Seoul, May 15, 2026. Global exchange OKX, one of the world's largest crypto platforms by trading volume, and South Korean brokerage Korea Investment & Securities are separately in discussions to each acquire roughly 20% stakes in Coinone, South Korea's third-largest crypto exchange, according to industry sources cited by Yonhap and Bloomingbit. Coinone confirmed the talks on Thursday but said no deal has been signed.

"We are discussing strategic equity investments and partnerships with multiple companies, but nothing has been finalized," a Coinone official told the Korea Herald.

The reported transaction would be structured through newly issued shares rather than a transfer of existing holdings. That approach would inject fresh capital into the exchange while leaving its current management largely in place, at least in the near term. Neither OKX nor Korea Investment & Securities had issued public statements confirming the talks as of publication time.

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A Market Ripe for Consolidation

South Korea is one of Asia's most active retail crypto markets. Average daily trading volume runs around $3.7 billion, and as of late 2025 the country had 11.33 million verified crypto users, a per-capita participation rate that rivals any jurisdiction globally, according to CoinGecko and Tiger Research. Despite that scale, the market is heavily concentrated: Upbit and Bithumb together account for roughly 87% of won-denominated trading. CoinGecko and Tiger Research data from 2026 place Coinone's share at around 10%.

Coinone is not standing still. According to company figures, the platform grew its market share from roughly 0.5% to approximately 7.1% between January 2025 and an earlier measurement point, while doubling daily active users. The 10% figure cited above and the 7.1% figure likely reflect different measurement periods or methodologies; both are included for context.

The exchange lists over 200 digital assets and, like all licensed Korean venues, operates exclusively in Korean Won, a regulatory requirement under the country's virtual asset service provider (VASP) framework.

Still, Coinone entered these talks under significant regulatory strain. In April 2026, South Korea's Financial Intelligence Unit (FIU) fined the exchange 5.2 billion won (approximately $3.5 million) and imposed a partial three-month business suspension running from April 29 through July 28. Regulators cited roughly 70,000 unverified customer accounts, 10,113 trades routed through 16 unregistered overseas exchanges, approximately 40,000 client verification violations, and approximately 30,000 transaction restriction failures.

CEO Cha Myung-hoon received an official regulatory reprimand.

During the suspension, new customers cannot deposit, withdraw, or conduct external virtual asset transfers, though existing users retain full trading access.

That compliance record is directly relevant to any incoming investor. Whoever takes a stake in Coinone will need to demonstrate to regulators that remediation is credible and substantive. The exchange has attracted sustained foreign interest for some time: as recently as January 2026, Coinbase had reportedly explored an investment in Coinone, according to CoinTelegraph, underscoring a pattern of international attention that predates the current OKX discussions.

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The Foreign Ownership Question

If completed, the OKX deal would mark only the second time a major global exchange has taken a meaningful stake in a Korean trading platform. The first case was Binance's acquisition of a 67% share in Gopax, announced in February 2023. That deal sat under FIU review for more than two years before final regulatory clearance was granted, setting a clear precedent: foreign participation is permissible, but regulators demand full compliance alignment before approving any transfer of control.

OKX would face the same scrutiny. South Korea's proposed Digital Asset Basic Act, expected to be enacted in 2026, would cap individual ownership at 20% and corporate ownership at 34%. As of publication, the bill had not yet been enacted.

CEO Cha Myung-hoon holds approximately 19.14% of Coinone directly, a stake that would sit at the individual ownership threshold should the new law pass.

The ownership structure could come under pressure if the new law passes, making strategic recapitalization not only financially attractive but structurally necessary.

Coinone's existing shareholder register includes The One Group at 34.30%, Com2uS Holdings at 21.95%, Com2uS Plus at 16.47%, and CEO Cha Myung-hoon at approximately 19.14%.

Korea Investment & Securities, the other prospective investor, is one of South Korea's larger brokerage houses, recording net profit exceeding $1.3 billion in 2025. The firm previously offered Contracts for Difference products but suspended those following the 2023 CFD stock manipulation scandal in South Korea, providing a clear strategic motivation to pursue new growth avenues in digital assets.

The involvement of Com2uS, a major Korean mobile gaming company, is worth noting: South Korea remains one of the world's most active markets for gaming tokens and NFTs, and any recapitalization that improves Coinone's compliance posture and capital base could benefit developers building in those segments.

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Broader Implications for Asian Crypto Markets

The Coinone talks are part of a wider wave of traditional finance moving into Korean crypto. Earlier this year, Mirae Asset agreed to acquire 92.06% of Korbit for approximately $96.7 million, a deal still under Fair Trade Commission review. Hana Financial Group announced an investment of roughly $668 to $727 million for a 6.55% stake in Dunamu, the company that operates Upbit.

A successful OKX entry via Coinone could carry implications well beyond Seoul. OKX operates across Southeast Asia, the Middle East, and Turkey. Connecting those user bases to won-denominated liquidity could create new corridors for cross-border remittance and arbitrage flows; analysts note that dollar-denominated on-ramps remain constrained in parts of South Asia and Africa, making won-denominated channels a potential alternative.

For now, the exchange's 24-hour trading volume remains materially lower than Upbit and Bithumb, consistent with its 10% market share. Real-time volume figures are trackable on CoinMarketCap and CoinRanking.

The next concrete milestone will be whether OKX or Korea Investment & Securities files any formal disclosure, and whether the FIU signals how it intends to approach the review. Given the two-year Gopax review precedent, history suggests the approval process is unlikely to resolve quickly.