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SMCIX vs. WFSPX
Performance
Return for Risk
Drawdowns
Volatility
Dividends

SMCIX vs. WFSPX

Last updated Jun 4, 2026

SMCIX (Shelton Capital Management S&P Smallcap Index Fund) and WFSPX (iShares S&P 500 Index Fund) are both mutual funds - SMCIX is a Small Cap Blend Equities fund managed by BlackRock, while WFSPX is a S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, SMCIX returned 11.15%/yr vs 15.54%/yr for WFSPX. Their correlation of 0.82 suggests significant overlap in exposure. SMCIX charges 0.81%/yr vs 0.03%/yr for WFSPX.

Performance

SMCIX vs. WFSPX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Shelton Capital Management S&P Smallcap Index Fund (SMCIX) and iShares S&P 500 Index Fund (WFSPX). The values are adjusted to include any dividend payments, if applicable.

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Returns By Period

In the year-to-date period, SMCIX achieves a 16.24% return, which is significantly higher than WFSPX's 11.69% return. Over the past 10 years, SMCIX has underperformed WFSPX with an annualized return of 11.15%, while WFSPX has yielded a comparatively higher 15.54% annualized return.

SMCIX

1D
0.91%
1M
2.79%
YTD
16.24%
6M
15.02%
1Y
31.79%
3Y*
18.11%
5Y*
7.75%
10Y*
11.15%

WFSPX

1D
0.13%
1M
5.80%
YTD
11.69%
6M
11.72%
1Y
28.93%
3Y*
22.71%
5Y*
14.24%
10Y*
15.54%
*Multi-year figures are annualized to reflect compound growth (CAGR)

SMCIX vs. WFSPX - Yearly Performance Comparison

2026 (YTD)202520242023202220212020201920182017
SMCIX
Shelton Capital Management S&P Smallcap Index Fund		16.24%6.90%18.13%15.48%-16.41%26.53%11.27%30.68%-9.07%3.08%
WFSPX
iShares S&P 500 Index Fund		11.69%17.83%24.94%26.25%-18.14%28.63%18.43%31.45%-4.83%21.27%

Correlation

The correlation between SMCIX and WFSPX is 0.73, 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

0.73

Correlation (3Y)
Calculated over the trailing 3-year period

0.73

Correlation (5Y)
Calculated over the trailing 5-year period

0.79

Correlation (10Y)
Calculated over the trailing 10-year period

0.77

Correlation (All Time)
Calculated using the full available price history since Jan 3, 1997

0.82

The correlation between SMCIX and WFSPX has been stable across timeframes, ranging from 0.73 to 0.82 - a consistent structural relationship.

Compare stocks, funds, or ETFs

Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.

Shelton Capital Management S&P Smallcap Index Fund

iShares S&P 500 Index Fund

Often compared with SMCIX:
SMCIX vs. AMZNSMCIX vs. QQQISMCIX vs. ^GSPCSMCIX vs. NVDLSMCIX vs. FOSCXSMCIX vs. VFAIXSMCIX vs. LIVIX
Often compared with WFSPX:
WFSPX vs. JLGMXWFSPX vs. VOOWFSPX vs. FSPGXWFSPX vs. FXAIXWFSPX vs. BRMKXWFSPX vs. IVVWFSPX vs. APGYX

Return for Risk

SMCIX vs. WFSPX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.
SMCIX
SMCIX Risk / Return Rank: 5555
Overall Rank
SMCIX Sharpe Ratio Rank: 4444
Sharpe Ratio Rank
SMCIX Sortino Ratio Rank: 4545
Sortino Ratio Rank
SMCIX Omega Ratio Rank: 3939
Omega Ratio Rank
SMCIX Calmar Ratio Rank: 8383
Calmar Ratio Rank
SMCIX Martin Ratio Rank: 6767
Martin Ratio Rank
WFSPX
WFSPX Risk / Return Rank: 7373
Overall Rank
WFSPX Sharpe Ratio Rank: 7575
Sharpe Ratio Rank
WFSPX Sortino Ratio Rank: 6767
Sortino Ratio Rank
WFSPX Omega Ratio Rank: 6767
Omega Ratio Rank
WFSPX Calmar Ratio Rank: 7474
Calmar Ratio Rank
WFSPX Martin Ratio Rank: 8383
Martin Ratio Rank
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.

SMCIX vs. WFSPX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Shelton Capital Management S&P Smallcap Index Fund (SMCIX) and iShares S&P 500 Index Fund (WFSPX). 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.

SMCIXWFSPXDifference
Sharpe ratioReturn per unit of total volatility
1.95
2.52

-0.57

Sortino ratioReturn per unit of downside risk
2.81
3.42

-0.61

Omega ratioGain probability vs. loss probability

1.33

1.46

-0.12

Calmar ratioReturn relative to maximum drawdown

3.88

3.35

+0.53

Martin ratioReturn relative to average drawdown

12.92

15.65

-2.73

Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SMCIX vs. WFSPX - Sharpe Ratio Comparison

The current SMCIX Sharpe Ratio is 1.95, which is comparable to the WFSPX Sharpe Ratio of 2.52. The chart below compares the historical Sharpe Ratios of SMCIX and WFSPX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

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Sharpe Ratios by Period

SMCIXWFSPXDifference

Sharpe Ratio (1Y)

Calculated over the trailing 1-year period

1.95

2.52

-0.57

Sharpe Ratio (5Y)

Calculated over the trailing 5-year period

0.36

0.85

-0.49

Sharpe Ratio (10Y)

Calculated over the trailing 10-year period

0.47

0.87

-0.39

Sharpe Ratio (All Time)

Calculated using the full available price history

0.41

0.13

+0.28

Drawdowns

SMCIX vs. WFSPX - Drawdown Comparison

The maximum SMCIX drawdown since its inception was -58.13%, roughly equal to the maximum WFSPX drawdown of -58.21%. Use the drawdown chart below to compare losses from any high point for SMCIX and WFSPX.

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Drawdown Indicators

SMCIXWFSPXDifference

Max Drawdown

Largest peak-to-trough decline

-58.13%

-58.21%

+0.08%

Max Drawdown (1Y)

Largest decline over 1 year

-8.79%

-8.90%

+0.11%

Max Drawdown (3Y)

Largest decline over 3 years

-26.52%

-18.74%

-7.78%

Max Drawdown (5Y)

Largest decline over 5 years

-26.72%

-24.51%

-2.21%

Max Drawdown (10Y)

Largest decline over 10 years

-42.54%

-33.74%

-8.80%

Current Drawdown

Current decline from peak

-0.04%

0.00%

-0.04%

Average Drawdown

Average peak-to-trough decline

-9.53%

-12.77%

+3.24%

Ulcer Index

Depth and duration of drawdowns from previous peaks

2.63%

1.90%

+0.73%

Volatility

SMCIX vs. WFSPX - Volatility Comparison

Shelton Capital Management S&P Smallcap Index Fund (SMCIX) has a higher volatility of 4.52% compared to iShares S&P 500 Index Fund (WFSPX) at 2.82%. This indicates that SMCIX's price experiences larger fluctuations and is considered to be riskier than WFSPX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

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Volatility by Period

SMCIXWFSPXDifference

Volatility (1M)

Calculated over the trailing 1-month period

4.52%

2.82%

+1.70%

Volatility (6M)

Calculated over the trailing 6-month period

11.70%

8.97%

+2.73%

Volatility (1Y)

Calculated over the trailing 1-year period

17.52%

11.85%

+5.67%

Volatility (5Y)

Calculated over the trailing 5-year period, annualized

21.86%

16.88%

+4.98%

Volatility (10Y)

Calculated over the trailing 10-year period, annualized

23.63%

18.02%

+5.61%

SMCIX vs. WFSPX - Expense Ratio Comparison

SMCIX has a 0.81% expense ratio, which is higher than WFSPX's 0.03% expense ratio.

Dividends

SMCIX vs. WFSPX - Dividend Comparison

SMCIX's dividend yield for the trailing twelve months is around 8.04%, more than WFSPX's 1.56% yield.

PositionTTM20252024202320222021202020192018201720162015
SMCIX
Shelton Capital Management S&P Smallcap Index Fund		8.04%10.78%19.88%3.48%10.40%9.40%4.53%13.88%9.39%1.63%4.64%11.58%
WFSPX
iShares S&P 500 Index Fund		1.56%1.72%1.41%1.50%2.02%1.82%1.66%1.99%2.00%1.62%2.37%2.49%

Frequently Asked Questions

SMCIX and WFSPX have a correlation of 0.73, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

SMCIX has higher volatility (4.52%) compared to WFSPX (2.82%). In terms of maximum drawdown, SMCIX dropped -58.13% vs WFSPX's -58.21%.

WFSPX currently has the higher Sharpe Ratio (2.52 vs 1.95), 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.

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