From what I've heard Jane Street's bread and butter isn't latency sensitive market making on public equities, but creation/redemption arbitrage on ETFs, especia

From what I've heard Jane Street's bread and butter isn't latency sensitive market making on public equities, but creation/redemption arbitrage on ETFs, especially ones that hold a lot of relatively illiquid stuff like various fixed income ETFs. Creating and redeeming those ETFs might involve pricing an emerging market sovereign or corporate bond that might have only traded a few times in the last year. So their expertise is more around smartly trading really weird stuff as opposed to the pure speed players like Jump, Citadel or Virtu Financial. That said JS is probably in a lot of different products, some more latency sensitive than others, but speed isn't what they are known for.