Stock Market, Time Series Analysis, Time Series Forecasting, Python, Monte Carlo.
10 Iterations As to be expected, the further into the future, the wider the range (i.e the P10 to P90) of possible prices. (As a rule of thumb , there is an academic paper that says that GBM works best for forecasting when limited to max 2 week lookahead) Simulating A Single Stock Using GBM The web