^MID vs. ^OEX

Last updated Apr 2, 2026

Compare and contrast key facts about S&P Mid Cap 400 Index (^MID) and S&P 100 Index (^OEX).

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.

^MID vs. ^OEX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
^MID S&P Mid Cap 400 Index	3.02%	5.90%	12.20%	14.45%	-14.48%	23.21%	11.81%	24.05%	-12.50%	14.45%
^OEX S&P 100 Index	-6.49%	18.76%	29.25%	30.83%	-22.12%	27.55%	19.30%	29.47%	-5.86%	19.34%

Returns By Period

In the year-to-date period, ^MID achieves a 3.02% return, which is significantly higher than ^OEX's -6.49% return. Over the past 10 years, ^MID has underperformed ^OEX with an annualized return of 8.90%, while ^OEX has yielded a comparatively higher 13.32% annualized return.

^MID

• 1D: 0.85%
• 1M: -5.55%
• YTD: 3.02%
• 6M: 3.99%
• 1Y: 15.98%
• 3Y*: 10.67%
• 5Y*: 5.16%
• 10Y*: 8.90%

^OEX

• 1D: 0.73%
• 1M: -4.22%
• YTD: -6.49%
• 6M: -4.06%
• 1Y: 17.96%
• 3Y*: 19.64%
• 5Y*: 11.98%
• 10Y*: 13.32%

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

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: 48
^MID Sharpe Ratio Rank: 46
^MID Sortino Ratio Rank: 47
^MID Omega Ratio Rank: 47
^MID Calmar Ratio Rank: 45
^MID Martin Ratio Rank: 57

^OEX

^OEX Risk / Return Rank: 67
^OEX Sharpe Ratio Rank: 64
^OEX Sortino Ratio Rank: 66
^OEX Omega Ratio Rank: 70
^OEX Calmar Ratio Rank: 66
^OEX Martin Ratio Rank: 69

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	^OEX	Difference
Sharpe ratio Return per unit of total volatility	0.77	0.93	-0.17
Sortino ratio Return per unit of downside risk	1.22	1.46	-0.24
Omega ratio Gain probability vs. loss probability	1.17	1.22	-0.05
Calmar ratio Return relative to maximum drawdown	1.18	1.53	-0.35
Martin ratio Return relative to average drawdown	4.99	5.98	-0.99
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 0.77, which is comparable to the ^OEX Sharpe Ratio of 0.93. The chart below compares the historical Sharpe Ratios of ^MID and ^OEX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	^MID	^OEX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.77	0.93	-0.17
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.26	0.68	-0.41
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.43	0.72	-0.30
Sharpe Ratio (All Time) Calculated using the full available price history	0.56	0.49	+0.07

Correlation

The correlation between ^MID and ^OEX is 0.79, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.

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.

Drawdown Indicators

	^MID	^OEX	Difference
Max Drawdown Largest peak-to-trough decline	-56.32%	-61.31%	+4.99%
Max Drawdown (1Y) Largest decline over 1 year	-14.11%	-12.08%	-2.03%
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	-5.60%	-7.80%	+2.20%
Average Drawdown Average peak-to-trough decline	-7.15%	-12.87%	+5.72%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.34%	3.09%	+0.25%

Volatility

^MID vs. ^OEX - Volatility Comparison

S&P Mid Cap 400 Index (^MID) has a higher volatility of 6.38% compared to S&P 100 Index (^OEX) at 5.63%. 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.

Volatility by Period

	^MID	^OEX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.38%	5.63%	+0.75%
Volatility (6M) Calculated over the trailing 6-month period	11.84%	10.07%	+1.77%
Volatility (1Y) Calculated over the trailing 1-year period	20.98%	19.34%	+1.64%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.64%	17.74%	+1.90%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.98%	18.44%	+2.54%