I'm not sure why you think the lack of a 4th quarter warning is even relevant. Unlike in Q2 and Q3 when AMD initially offered (false) rosy guidance, and was forced to later correct the deception and warn, at the end of Q3 AMD admitted that Q4 would be as bad as Q2 and worse than Q3, forecasting up to a 13% revenue drop sequentially (13% drop in Q2, 10% drop in Q3, forecasting a 13% drop in Q4).
The recent run up in AMD was solely short term and solely based on the possibility that Q4 would start to show signs of a general rebound. With Intel's solid, but not exceptional numbers released, there is no longer any hope for a generalized Q4 rebound, and all of those speculators who bought AMD "just in case" are dumping it in a hurry.
There is no reason whatsoever to hold AMD long ot intermediate term.