For this market does Grandmaster only mean the title of Grandmaster that can be obtained by any gender and for whicj the Elo threshold is 2500 ?

i believe so based on my understanding currently. has this happened already ? i only saw a IM has happened

Didn’t hear of it happening already. Just wanted to be sure that the title of WGM wouldn’t count regarding this market.

Probably worth clarifying that the IM title (“International Master”) is distinct from and has more stringent requirements* than the WIM title (“Woman International Master”).

As mentioned in @andri‘s comment below, the current highest-rated transgender player** recently became a WIM, not an IM. Her current rating is 2315 and peak rating is 2319.

Player card for Yosha Iglesias:

https://ratings.fide.com/profile/637823

—

*For one thing, the rating threshold for IM appears to be 2400, versus a threshold of 2200 for WIM.

** That I’m aware of. A quick Google doesn’t suggest any other candidates.

ty for the clarification

do we know who the highest-rated trans player is?

Looks like it's Yosha Iglesias who just became a WIM: https://en.wikipedia.org/wiki/Yosha_Iglesias