with a holding of 1,350,00 for sale, it should easy to narrow it down to a handful of individuals IMO... once (and IF) the seller is taken down, we can get some broker data and see who was the seller, that can narrow it down further... until then it will only be wild guesses about the identity of the seller...
Anyone has the Top 50 list? that would have the names of all those who are holding that kind of a number....