Nexon

Following Kim Jung-ju's death in 2022, his wife Yoo Jung-hyun became board chairperson of NXC Corporation. The investment function draws on Kim's existing relationships—particularly his partnership at New York-based Collaborative Fund—and NXC's internal treasury team. Kim had personally sourced venture deals through the Collaborative Fund network, and that pipeline likely persists under the current structure.

NXC blends three elements not commonly combined: direct venture exposure through a named external VC partnership (Collaborative Fund), a crypto treasury held atop Nexon's public-company balance sheet, and Korean real estate holdings that include commercial buildings and a philanthropic children's hospital. The corporate holding structure gives it balance-sheet scale without the disclosure burden of a dedicated family office.

In April 2021, Nexon Co. disclosed a purchase of 1,717 Bitcoin for roughly $100 million at an average price near $58,000, citing the asset's 'long-term reliability and liquidity.' The position sits on Nexon's corporate balance sheet, not a separate NXC entity. As of late 2024, no public filings indicate a sale.

NXC does not take outside capital. The vehicle was established solely to hold Kim Jung-ju's controlling stake in Nexon and his personal investments. It functions as a de facto single-family holding company, though it uses some corporate treasury structures for operational efficiency.

C-Program is a venture philanthropy collective that Kim Jung-ju co-founded with other Korean technology entrepreneurs. While legally separate from NXC, the network provides NXC with early-stage deal flow across sectors including greentech and health. Co-investors in C-Program have included founders and senior executives from major Korean internet companies.

Kim Jung-ju founded Nexon in 1994, building it into one of the world's first and largest free-to-play online game publishers with franchises including MapleStory, KartRider, and Dungeon & Fighter. Nexon's 2011 Tokyo IPO raised roughly ¥100 billion. Kim held his stake through NXC Corporation, and upon his death in 2022, the fortune transferred to his family, including wife Yoo Jung-hyun and their children.

The Nexon Foundation supports youth programming and technology education in Korea. Separately, NXC co-developed the Purme Foundation Nexon Children's Rehabilitation Hospital, a public-benefit facility in Seoul focused on pediatric rehabilitation. Kim also operated the Nexon Computer Museum on Jeju Island, preserving personal-computing history.