Instacart's CEO Fidji Simo and executive chairman Apoorva Mehta, seated side by side in front of trees
Fidji Simo (left) took over as CEO of Instacart in August 2021 from cofounder Apoorva Mehta (right).
  • Instacart shares recently fell below its $30 IPO price.
  • Finance professor Aswath Damodaran posted a harsh analysis of the company's core business. 
  • CEO Fidji Simo built an impressive ads business, but the main grocery delivery operation is tough.

To have a healthy digital advertising business, you actually have to have something else substantial sitting behind it, luring customers to visit your site and hopefully spend money.