESIX Risk / Return Rank: 10
FESIX Sharpe Ratio Rank: 9
FESIX Sortino Ratio Rank: 9
FESIX Omega Ratio Rank: 9
FESIX Calmar Ratio Rank: 12
FESIX Martin Ratio Rank: 12

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.

CSDIX vs. FESIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Cohen & Steers Real Estate Securities Fund CLASS I (CSDIX) and Fidelity SAI Real Estate Index Fund (FESIX). 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.

	CSDIX	FESIX	Difference
Sharpe ratio: Return per unit of total volatility	0.88	0.73	+0.15
Sortino ratio: Return per unit of downside risk	1.24	1.07	+0.18
Omega ratio: Gain probability vs. loss probability	1.16	1.13	+0.03
Calmar ratio: Return relative to maximum drawdown	1.46	1.14	+0.32
Martin ratio: Return relative to average drawdown	4.38	3.56	+0.82
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

CSDIX vs. FESIX - Sharpe Ratio Comparison

The current CSDIX Sharpe Ratio is 0.88, which is comparable to the FESIX Sharpe Ratio of 0.73. The chart below compares the historical Sharpe Ratios of CSDIX and FESIX, 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

	CSDIX	FESIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.88	0.73	+0.15
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.20	0.11	+0.10
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.35	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.35	0.18	+0.17

Drawdowns

CSDIX vs. FESIX - Drawdown Comparison

The maximum CSDIX drawdown since its inception was -72.37%, which is greater than FESIX's maximum drawdown of -44.22%. Use the drawdown chart below to compare losses from any high point for CSDIX and FESIX.

Drawdown Indicators

	CSDIX	FESIX	Difference
Max Drawdown Largest peak-to-trough decline	-72.37%	-44.22%	-28.15%
Max Drawdown (1Y) Largest decline over 1 year	-7.91%	-8.42%	+0.51%
Max Drawdown (3Y) Largest decline over 3 years	-17.23%	-17.48%	+0.25%
Max Drawdown (5Y) Largest decline over 5 years	-33.09%	-34.51%	+1.42%
Max Drawdown (10Y) Largest decline over 10 years	-42.68%	—	—
Current Drawdown Current decline from peak	-3.09%	-4.48%	+1.39%
Average Drawdown Average peak-to-trough decline	-10.94%	-11.39%	+0.45%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.63%	2.69%	-0.06%

Volatility

CSDIX vs. FESIX - Volatility Comparison

Cohen & Steers Real Estate Securities Fund CLASS I (CSDIX) and Fidelity SAI Real Estate Index Fund (FESIX) have volatilities of 3.79% and 3.81%, 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

	CSDIX	FESIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.79%	3.81%	-0.02%
Volatility (6M) Calculated over the trailing 6-month period	9.89%	9.31%	+0.58%
Volatility (1Y) Calculated over the trailing 1-year period	13.20%	13.16%	+0.04%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.67%	18.93%	-0.26%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.86%	21.74%	-0.88%

CSDIX vs. FESIX - Expense Ratio Comparison

CSDIX has a 0.84% expense ratio, which is higher than FESIX's 0.07% expense ratio.

Dividends

CSDIX vs. FESIX - Dividend Comparison

CSDIX's dividend yield for the trailing twelve months is around 3.42%, more than FESIX's 2.87% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CSDIX Cohen & Steers Real Estate Securities Fund CLASS I	3.42%	3.72%	2.78%	2.93%	7.67%	4.30%	5.39%	7.62%	3.60%	2.52%	5.84%	19.24%
FESIX Fidelity SAI Real Estate Index Fund	2.87%	3.09%	52.40%	3.87%	55.39%	5.01%	2.71%	3.78%	3.15%	2.21%	0.00%	0.00%

Frequently Asked Questions

Can I hold both CSDIX and FESIX in my portfolio?

With a correlation of 0.95, CSDIX and FESIX 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, CSDIX or FESIX?

FESIX has higher volatility (3.81%) compared to CSDIX (3.79%). In terms of maximum drawdown, CSDIX dropped -72.37% vs FESIX's -44.22%.

Which has better risk-adjusted returns?

CSDIX currently has the higher Sharpe Ratio (0.88 vs 0.73), 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.