Unfortunately not, I'm afraid. I would guess they have much of their execution infrastructure in the same data centre as the exchanges they execute on.

There's a considerable early period (1980s, 1990s) when Renaissance was turning up amazing profits when electronic trading largely didn't exist. That would suggest other methods.

Perhaps they were just market making back then as well? See this link: https://www.wallstreetoasis.com/forums/is-renaissance-techno...