Charting the reasons any general weakness will allow these stocks to tumble.

Mutual fund managers allocate too much capital to low-quality stocks and Small Cap Blend ETFs hold poor quality stocks.

Sep E-mini S&Ps (ESU14 +0.18%) this morning are trading slightly higher by +0.18% on support from today's +0.63% rally in the Euro Stoxx 50 index and a further +0.2% upward rebound in Russian stocks.

The average mid cap score is 60.29 this week, above the four week moving average score of 55.76. The average mid cap is trading -11.59% below its 52 week high, 4.24% above its 200 dma, has 7.25 days to cover held short, and is expected to grow EPS by 19.66% next year.

June E-mini S&Ps (ESM14 +0.03%) this morning are up +0.05% at a new all-time high and European stocks are up +0.25% at a 5-1/2 year high after manufacturing activity in China last month expanded at the fastest pace in 5 months.

The average mid cap score is 55.31, above the four week moving average score of 54.67. The average mid cap stock is trading -14.14% below its 52 week high, 1.43% above its 200 dma, has 6.94 days to cover held short, and is expected to post EPS growth of 19.29% next year.