I actually bought some options on COST.

BTO July 21, 157.5 calls @7.50 on 5 contracts. There is a lot of selling going on today from one institution to another. I think the AMZN news is over done and the decline in COST is over done as well. The customer base for WFD and COST is different and this merger makes no sense to me at this time. I may be wrong but I can wait a month to find out.