Profile
The Quiet Infrastructure of a $700B Market
Every time a Walmart customer returns a TV, or an Amazon warehouse sits on overstock nobody ordered, something has to happen to those goods. A fire sale. A landfill. Or Marcus Shen's platform. B-Stock, which he has run since March 2022, is a B2B auction and direct-sale marketplace that sits between the world's largest retailers and a network of business buyers hungry for inventory at a discount. The company doesn't sell to consumers. It builds the rails that everyone else runs on.
Shen took over from founder Howard Rosenberg not as an outsider but as the operating mind already inside the machine. He joined B-Stock in 2019 as CFO, moved to COO after nine months, and by early 2022 had proven the thesis that Rosenberg had been building toward since 2008: that returned and surplus inventory, treated as a logistics problem, is actually a data problem. Solve the data, and the recovery rates follow.
"Successful retailers are becoming lightning fast and ruthlessly efficient through software, services, and data solutions to manage returned inventory."
- Marcus Shen, 2019
The scale of what B-Stock handles is hard to visualize. In a single year under Shen's leadership, the platform moved 160 million units - including over 40 million pieces of apparel and nearly 10 million electronic devices. That's inventory that once faced a coin-flip between resale and incineration. One-third of returned goods used to be burned for energy. B-Stock is changing that calculation one auction lot at a time.
Clients include the top 10 U.S. retailers. Walmart. Amazon. GameStop. Costco. These aren't companies that trust their excess inventory to anyone. They use B-Stock because it offers something rare in liquidation: transparency, brand control, and optimized recovery rates. In a market where pricing has historically been opaque and outcomes unpredictable, Shen's platform introduces data-driven discipline.
At NRF 2026, Shen appeared on Retail TouchPoints' Retail Remix podcast to talk about what's actually shifting in B2B resale. Not the theoretical future - the current reality. How brands are demanding tighter control over where their secondary-market goods land. How AI is being deployed to manage volatility in pricing and improve recovery. How inflation has reduced the stigma around secondhand goods, fueling downstream growth in ways that benefit every player in the ecosystem. Shen doesn't speculate. He talks about what's happening on the platform today.
The Earth911 podcast captured a different angle - Shen discussing how recommerce intersects with environmental impact. With $890 billion in merchandise returned by retailers in 2024 alone, and the global recommerce market projected to nearly double to $700 billion by 2029, the business case and the sustainability case have converged. Shen operates at that intersection not as a mission statement, but as a market thesis.
Background
From Investment Banking to Yahoo!'s Deals Desk to This
Shen's path to running a recommerce marketplace runs through some of the most consequential corners of the internet economy. He started in investment banking at Houlihan Lokey in the late 1990s, moved to technology banking at CIBC Oppenheimer during the dot-com era, then spent two years at Philips before landing at Yahoo! in 2005.
At Yahoo!, he worked in corporate development during one of the most significant periods in internet history. The deals he worked on: Alibaba - an investment that would eventually be worth more than Yahoo!'s core business. The Flickr acquisition. Yahoo! Japan. Interclick. Hortonworks. Dialpad. These weren't passive investments. They required reading markets, structuring terms, and managing integrations across media, commerce, data, and marketing software.
In 2009, between his two Yahoo! stints, he founded Statalog - his own startup. It didn't become a household name, but it gave him something no corporate role could: the experience of building from nothing. By 2011 he was back at Yahoo! as VP of Corporate Development and Corporate Finance, also serving on the board of Yahoo!7 in Australia.
Post-Yahoo!, Shen became an advisor to KKR & Co, working with their Technology and Media investment teams. That's not a ceremonial role - KKR allocates through advisors who understand how technology companies create and destroy value. Shen was the person they called when evaluating tech and media bets.
Before B-Stock, his last operating role was as CFO and Head of Operations at Content Analytics, an e-commerce analytics firm. He grew their ARR by 400%. That number is what gets you hired as CFO of a marketplace with serious ambitions.
