Resolves based on whether I'm in the top 20 of all time, even if the leaderboards expand. Currently I rank #41 on "Top traders" (by profit) and #38 on "Top creators" (by unique traders). I'm ignoring suspected glitches and manipulation, I must be in the top 20 by merit. Resolves YES for "Top traders", NO for "Top creators", and 50% if I somehow crack both leaderboards at the same time. I will extend the duration of this market indefinitely until I enter the top 20 of either of these.
General policy for my markets: In the rare event of a conflict between my resolution criteria and the agreed-upon common-sense spirit of the market, I may resolve it according to the market's spirit or N/A, probably after discussion.
Related questions
@Conflux (was neck and neck between traders and creators for awhile, but I made a lot of end-of-March profit)
@Conflux (and ironically, as The Market got super big, I also made enough profit on it that the ranks stayed close)