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^MID vs. ^OEX
Performance
Return for Risk
Drawdowns
Volatility

^MID vs. ^OEX

Last updated Jun 5, 2026

^MID (S&P Mid Cap 400 Index) and ^OEX (S&P 100 Index) are both indexes. Over the past 10 years, ^MID returned 9.55%/yr vs 14.96%/yr for ^OEX. A 0.79 correlation means they provide meaningful diversification when combined.

Performance

^MID vs. ^OEX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in S&P Mid Cap 400 Index (^MID) and S&P 100 Index (^OEX). The values are adjusted to include any dividend payments, if applicable.

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Returns By Period

In the year-to-date period, ^MID achieves a 13.94% return, which is significantly higher than ^OEX's 9.46% return. Over the past 10 years, ^MID has underperformed ^OEX with an annualized return of 9.55%, while ^OEX has yielded a comparatively higher 14.96% annualized return.

^MID

1D
0.39%
1M
2.80%
YTD
13.94%
6M
13.48%
1Y
24.49%
3Y*
14.95%
5Y*
6.66%
10Y*
9.55%

^OEX

1D
0.35%
1M
4.77%
YTD
9.46%
6M
9.14%
1Y
28.71%
3Y*
23.43%
5Y*
14.42%
10Y*
14.96%
*Multi-year figures are annualized to reflect compound growth (CAGR)

^MID vs. ^OEX - Yearly Performance Comparison

2026 (YTD)202520242023202220212020201920182017
^MID
S&P Mid Cap 400 Index		13.94%5.90%12.20%14.45%-14.48%23.21%11.81%24.05%-12.50%14.45%
^OEX
S&P 100 Index		9.46%18.76%29.25%30.83%-22.12%27.55%19.30%29.47%-5.86%19.34%

Correlation

The correlation between ^MID and ^OEX is 0.63, 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

0.63

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

0.66

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

0.76

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

0.77

Correlation (All Time)
Calculated using the full available price history since Mar 14, 1983

0.79

The correlation between ^MID and ^OEX shifts across timeframes, from 0.63 (1 year) to 0.79 (all time), reflecting how their relationship changes across market environments.

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S&P Mid Cap 400 Index

S&P 100 Index

Often compared with ^MID:
^MID vs. SPY^MID vs. ^NDX^MID vs. ^IXIC
Often compared with ^OEX:
^OEX vs. SPY^OEX vs. VOO^OEX vs. QQQ^OEX vs. ^GSPC^OEX vs. AMOMX^OEX vs. ^NDX^OEX vs. SPOT

Return for Risk

^MID vs. ^OEX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.
^MID
^MID Risk / Return Rank: 6161
Overall Rank
^MID Sharpe Ratio Rank: 5555
Sharpe Ratio Rank
^MID Sortino Ratio Rank: 5757
Sortino Ratio Rank
^MID Omega Ratio Rank: 5555
Omega Ratio Rank
^MID Calmar Ratio Rank: 6767
Calmar Ratio Rank
^MID Martin Ratio Rank: 6868
Martin Ratio Rank
^OEX
^OEX Risk / Return Rank: 7474
Overall Rank
^OEX Sharpe Ratio Rank: 7878
Sharpe Ratio Rank
^OEX Sortino Ratio Rank: 7878
Sortino Ratio Rank
^OEX Omega Ratio Rank: 7878
Omega Ratio Rank
^OEX Calmar Ratio Rank: 6363
Calmar Ratio Rank
^OEX Martin Ratio Rank: 7171
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.

^MID vs. ^OEX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for S&P Mid Cap 400 Index (^MID) and S&P 100 Index (^OEX). 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.

^MID^OEXDifference
Sharpe ratioReturn per unit of total volatility
1.60
2.27

-0.68

Sortino ratioReturn per unit of downside risk
2.34
3.10

-0.77

Omega ratioGain probability vs. loss probability

1.28

1.41

-0.13

Calmar ratioReturn relative to maximum drawdown

2.74

2.55

+0.19

Martin ratioReturn relative to average drawdown

9.88

10.65

-0.77

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

^MID vs. ^OEX - Sharpe Ratio Comparison

The current ^MID Sharpe Ratio is 1.60, which is comparable to the ^OEX Sharpe Ratio of 2.27. The chart below compares the historical Sharpe Ratios of ^MID and ^OEX, 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

^MID^OEXDifference

Sharpe Ratio (1Y)

Calculated over the trailing 1-year period

1.60

2.27

-0.68

Sharpe Ratio (5Y)

Calculated over the trailing 5-year period

0.34

0.82

-0.48

Sharpe Ratio (10Y)

Calculated over the trailing 10-year period

0.46

0.81

-0.36

Sharpe Ratio (All Time)

Calculated using the full available price history

0.57

0.51

+0.06

Drawdowns

^MID vs. ^OEX - Drawdown Comparison

The maximum ^MID drawdown since its inception was -56.32%, smaller than the maximum ^OEX drawdown of -61.31%. Use the drawdown chart below to compare losses from any high point for ^MID and ^OEX.

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Drawdown Indicators

^MID^OEXDifference

Max Drawdown

Largest peak-to-trough decline

-56.32%

-61.31%

+4.99%

Max Drawdown (1Y)

Largest decline over 1 year

-8.96%

-11.30%

+2.34%

Max Drawdown (3Y)

Largest decline over 3 years

-24.46%

-19.89%

-4.57%

Max Drawdown (5Y)

Largest decline over 5 years

-24.46%

-27.23%

+2.77%

Max Drawdown (10Y)

Largest decline over 10 years

-42.14%

-31.53%

-10.61%

Current Drawdown

Current decline from peak

0.00%

-0.68%

+0.68%

Average Drawdown

Average peak-to-trough decline

-7.13%

-12.82%

+5.69%

Ulcer Index

Depth and duration of drawdowns from previous peaks

2.48%

2.70%

-0.22%

Volatility

^MID vs. ^OEX - Volatility Comparison

S&P Mid Cap 400 Index (^MID) has a higher volatility of 4.21% compared to S&P 100 Index (^OEX) at 3.23%. This indicates that ^MID's price experiences larger fluctuations and is considered to be riskier than ^OEX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

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Volatility by Period

^MID^OEXDifference

Volatility (1M)

Calculated over the trailing 1-month period

4.21%

3.23%

+0.98%

Volatility (6M)

Calculated over the trailing 6-month period

11.27%

9.52%

+1.75%

Volatility (1Y)

Calculated over the trailing 1-year period

15.40%

12.68%

+2.72%

Volatility (5Y)

Calculated over the trailing 5-year period, annualized

19.64%

17.75%

+1.89%

Volatility (10Y)

Calculated over the trailing 10-year period, annualized

21.00%

18.47%

+2.53%

Frequently Asked Questions

^MID and ^OEX have a correlation of 0.63, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

^MID has higher volatility (4.21%) compared to ^OEX (3.23%). In terms of maximum drawdown, ^MID dropped -56.32% vs ^OEX's -61.31%.

^OEX currently has the higher Sharpe Ratio (2.27 vs 1.60), 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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