Investor users ranked by total bounty spending on bounties. This may vary from the value listed in users' profiles because this includes (all?) bounties on deleted posts, which are not included in profiles.
Q&A for developers and researchers interested in open data
-- Users by rep spent on bounties SELECT TOP 100 UserId as [User Link], SUM(BountyAmount) as TotalBountyAmount FROM Votes GROUP BY UserId ORDER BY SUM(BountyAmount) DESC