Woongjin is the operating holding company of the Woongjin Group, earning dividend income, brand royalty fees, and management advisory revenue from its holding business while also directly running an IT services business.
The IT services unit spans four areas—solutions, ERP, cloud, and digital call centers—handling digital transformation projects for domestic and overseas clients based on SAP ERP and industry-specific software.
Key subsidiaries include Woongjin Thinkbig and Woongjin Compass in publishing and education services, Woongjin Booksen in logistics and distribution, Rexfield Country Club and Woongjin Playcity in leisure and sports, and, since 2025, funeral services provider Woongjin Priedlife.
Woongjin Thinkbig's flagship offerings are the subscription reading program Woongjin Bookclub, spanning early childhood to adult learners, and the AI-based learning platform SmartAll, competing against rivals such as Kyowon Kumon, Chunjae Textbook, Visang Education, Mirae N, and YBM.
Woongjin generated KRW 76.5 billion in revenue from related-party transactions in 2025, of which KRW 66.0 billion came from Woongjin Thinkbig, indicating a sizable share of intra-group transactions.
In June 2025, Woongjin acquired a 99.77% stake in Freedlife, the domestic funeral services market leader, from private equity firm VIG Partners for KRW 887.9 billion, renaming it Woongjin Priedlife and outlining a "total life care" business concept linking education, leisure, healthcare, elder care, and funeral services.
This acquisition pushed the group's total assets above KRW 5 trillion, leading to its redesignation as a publicly disclosed conglomerate in 2026 for the first time in twelve years.
Its Turkish rental subsidiary Woongjin Eversky, which had fallen into complete capital impairment, was declared bankrupt by the Seoul Bankruptcy Court in June 2026, marking the wind-down of part of its overseas operations.