IBKR is currently selling at $75 billion with $3.7 billion in EBIT. NT probably isn't profitable otherwise they wouldn't have sold. NT is more niche than IB so I guess futures only brokers don't make much money. I'm sure the big money is in stock PFOF trades like Robin Hood, Fidelity or Schwab. I bet Schwab also makes a lot of money in cash management.
very well deserved by Ray and his team. They built a great product over the years. I was there for most of Ninja journey.