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OKX set to acquire 20% stake in South Korean crypto exchange Coinone: report

Reported by Theblock
May 15, 2026· 2 min read
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Key Takeaways
  • • OKX and Korea Investment & Securities are each negotiating to acquire approximately 20% stakes in Coinone, one of South Korea's top four crypto exchanges, according to Yonhap reporting.
  • • The dual-stake structure aligns with South Korean regulatory proposals to cap individual shareholders' ownership at 20% in domestic crypto exchanges, effectively reshaping control of major platforms.
  • • Coinone's chairman Cha Myung-hoon currently controls 53.4% of the exchange; the stake sale process represents a significant dilution of founder control amid regulatory pressure.
  • • The transaction reflects broader institutional expansion into South Korean crypto infrastructure, with major financial firms and corporations actively acquiring exchange stakes as the sector undergoes regulatory restructuring.
  • • South Korea's regulatory environment is tightening, with recent amendments requiring crypto exchanges and custodians to register with the finance minister for cross-border digital asset transfers, creating compliance-driven consolidation pressures.
Summary
OKX, a major cryptocurrency exchange, is set to acquire approximately 20% of Coinone, a leading South Korean crypto exchange, in a transaction that mirrors a parallel deal being negotiated with Korea Investment & Securities, which is similarly pursuing a 20% stake. This dual-stake arrangement directly responds to South Korean regulatory proposals designed to cap individual shareholder ownership at 20% in domestic crypto exchanges—a structural reform that is reshaping control dynamics across the sector.

Coinone's current ownership structure centers on chairman Cha Myung-hoon, who holds 53.4% of the platform. The proposed stake sales effectively force a significant dilution of founder control, with the company initiating a formal process to divest a substantial portion of the chairman's holdings. This transition reflects mounting regulatory pressure on concentrated ownership in crypto infrastructure, which regulators view as a systemic risk factor requiring institutional checks and diversification.

The transaction is emblematic of a broader competitive push by major financial institutions and corporations to secure positions in South Korea's crypto ecosystem. Korea Investment & Securities, backed by Korea Investment Holdings (assets exceeding 100 trillion won), is exploring strategic exposure to crypto exchanges as traditional brokerages expand into digital assets. This institutional inflow follows precedent-setting acquisitions by other major players—notably Mirae Asset's $92 million acquisition of Korbit—signaling a wave of consolidation among South Korea's regulated crypto venues.

South Korean regulatory frameworks are simultaneously tightening in ways that create additional compliance pressures. Recent amendments mandate that crypto exchanges and custodians register with the finance minister before facilitating cross-border digital asset transfers, a requirement that favors well-capitalized, institutionally-backed platforms capable of managing enhanced compliance infrastructure. The regulatory environment—including proposals to potentially shut down non-compliant exchanges among an estimated 200 platforms nationwide—is accelerating institutional acquisition strategies as investors seek to secure stakes in systemically important, regulatory-approved venues before further consolidation.

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Sources

1 outlet

AlphaMaven summarised this story from the reporting below. Each link opens the original article.

Theblock OKX set to acquire 20% stake in South Korean crypto exchange Coinone: report