The CEX Power Map: How Upbit's 78% Dominance Reshapes Token Economics

ium Research — David, CEO — May 11, 2026 Canonical: https://iumlabs.io/blog/upbit-dominance-how-78-percent-market-share-reshapes-token-economics

Key Takeaways

In most markets, getting listed is one of many distribution steps. In Korea it is the distribution step, because won-denominated liquidity does not spread across venues, it concentrates, and overwhelmingly on one. The regulator's own numbers make the point starkly, and they rewrite how a token's economics behave the moment it touches the Korean market. The argument of this report is narrow and uncomfortable: in a market this concentrated, almost every decision you make about a Korean launch is downstream of one listing decision, and teams that do not internalize that order of operations spend their budget in the wrong sequence.

1. A Concentrated Market

According to Financial Supervisory Service data reported by Seoul Kyungjae, Upbit took 71.6% of all domestic crypto trading volume in the first half of 2025, with Bithumb a distant second and the remaining exchanges effectively rounding errors.

Embedded post: https://twitter.com/cryptorover/status/2059987339598856220

[Figure: Bitcoin.com / Kaiko, market share of major Korean exchanges with Upbit dominant]

Item Value
Upbit 71.6
Bithumb 25.8
Coinone 1.8
Korbit/GOPAX 0.8

Korean crypto exchange share of domestic trading volume, H1 2025. Source: FSS data via Seoul Kyungjae / Cryptonews

71.6% — Upbit's share of South Korean domestic crypto trading volume in H1 2025, on 833 trillion won ($642B) of transactions (Source: FSC/KoFIU VASP survey)

[Figure: Cryptonews, "Upbit Corners 72% of S Korean Crypto Market as Smaller Exchanges Face Extinction"]

The user numbers are just as concentrated: of 10.17 million exchange customers, 53% are on Upbit and 37% on Bithumb, leaving the other three venues to split barely 10% between them. Read those two distributions together and the shape of the market is unmistakable. Volume concentration of 71.6% sitting on top of a user base where Upbit holds 53% means Upbit's traders are not just more numerous, they trade more intensively and against deeper books. The volume share runs ahead of the user share, which is exactly what you expect when liquidity begets liquidity: the venue with the deepest order book attracts the most active traders, who in turn deepen the book further. That feedback loop is why a 53% user lead translates into a 71.6% volume lead, and why the gap is more likely to widen than to close on its own.

96% — combined share of the Korean market held by Upbit and Bithumb together, a duopoly with one dominant pole (Source: Kaiko)

The two-venue picture deserves its own table, because the choice a project actually faces is not "list in Korea" in the abstract, it is "which of these two pools do I prioritize, and in what order." The figures below are all drawn from the same FSS reporting and Kaiko data already cited above.

Dimension Upbit Bithumb
H1 2025 volume share 71.6% 25.8%
Share of 10.17M exchange users 53% 37%
Role in the duopoly Dominant pole Distant second
Price-discovery function Reference price for won pairs Trades against Upbit's reference
Combined control of market 96% with Upbit 96% with Bithumb

The table makes the strategic reality concrete. There is no fragmented field of venues to arbitrage across and no third option with enough depth to matter. The decision is binary and sequenced, and the sequencing is the whole game. Our deeper read on how the two venues differ on speed, promotional muscle, and regulatory risk lives in the Korean exchange listing strategy analysis.

2. Why Concentration Changes Token Economics

When one venue holds the majority of won liquidity, its listing decision is effectively a liquidity switch. Listed, a token inherits deep won order books, retail reach, and the kimchi-premium dynamic that can open a pricing gap with global markets. Unlisted there, the same token can have a thriving global market and almost no Korean liquidity at all.

Embedded post: https://twitter.com/CoinDesk/status/2012137044001292789

[Figure: Kaiko, Korean exchange volume share around the Bithumb zero-fee period]

"The domestic crypto market has effectively solidified into an Upbit monopoly." , Seoul Kyungjae, citing Financial Supervisory Service data

That is not hyperbole from the data. Industry officials quoted in the same reporting warned that when a single exchange dominates listing policy and fee structures, the concentration risk spreads to the whole market. For a project, it means listing leverage and timing sit in very few hands.

The mechanism is worth slowing down on, because it is the reason the rest of this report follows. In a fragmented market, a token's reference price is an average struck across many venues, and no single listing controls it. A bad listing on one exchange is diluted by the others. In Korea the opposite holds. The venue that intermediates 71.6% of volume is, in practice, the venue that sets the price the rest of the market quotes against. When that share sits in one place, the price discovered on the dominant book is not one input among many, it is the input. A thin or mistimed listing there does not get averaged away; it becomes the reference everyone else trades against, including the global market through the kimchi-premium channel. Concentration converts a single venue's order book into the token's de facto Korean price oracle, which is why the listing stops being a marketing line and becomes the single most consequential market-structure decision a project makes.

That also means the kimchi premium is not a quirk to be admired from a distance. It is a direct readout of how tightly won liquidity is bottlenecked through one venue. The same concentration that gives Upbit its pricing power is what lets a Korea-only demand gap persist instead of arbitraging flat. For the operator, the takeaway is that the premium and the dominance are two faces of one fact, and both are reasons to treat the listing as a liquidity event rather than a banner.

3. The Listing Is a Liquidity Event, Not a PR Event

The common mistake is to schedule the listing like a press milestone, announce it, celebrate it, and move on. In a concentrated market the listing is where price discovery actually begins, which means depth, market-making, and demand all have to be ready on the same day rather than chased afterward. A listing with no liquidity plan is a launch with no runway.

Embedded video: https://www.youtube.com/watch?v=FCBWt2U_bmQ

The first weeks set the reference price and the depth that later flows trade against. Get them right and the book compounds. Get them wrong and you spend the next quarter fighting a thin, jumpy chart that scares off exactly the patient capital you wanted.

The asymmetry here is the whole point. In a fragmented market a weak opening week is recoverable, because liquidity can build on another venue and migrate, and the reference price is forgiving because no single book defines it. In a market where one venue carries 71.6% of volume, the opening book on that venue is the price memory of the entire Korean market. Patient capital reads the first weeks of depth and volatility as a signal about whether the token is tradeable at size, and that read is sticky. A chart that gaps and thins in week one does not just cost a few early traders; it sets a depth expectation that suppresses the very flows you needed to deepen the book. The cost of getting the liquidity event wrong is therefore not linear, it compounds against you in exactly the same way a good opening compounds for you. This is why the discipline of sequencing awareness and trust to the listing date, covered in our Korea GTM stack framework, matters far more in a concentrated market than in a fragmented one.

4. What This Means for Operators

Sequence everything to the listing date, not a global calendar. Load awareness and trust in the weeks before it so demand exists when liquidity arrives. Have market-making and depth arranged for day one. And budget for the post-listing window, because in a concentrated market the difference between a durable book and a dead chart is decided in the first weeks, not the first hours.

There is a second-order implication for how you read your own metrics. Because Upbit's book is the reference, the number that matters is not launch-day volume, it is depth that survives the first weeks at a stable spread. A one-day candle on a 71.6%-share venue is easy to manufacture and tells you almost nothing about whether the book will hold. Resist optimizing for the spike. The patient capital you are trying to attract is reading the same chart you are, and it is looking for evidence that the liquidity is real after the launch attention fades.

Embedded video: https://www.youtube.com/watch?v=PeMPMSIDRTw

5. What Breaks It

The recurring failures are concentration-specific. Treating the listing as a finish line rather than a starting line. Spending the awareness budget weeks before there is anywhere for primed demand to trade. And arriving with no liquidity or market-making plan, so the first wave of volume has nothing to trade against and the book thins immediately. Each of these is recoverable in a fragmented market and close to fatal in a concentrated one.

There is also a regulatory counter-case that cuts against assuming the duopoly is static. The same concentration that makes a dominant-venue listing so powerful is exactly what regulators have flagged as a systemic risk, with officials in the FSS-sourced reporting warning that one exchange dominating listing policy and fees spreads concentration risk to the whole market. A project that bets everything on the current structure should hold the possibility that listing policy, fee rules, or the duopoly's balance shifts under it. The defensive posture is the same one that wins in the base case: do not treat any single venue as a permanent given, build real depth rather than rented volume, and keep the global book healthy enough that Korea is an amplifier rather than a single point of failure. The point-in-time figures here move with market cycles, and a serious operator plans for the structure to evolve rather than freeze.

6. How We Run It

We treat a Korean listing as the liquidity event it is: listing advisory to sequence the venue and timing, and exchange marketing to bring funded, repeat traders into the book rather than one-day attention. The metric is depth that holds, not a launch-day candle. If a Korean listing is on the roadmap, that is the conversation to start.

Sources

Upbit and exchange share, volume, and user figures: Financial Supervisory Service data reported by Seoul Kyungjae, via Cryptonews. Duopoly concentration (~96%): Kaiko, The State of the Korean Crypto Market. Video: "How South Korea's Crypto Market Skyrockets in 2025". Figures are point-in-time and move with market cycles.

This report reflects ium Labs' operating view and is intended for general information, not investment advice.

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