Whenever you have a problem in Yahoo Finance, then the one place I have found to get the attention of a Yahoo staff member is to place your query in the category 'Yahoo Products,' subcategory 'Yahoo Finance.' That is the place which is constantly monitored by Yahoo staff members and where you have an almost certain chance to get the attention of and an answer by a competent Yahoo staff member. They have been quite useful to me in the past in helping me fix a problem or at least I got an explanation of what was happening. They also can tell their programmers to get working on a problem, which they obviously did on your MA options.

The MasterCard stock (symbol MA) did a 1 for 10 this week.

So the options have also changed. When will Yahoo update the MA stock option data to reflect this split?

This option information no longer is correct and needs to be fixed ASAP!

http://finance.yahoo.com/q/op?s=MA+Options