Pyramid fading is when a stock is really tanking fast, so say it's down 5 pts already and it's bid at 45. You buy 500 at 45, 800 at 44.6, 1200 at 44.2, 1500 at 43.7, something like that, so say you accumulate 5k shares, your cost basis it 42.5 Then if it bounces 3/4, you are profitable (net) on your position, even though if you sell at 43.25, your first buy is 1.75 underwater. This is a trading strategy that you can use if you have a lot of capital. As for specialists, It is my hunch, that a lot of them are poor traders, but have always just been successful pyramiding. An example is dis. He just lets is sit there, and he scalps nickles, but as it moves further up, you'll notice that the offer gets bigger and more active, so he's shorting, in a pyramid fasion. Instead of every .4 like in the above example, he's pyramiding every cent or 2 up. Then once the buyer leaves for a minute, he'll smack the stock down really fast, and take a half point profit on his half million shares short. IF the buyer comes back, he'll let it go back up again and short to him. Otherwise, he'll knock it lower, and start pyramiding to the downside getting long in anticipation of the buyer comming back. It's very rare that the stock moves more than 2 points in one direction during a week long period. Just a small consolidation as he buys a half million, moves it 3/4 and sells that half mil, over and over again every day or 2.