CMA opens formal review of eBay's $1.2 billion acquisition of Depop from Etsy, marking the UK competition regulator's latest intervention in the online consumer marketplace sector
The Competition and Markets Authority (CMA) has announced it is seeking views from interested parties on eBay's planned $1.2 billion acquisition of Depop from Etsy, formally initiating its merger review process. The CMA's intervention triggers the UK's mandatory pre-notification framework under the Enterprise Act 2002 (the primary UK statute governing merger control), under which the regulator can investigate any transaction meeting the relevant turnover or share-of-supply thresholds. Depop is a peer-to-peer (person-to-person resale) fashion marketplace primarily used by younger consumers, with particular strength in vintage and second-hand clothing. Etsy acquired Depop in 2021 for $1.625 billion and is now selling it at a loss. eBay is one of the world's largest online marketplace operators, and the combination raises questions about competitive effects in the UK secondary fashion resale market, where Depop, Vinted, and eBay's own fashion category compete for the same consumer base. The CMA will assess whether the transaction would result in a substantial lessening of competition (SLC — the central legal test under the Enterprise Act). At Phase 1, the CMA will gather market intelligence before deciding whether to clear the deal, accept undertakings, or refer it to an in-depth Phase 2 investigation.
Why this matters
The CMA's rapid engagement with eBay/Depop reflects the regulator's continued assertiveness in digital marketplace M&A, following its high-profile interventions in Meta/Giphy and Microsoft/Activision. The SLC test requires the CMA to identify theories of competitive harm — here the most likely focus will be whether combining eBay's marketplace scale with Depop's brand-loyal younger demographic forecloses rivals like Vinted in the UK. The deal also raises product market definition questions: is second-hand fashion a distinct market, or part of a broader online retail market? Firms advising the parties will need to build a robust economic case on market definition before Phase 1 submissions are due. The 'why now' context is Etsy's financial pressure to monetise the 2021 acquisition at a significant write-down — a pattern of distressed digital asset disposals that is generating a second wave of CMA merger filings.
On the Ground
A trainee on a CMA Phase 1 merger review would be assisting in the preparation of the merger notice submission — drafting the market definition and competitive effects sections, compiling the required data on UK turnover, share of supply, and customer overlap. Regulatory notification drafting and coordinating responses to CMA information requests (which can run to hundreds of pages of documentary disclosure) would be core tasks.
Interview prep
Soundbite
CMA scrutiny of eBay/Depop turns on whether second-hand fashion is a distinct market — the answer defines the entire competitive analysis.
Question you might get
“What is the 'substantial lessening of competition' test under the Enterprise Act 2002, and what theories of harm would the CMA most likely focus on in reviewing eBay's acquisition of Depop?”
Full answer
The CMA has opened a formal review of eBay's $1.2 billion purchase of Depop, putting one of the most recognisable second-hand fashion platforms through UK merger control. The central legal question is market definition: if the CMA concludes that peer-to-peer fashion resale is a distinct market rather than part of general online retail, eBay and Depop's combined share will look very different — and the risk of a Phase 2 referral rises sharply. This fits the CMA's consistent pattern of scrutinising digital marketplace consolidation, from Giphy to Activision, and reflects the regulator's view that network-effect-driven platforms warrant enhanced scrutiny. For law firms, Phase 1 work is intensive and fast-paced, with tight submission deadlines and frequent CMA information requests. I'd expect the competitive overlap in the 18–35 UK fashion resale demographic to be the CMA's primary concern.
My notes
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