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Startup NewsMarch 21, 2026

Primer's 27th Demo Day Highlights Startups Reshaping Market Structures

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On March 11, Primer, Korea's first-generation startup accelerator, hosted its 27th Demo Day, showcasing the visions and strategies of early-stage startups. The event featured nine diverse teams in fields such as AI, biotech, creator commerce, lifestyle, and food, all united by a common goal: redefining familiar market challenges.

Primer's CEO, Do-Gyun Kwon, emphasized the critical nature of the early startup phase, comparing it to the formative period of a child in the womb. He highlighted Primer's commitment over 16 years to nurturing startups through bi-annual batch programs, stressing the importance of initial direction in determining a company's future survival and growth.

Among the standout presentations was Pybery AI's 'Stockberry,' an AI-driven personal investment manager addressing the 'management gap' for individual investors. By offering personalized portfolio reports and decision-support conversations, Stockberry aims to provide a tailored investment experience based on user data.

Wesley targeted the inefficiencies in U.S. accounting firms, automating repetitive bookkeeping tasks with AI agents to allow accountants to focus on higher-value work. This approach reduces processing time significantly, transforming traditional workflows into more efficient, parallel processes.

Across's 'GPTO' sought to redefine brand visibility in the age of AI, focusing on 'AI Answer Optimization' (AEO) rather than traditional SEO. By analyzing AI model responses, Across aims to ensure brands are recognized as the 'correct answer' in AI-generated content.

In the creator economy, Team Mavericks' 'Rapid' offered a streamlined sales infrastructure for knowledge creators, bridging the gap between platform ease and independent store profitability. Alton's 'Videe' automated short-form ad creation, enhancing the efficiency of content experimentation. Meanwhile, DooDoo positioned itself as a co-operation partner for creators, facilitating brand establishment through comprehensive support in manufacturing, distribution, and marketing.

Cantalope and Molly F&B focused on daily inconveniences, transforming them into business opportunities. Cantalope reimagined home UX with aesthetically pleasing, functional products, while Molly F&B aimed to integrate Korean sauces like gochujang into global culinary practices through a 'usability-based K-sauce' strategy.

Lastly, Kaimmun stood out with its bio deep-tech innovations, addressing the limitations of T-cell engaging bispecific antibodies in cancer treatment. By minimizing cytokine release while maintaining efficacy, Kaimmun aims to broaden the therapeutic applications of immune oncology.

Each presentation underscored the startups' dedication to not just offering ideas but actively reshaping market structures, demonstrating that innovation lies in how we redefine and address existing challenges.