• A Ph.D. candidate in Economics at the University of Oregon
  • Interested in empirical industrial organization, platform competition, and dynamic optimization problems
  • A skilled communicator with teaching experience as the sole instructor of three undergraduate courses, and the discussion leader of more than five undergraduate courses in economics
  • A interdisciplinary collaborator with experience working in various sectors, including consulting, legal, and an intergovernmental organization
  • A web development hobbyist

Job Market Paper

Why Firms Buy: Dynamic Games of Acquisition Among Tech Giants  

Information and technology markets often feature high market concentration and frequent acquisitions. Understanding the motives underlying these acquisition strategies is therefore a first-order question for policy makers and practitioners. Using a dynamic model, I analyze acquisition records of the "big five" (or "tech giants") -- Google, Amazon, Microsoft, Meta, and Apple. I characterize the firms' acquisition decisions observed in the data as a Markov perfect equilibrium that is driven by their scale economies and competitive motive. I find that the motive to keep up with their rivals can explain a major share of their acquisition behaviors, sometimes overshadowing their internal motives of scale economies. I show that a company might opt to acquire not necessarily because it can benefit from technological synergies generated from accumulating similar targets, but to align with the trajectories of their rivals to mitigate the risk of falling behind.


Colored in red are the top 20 sectors that have been popular among the tech giants for acquisitions from 1987 to 2021. [ make plot bigger ]


Programming skills: R, Julia, Stata, PostgreSQL, SQL, Javascript, CSS, HTML, Python, Latex
Web applications developed
Technical and learning notes on few topics related to and including:

Teaching Experience

Insructor on Record:

Teaching Assistant / Grading Assistant:

Professional Experience

Research Associate, Capital Economic Consulting Group, Lee & Ko Law Firm
Intern, UNESCO
Intern, Arthur D. Little
Intern, Institutional Shareholder Service


Ph.D. in Economics, University of Oregon
M.S. in Economics, University of Oregon
M.S. in Economics, Korea University
B.A. in Business Administration, Korea University