The MaxPain sites are using the ATI QZA options for their raw data, and wrongly stating $20. Check their raw data against actual.
Not that I think there is enough OI to have a significant effect. Most of the 36K AMDWU $22.50 Puts are probably a hedge fund play and IMHO will not be cashed in......
It's options expirations for equities and that would include AMD. I was very busy with college stuff this week and have been in cash most of the week and haven't really watched that closely. I may have some time over the weekend to look around.
Still waiting for that X2 5800+ to start shipping.