South Korea’s benchmark stock index, the KOSPI, has surged by more than 66% this year —making it the best-performing major market worldwide. This dramatic rally is being driven by a convergence of three powerful forces: a global explosion in AI and semiconductor demand, sweeping corporate-governance reform, and renewed foreign investor interest.
At the heart of the up-move are Korea’s technology heavyweights. Firms such as Samsung Electronics and SK Hynix, which dominate both the KOSPI and the domestic chip ecosystem, are riding the AI infrastructure boom. SK Hynix’s high-bandwidth memory chips and Samsung’s booming foundry segment are benefitting from global investment in server capacity. At the same time, export-oriented manufacturers in defence, shipbuilding and battery sectors are gaining on global rearmament and energy transition tailwinds.
On the governance front, Seoul has embarked on a major effort to fix the so-called “Korea discount”, the persistent undervaluation of Korean stocks due to opaque ownership and weak shareholder rights. Legislative changes passed this year mandated more independent directors, enhanced disclosure of restructuring transactions and strengthened protections for ordinary shareholders. The effect: investor confidence has improved.
But foreign capital flows are also playing their part. As valuations moved from trading below book-value towards parity with global peers, overseas institutions returned to Korean equities in meaningful size. The combination of deep tech exposure, governance upgrades and renewed market access has created a uniquely potent investment backdrop.
Still, risks remain. A slowdown in global tech spending or a back-pedal in governance reforms could blunt momentum: the governance agenda in particular is still at an early stage of implementation. For investors and analysts alike, the key watch-points will be whether the reforms translate into stronger earnings growth, improved payouts and sustained foreign inflows —and whether the exuberance can be justified in a recovering domestic economy.
