Carpathian is followed by a lot of market pros, so it seems, so you'd expect a broad leak. I saw the same with Ventana - it popped by 20%, I didn't know why, then they release some new holes 2 days later and it becomes obvious it was a leak.
I don't see GNH getting as heavily leaked as CPN or VEN - not enough big boys following it yet, I'm assuming. Who can leak for GNH? Frank, Jim Tilsley, and... I dunno, the guys on this board?