How to find corresponding values for one cell array in another?

Hi, I have two cell arrays, both have 688 cells with [18,1] entries. One cell array has values of stock price and the other has the dates. I want to see the minimum values of stock prices and simultaneously find the dates for those prices. I have used cellfun to find the minimum values but don't know how can I get the dates in the other cell array for which that minimum prices occurred. Help is much appreciated.

[the cyclist]

Can you upload your data (or a small, representative sample) and the code you wrote to find the minimum?