The protagonist in Billions seems to be basically an evil version of Dalio. I think characters based on him have made it to the screen a few times already...
Billions is actually based on Steven Cohen and his hedge fund, SAC Capital. It was bumped down to a family office for insider trading, and subsequently rebranded as Point72.
Aside from basic inspiration, the plot bears almost no resemblance to the actual hedge fund or Cohen himself.
