Buildings stand in the skyline of downtown San Francisco, California, U.S., on Thursday, May 7, 2015. San Francisco Mayor Ed Lee will seek voter approval for the first housing bond since 1996 as his city becomes the least affordable U.S. housing market and uproar grows about gentrification fueled by the technology boom. Photographer: David Paul Morris/Bloomberg
The San Francisco-based Instacart is considering going public through a direct listing. David Paul Morris/Bloomberg

US grocery delivery app Instacart plans direct listing