Mapping the real C++ quantitative finance use cases in America shows where that language creates an edge, what it costs to run, and where the next decade of value will come from. This piece lays out the use cases, the benefits, the risks, and the long-term opportunities without the hype. The core C++ quantitative finance use casesFour jobs account for most of the language’s presence in American trading. The second risk is talent. The market opportunity in numbersThe long-term opportunity tracks the growth of the markets these systems serve.