Grocery-delivery app Instacart has been among the biggest beneficiaries of Americans being stuck at home during the pandemic. But its executives don’t want future buyers of its stock to worry about what happens when that ends.

The company, which hopes to become a major challenger to Amazon by selling a wide variety of products from retail stores and delivering them quickly, recently discussed waiting until the fourth quarter for its stock market debut, or at least several months after the vast majority of American adults are expected to have been vaccinated against the Covid-19 virus, said two people with knowledge of the situation. That will make it easier for investors to gauge how fast Instacart’s business may grow following the pandemic. Instacart had been previously expected to go public early this year.