No. There's one that made noise about it, but I personally know more than one other from working on their code. Not going to name anyone because I'm not sure they want their tech decisions publicized.

Also some performance-sensitive chunks of wall street itself (depending on how you define "wall street itself". And "performance sensitive" (what I worked on was more "high throughput" than "no pauses".).) run on java.

TBF, I write a lot of java, so my perspective is probably biased, but I can assure you, it's out there.

Many companies did this in the past. Nowadays Java, Go, etc GCed languages are still used but not for the hot path anymore. They are a couple million times slower than what we need.