May 17: 2021’s fastest growing marketplace businesses 

A list of 2021's top 10 fastest growing marketplace businesses.

Source: Andreessen Horowitz
Published: March 2021

2021’s fastest growing marketplace businesses 

An online marketplace is a type of e-commerce website where product or service information is provided by multiple third parties. 2020 demonstrated the flexibility and resilience of the consumer-facing marketplace model, as many businesses managed to pivot—and even thrive—within a restricted and transformed consumer market. 

Compared to the 2020 rankings, there are five newcomers to the top-ten list of fastest growing marketplace startups and private businesses, holding rankings six through ten. Airbnb, Doordash, Postmates, and Poshmark, all in the previous top ten, have “graduated” from the list because they have been acquired or filed for an initial public offering (IPO) in the stock market. 

Fastest growing marketplace businesses, 2021

1. Instacart.
Headquarters: San Francisco, CA
Description: On-demand delivery service
Category: Food/beverage

2. Valve
Headquarters: Bellevue, WA
Description: Video game development and distribution; hardware
Category: Games

3. Vacasa
Headquarters: Portland, OR
Description: Vacation rental company
Category: Travel

4. StockX
Headquarters: Detroit, MI
Description: Buy and sell limited-edition items
Category: Streetwear

5. Rover
Headquarters: Seattle, WA
Description: Dog walking and pet services
Category: Pets

Headquarters: Los Angeles, CA
Description: Buy and sell items, exclusive access to drops/collections
Category: Streetwear

7. ThredUP
Headquarters: Oakland, CA
Description: Online consignment and thrift store
Category: Fashion

8. Viagogo
Headquarters: San Francisco, CA
Description: Secondary marketplace for tickets to live events
Category: Tickets

9. Turo
Headquarters: San Francisco, CA
Description: Car sharing marketplace; rent or list local cars
Category: Transportation

10. Outschool
Headquarters: San Francisco, CA
Description: Live online classes and clubs
Category: Education


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