The graph or FQL (which has the same data) do not list the relevant property in any of the tables that I've checked.
The order of posts in the "stream" does not change with items being pinned.
To clarify just in case, I am asking about the new timeline feature where you can click "edit" on a post and then select "Pin to top". I have to be able to find the pinned post via API or FQL or RSS or any other reasonably reliable way, and I don't need to make a post pinned - just to query for it.
Thank you.
TJ
There is no current way to get this information. You should put in a bug with Facebook at http://developers.facebook.com/bugs.
I looked at both beta docs as well as the public documentation too.
http://developers.beta.facebook.com/docs/reference/fql/stream/ and http://developers.facebook.com/docs/reference/fql/stream/
It's possible that the new postings are a new "type", but here's the list of current stream types.