SK Telecom splits AI data centers into KKR-backed SK Horizon

SK Telecom has separated its AI data center infrastructure business from the SK Broadband subsidiary and sold minority stakes to KKR and the IMM Investment-Stonebridge consortium for KRW 3.08 trillion ($2.2 billion). The new company, SK Horizon, launches with eight operating South Korean data centers and a stated goal of growing to 318MW of capacity.

The split is simple: SK Broadband gets divided into SK Horizon and a surviving SK Broadband that keeps the fixed-line, media and enterprise businesses. SK Telecom holds 51 percent of the new vehicle, KKR takes 29 percent and the IMM consortium 20 percent, leaving the parent in control while two infrastructure investors take direct equity exposure to the operating assets.

SK Horizon enters the AI data center sector anchored by eight existing facilities spread across Seocho, Bundang, Gasan, Centum, Yangju and Pangyo, with two more in Ilsan. It has additional data centers under construction and plans phased expansion of its submarine cable infrastructure. No number in the announcement defines current capacity; the expansion target will require both construction execution and demand to fill whatever gets built.

The corporate reshuffling moved quickly: a month before the split announcement, SK Telecom launched SK Hyper, a dedicated AI data center unit seeded with $508 million. The two vehicles now have distinct roles—SK Telecom oversees the group's overall AI data center business, SK Horizon handles infrastructure expansion, and SK Hyper focuses on gigawatt-scale projects. That creates a ladder of risk: operating capacity inside SK Horizon, speculative development inside SK Hyper, overall strategy at the parent.

Kim Seong-soo will act as CEO of both SK Horizon and the surviving SK Broadband, though the announcement said the appointment was yet to be finalized. He called the restructuring "a proactive measure aimed at strengthening expertise and enabling faster execution in the AIDC business." The financial rationale is blunter: SK Telecom said the streamlined structure will let the group secure funding for key business areas more effectively, which points to a ring-fenced SK Horizon raising money against its own operating base rather than pulling the broadband group's cash flows into each new project.

SK Telecom could have sold a controlling stake in SK Broadband or raised debt across the whole group; instead it created a separately capitalized subsidiary and placed minority stakes with two infrastructure investors. The $2.2 billion equity check gives KKR and IMM a line into an operating platform, not a development-only bet. The gigawatt-scale ambition remains inside SK Hyper, still housed within SK Telecom's AI data center structure, and that separation is the deal's real message.

The pricing logic follows the capital hierarchy: built, operating capacity earns a different multiple than speculative development. SK Horizon's facilities can be underwritten today, SK Hyper's gigawatt projects must prove contracted demand, and KKR and IMM have paid for the first part rather than the second.

The announcement does not say whether any of the eight facilities carries a hyperscaler offtake or is anchored by long-term contracted customers, and that absence matters more than the ownership percentages. If existing capacity is contracted to AI or other long-term tenants, the 29 percent and 20 percent stakes are straightforward infrastructure exposure. If it is merchant capacity, SK Horizon faces the financing gap for assets without anchors, and the investment will have to be justified by future leasing rather than current cash flow.

For SK Telecom, the split solves a capital problem: AI data center buildouts require enormous spending, and one balance sheet can only carry so much construction risk. By bringing in external capital for 49 percent of SK Horizon, SK Telecom strengthens the operating asset base while keeping 51 percent control, and the new partners absorb a share of the execution risk as the company pushes toward that target.

The test will come in the build-out. These operating sites are a platform; reaching the target requires both construction and customers. If the operating book attracts the contracted demand needed to scale, KKR and IMM will look shrewd. If growth stalls, their stakes will carry operating risk that SK Telecom has shared rather than shed, and the parent's majority still ties its own balance sheet to the outcome. The deal does not resolve the AI data center financing question; it gives that question a cleaner address.