It surely lacks basic important features like sorting through alphabetically, highest to lowest holdings, highest to lowest in profit, vice versa, etc. Also, I really don't like your user interface. It looks so plain and boring in my opinion. Pretty much like a mid 2000s web design. Your interface is responsive though, so that's a plus. I suggest using Bootstrap[1] for your UI/UX.

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[1] https://getbootstrap.com