Jane Street Group just posted some eye-popping numbers for Q3—pulling in a massive $6.83 billion in net trading revenue. That's the kind of performance that puts them right up there with Wall Street's heavyweight players. Word on the street is they're cruising toward what could be their best year on record. The firm's been quietly dominating trading desks, and these figures pretty much cement their position among the elite. When you're generating that kind of revenue in a single quarter, you're definitely doing something right in today's volatile markets.