clc,clear;
%模拟次数
NN = 100000;
% 初始股价
c = 291.30;

a = zeros(NN,1);
for i = 1:NN

t = c*cumprod(1+normrnd(0.00146794470636868,0.00493886978597428,[104 1]));
a(i,1) = t(end);
end
b = cumsum(a)./[(1:length(a))]';