Players can only become grandmasters once a year.
What has been the highest rating ever held by a player who was not, at the time, a grandmaster?
What has been the highest rating ever held by a player who did not, within the year following, become a grandmaster?
What has been the highest rating ever held by a player who has not become a grandmaster yet?
I don't have access to the old stats but currently the highest rated, active IM is Stanislav Bogdanovich from the Ukraine at 2590.
Also, I think the titles are awarded quarterly.
Highest ever non-GM was Vladimir Kramnik when he was an FM.
Players can only become grandmasters once a year.
What has been the highest rating ever held by a player who was not, at the time, a grandmaster?
What has been the highest rating ever held by a player who did not, within the year following, become a grandmaster?
What has been the highest rating ever held by a player who has not become a grandmaster yet?