StockX, the 2015-founded online sneaker, streetwear and collectibles marketplace, has just gone live with its brand-new vintage and pre-loved selling function, StockX Listings. The software, developed with AI, allows users to photograph, list, and sell used goods within seconds.

“We spend a lot of time listening to customer feedback,” says StockX co-founder and CEO Greg Schwartz, speaking exclusively to Vogue Business over Zoom from the platform’s Detroit HQ, backdropped by Kaws figurines and Supreme collectors’ items, alongside a plinthed pair of Nike Air Jordans. “For a while, we’ve had this request of, ‘Hey, I bought something on StockX. I hate that if I wear it a few times, I have to go elsewhere to sell it,” he says, noting a growing appetite among StockX’s consumers to “hunt for rare, unique, one-of-one vintage items”.

While retail has faltered in recent years, the pre-loved market has shown serious growth potential. Schwartz cites the promising forecasts for vintage across the globe. Per data shared by Thredup in 2026, the global secondhand apparel market is set to reach $393 billion by 2030, growing twice as fast as the general apparel market. In the US, StockX’s home market, online resale is set to double by 2030, reaching $48.3 billion and growing an average of 10% year-on-year. By broadening its scope beyond brand-new, box-fresh grails, StockX can aim to take a bigger slice of the pie.

As a private company, StockX doesn’t disclose revenues, but the platform has grown at speed over the last decade. In 2017 — one year post-launch — the company secured a $6 million seed funding injection. From there, the firm continued to raise hundreds of millions of dollars in multiple rounds: in 2020, it raised $275 million in a Series E round, when the business was valued at $2.8 billion, post-money. By 2021, the company was valued at $3.8 billion with $255 million in financing. All of this places StockX in a solid position to broaden its scope.

Of course, there’s already some stiff competition in the pre-loved space. Goat Group — parent company of Goat, Flight Club, Grailed, Sneakers.com, and Alias — was last valued in 2021 at $3.7 billion following a Series F funding round of $195 million, while over the past 12 months, The RealReal has hit $722.53 million in revenue.

One might ask what makes StockX Listing different from these existing players. “Look, it reminds me of when we launched StockX, and people said, ‘Wait, you’re launching a sneaker marketplace in a world where there’s Ebay and hundreds of marketplaces?’” Schwartz says. “We always started with: can we solve a customer problem in a way that is better for the customers?”

Here, Schwartz highlights the AI used in the platform’s development. This, he claims, means that listings are executed “faster than any marketplace”, utilizing AI photo analysis and product-matching software that categorizes the item and groups it alongside similar goods, reducing the scroll time for consumers to find a cheaper version. “We’re showing pricing [for a specific SKU], all to solve some of the pain points that we’ve seen with incumbent listings-based marketplaces,” Schwartz adds. “So, the AI photo analysis-driven listings flow, which we believe will be the fastest out there, the pricing insights, and the simplicity of navigation are just some examples of how we think about product innovation.”

A highly engaged user

With more turning to vintage across the industry, the already strong consumer base StockX holds has potential for serious return on investment. According to the company’s data, StockX has more than 30 million visitors monthly on average, and since launching in 2016, the company has facilitated millions of sellers. So far, the platform has serviced customers from more than 200 countries and territories. Today, around 60% of users are under 35, and over a thousand sellers have sold more than $1 million in goods. Contrary to streetwear stereotypes, the platform also has a healthy female audience, with 40% of buyers identifying as women.

Leaning on this successful foundation, Schwartz tells Vogue Business that StockX Listings, much like the rest of the business, will distinguish itself by offering intelligent, proprietary data to consumers who want to understand how the price of a good has fluctuated or stabilized over time. For new and deadstock items sold on the platform, this has evolved in tandem with growing usership and should — theoretically — follow suit for pre-loved listings. “Looking at not only the retail price but the resale price for a product that’s new or deadstock condition, is a really key reference point to price something that’s a used product — say, a used pair of sneakers,” says Schwartz. “But we’re also going to be building [the pre-loved] data set every day, and that was so much of the fun in building the original, core StockX: the data set evolved and got better and better over time.”

For Schwartz, it was important this new venture aligned with the core tenets of StockX’s business: trust and efficiency. These are underpinned by the StockX verification process, where products are authenticated by StockX — at in-house authentication centers around the globe — before being shipped to buyers, or shipped from assessed StockX-verified sellers.

The platform is also investing in new technology to stamp out bots and illegitimate sellers, as well as more advanced content moderation, to ensure listings are accurate and linked to authentic products. More broadly, every listing on StockX is appraised before it can go live, proactively preventing dubious products entering the market, instead of trouble-shooting after the fact. Schwartz also highlights the marketplace’s strict buyer’s warranty devised in case any products are wrongly verified or the incorrect item is shipped.

Introducing an ecosystem for vintage while maintaining this optimized and reliable infrastructure is the plan. Of course, it’s an interesting pivot given that the business’s original USP was in exclusively selling brand-new products, complete with the original packaging. Nonetheless, Schwartz sees it as the logical next step, allowing the company to capitalize on sellers and buyers who are otherwise engaging in the pre-loved market elsewhere. In essence, StockX Listings models itself on streamlining a multi-app process, ensuring instead that consumers can shop using just one seller tool.

StockX Listings will launch this new functionality first with a curated group of resellers, focused on apparel and sneakers, waiving seller fees for launch. “We have a lot of sellers today that are selling deadstock that also have a certain amount of inventory in used sneakers,” says Schwartz. “So we started with both sellers within our community and new sellers that have unique and high-quality offerings across the categories.” Despite this initial focus on StockX’s flagpole categories, much like the broader business — which began with sneakers and apparel and now offers everything from Pokémon cards to tech — the pre-loved offering will also expand “aggressively”. After this initial launch, the marketplace will open selling to the public “as quickly as possible”, Schwartz says.

Schwartz understands pre-loved as a core chapter in StockX’s business trajectory, helping it develop as a multi-experience marketplace while cementing the already established features. As well as the Listings feature, plans for a Stock Live feature — providing real-time interactive commerce — will also join the arsenal later this summer.

For the foreseeable, Schwartz will be monitoring pretty standard metrics of success — continued growth and consumer engagement — although he does highlight the importance of qualitative feedback, too. “As I’m traveling around the world, meeting with customers and our community, I’m very keen to get their feedback on the experience, which we’ve been working on for several months, and testing internally,” he says. “That feedback is what will drive the evolution of this experience.”