you are all clueless. its option activity that make it pin to a strike price. many equities close at expiration much closer to a strike than a statical random average. For example the mean closing price on expiration for GLD is much closer to a .50 strike. The mean distance from a strike would be about .125, but GLD seems to average like maybe .06-.10., often within .03. It and many other are not 'manipulate'. Yes BBRY is sometimes maniputlated, but not when it pins to a strike. that is an artifact of option strike prices.