https://feetr.io/ is entirely lisp.
It's an algorithm which understands momentum in the stock market, and finds where that momentum is flowing to find stocks with a good chance of really high gains. It averaged 9.17% daily increase across 127 stocks last month[0].
Lisp was a conscious decision because it allows a small team to be incredibly productive, plus the fact that it's a live image allows you to connect to it over the internet and poke and prod the current state, which has really allowed a much clearer understanding of the data.