I tried analyzing the past ten years of FIDE rankings by using Monte Carlo sampling to simulate future ELO trajectories and got the following results:

Magnus highest rated in July 2025: 54.6%

Magnus stays #1 throughout 2025: 23.4%

Magnus drops below 2800 before 2026: 35.2%

Someone breaks Magnus's peak by 2026: 19.4%

But then you actually look at the Elo trajectories of the current top-ranked players and it looks like this. Or you can compare him to the other top players in, say, 2015 and note that while other players may "fall off", Magnus Carlsen does not "fall off", but consistently cruises at an altitude that stratifies chess rankings into into "Magnus Carlsen" and "everyone else". So maybe something's wrong with my code, or maybe puny human statistics don't work on entities of this caliber. I think it's worth at least, like, whispering in the direction of doubt, though. If only to reassure myself that the man is mortal and bound by the laws of physics and etc.

@cherrvak I'm not sure how your code works, but I think it's <1% for anyone to break Magnus's peak rating that soon.

@creator @mods This is still ambiguous.
From https://qc.fide.com/faqs/ "FIDE publishes its new rating list on the last day of every month, to come into use from the first day of the new month."

So at the close time, the July rating list will have been published (assuming no delays), but the June rating list will still be the effective list. So will this resolve based on the June list, or the July list?

FAQs – Qualification Commission

@DanielTilkin interesting. The goal fo the market is to discuss Magnus's rating through the close date. If the "come into use" on July 1st "in effect" number refers to the period prior to that time (which it seems that it must do) then it seems to me that that number is the last one validly related to this claim.

i.e. the claim is about magnus's rating through end june 2024. On june 30 a number is publicly released relating to his rating during the period. The number as released is noted to come "into effect" on july 1st. Yet it clearly refers to the period we care about. So, that number counts for this market.

Market close time seems wrong? When precisely is "mid 2025"

@MingweiSamuel thanks fixed.

@Ernie Still not clear to me what exactly counts at 'mid 2025' here: Is this 30 June 2025 (which would mean this would resolve based on the June rating list) or 1 July 2025 (which would mean this resolves based on the July rating list)?

or july 2, which is the 183rd day of the year (365/2=182.5)

I use the quarter system. Sorry for any confusion caused by this