I'll chime in a tad here. My understanding is that MMs regularly short to fill orders, nothing revealing about that, but they also know how to play games with naked shares in order to avoid the time limits. I've seen plays where I've been convinced that before the 3 days pass they play hot potato with these shares and sell them to another MM who then does the same thing, thus they never reach the 3 day limit, they just simply play ping-pong with them. I may be way off base, but sure have seen dealings giving that appearance. Any thoughts?