whenever someone buys at market, a sell order goes at market...

whenever someone buys at market, a sell order goes at market dropping it back. every five seconds the previous number is halved and subsequenly sold at market until it gets to one share and then stops....black box trading...go figure!

have dipped my toe in the water recently with CRC. Would like to add a few more at the right prices of course.

What strike are CRCO?