WienerProcess
WienerProcess[μ, σ] represents a Wiener process with a drift μ and volatility σ.
WienerProcess[]represents a standard Wiener process with drift 0 and volatility 1.
Examples
proc = WienerProcess[]RandomFunction[WienerProcess[], {0, 1, 0.01}]Please visit the official Wolfram Language Reference for more details.