Instacart
- 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.