RE:RE:curiousthe Angel theory makes sense. I can see a strategy like this at least being able to prevent a flash crash by putting up a series of decent sized price walls. Seen a few of those before and they are not fun especially when the bid side is thin. The crasher comes in and sells a minimum of shares to drop the price, then picks up the shares available at the lower level price where there is a "stop". Rinse and repeat. Drop the price another 5 or so cents and scoop up all the shares at lower "stop" levels below the current price.