Continuous changing cell values - record highest and lowest values in seperate cells

Hallo,

I maintain a spreadsheet that records, per share code, the daily share price which changes on a continuous basis. For every share code, I want to record the highest and lowest historic share price in 2 seperate cells.

I need help to make the above possible. I don't have any coding background.

I attach a spreadsheet as an example of my current setup.

I will appreciate any help.

Thank you
Attie