Selling because of what is on a SMB is not that far-fetched for some. I agree with you, but obviously alot of people draw support from SMBs, so if it is not there, they may be inclined to sell based on it. The point at which to sell on a stock is a difficult call. Depends on the reasons why you bought. I think the more relevant question is... why would you buy based on what is on an SMB?