Why do some small caps tank on option expiration day?

Is that because naked-put shorts are dumping the stock they had to buy?
If that was the case then naked-call longs would be causing some stocks to soar and I don't see that.

Or is it price manipulation of some sorts?

A few examples from last Friday: CEP, CVO, GBE, FCEL

Is this a tradable phenomenon?

 

"That" probably had more to do with the Goldman Sachs "news" than anything else. All of the financials were pulled into that vortex.

 

Any chance it had something to do with Friday being a down day???

 

Was Friday a down day because it was a down day or because of GS?

 

It was a down day on the "Lude" bb

 

?....??.....WTH?......the age difference between us is atleast 12 years.

 

Hey, it's not my fault that you stunted your developement

(ducking)

 

Bond traders don't "mature".