Antonije Mirkovic on Instagram: "You’ve probably only heard about NumPy and pandas... but there’s an entire quant Python stack nobody talks about. These libraries power portfolio optimization, option pricing, and algorithmic trading research, yet most beginners have never touched them. I put together a cheat sheet breaking down what each one does and how to use them in real quant projects. 👉 Comment «STACK» and I’ll send it to you."