The meaning of quantitative changes a bit with time and context.
I would say the more "bayesian / sell side / derivative pricing" kind of meaning exists since the late 70s, the more "frequentist / buy side / let's hire 100 physics PhDs" meaning came prominent in the early 2000s. (as a general feeling).
I would say the more "bayesian / sell side / derivative pricing" kind of meaning exists since the late 70s, the more "frequentist / buy side / let's hire 100 physics PhDs" meaning came prominent in the early 2000s. (as a general feeling).