Nofluff, thanks. That site was down for quite awhile, but it is good to see it back up again. One other thing to remember, however, is that sometimes the MMs will hedge their positions with other instruments, so the MP may not be precise, especially when there is not a huge difference in the open interest over a tight range of strike prices. Also, there are times that market just ignores MP completely, i.e. it is just one more indicator that might have some positive correlation to future market moves.
Market Data 
Markets 
AI
