Major Shakeup in KOSPI Market as 17 of Top 20 Stocks Change

By Yang Boyeon Posted : May 11, 2026, 17:02 Updated : May 11, 2026, 17:02
[Data=Korea Exchange]


There has been a significant shift in the rankings of the top stocks by market capitalization on the KOSPI. Despite geopolitical risks stemming from the Middle East, leading semiconductor companies have maintained their positions based on solid fundamentals, while stocks in the robotics and shipbuilding sectors have surged. In contrast, power equipment stocks, which saw a sharp rise last month, have faced profit-taking, causing them to drop in the rankings.

According to the Korea Exchange on May 11, 17 of the top 20 stocks by market capitalization on the KOSPI have changed positions compared to a month ago (April 10). This means that the lineup of the 'Top 20' has been completely reshuffled, excluding Samsung Electronics, SK Hynix, and Samsung Life, which hold the 1st, 2nd, and 13th positions, respectively.

The primary drivers of this upheaval are strong semiconductor exports and the rapid rise of the robotics, power equipment, and shipbuilding sectors. Preliminary semiconductor export figures for May have reached record highs, signaling a recovery in the industry, which has led to a broad rally in semiconductor-related stocks.

The most notable gain in the KOSPI market was seen by Samsung C&T, which climbed five spots from 12th to 7th, driven by expectations of enhanced shareholder return policies and corporate governance reforms. SK Square, benefiting from a reevaluation of its stake in SK Hynix, rose three spots from 6th to 3rd, securing a place in the top three. Doosan Enerbility moved up two spots from 8th to 6th, capitalizing on momentum from nuclear power, while HD Hyundai Heavy Industries also climbed three spots from 11th to 8th.

The shipbuilding sector, in particular, received a boost from the signing of a memorandum of understanding (MOU) related to the MASGA project by Minister of Trade, Industry and Energy Kim Jeong-kwan and U.S. Secretary of Commerce Gina Raimondo. The automotive sector also saw Kia rise one spot from 10th to 9th, driven by ongoing expectations surrounding physical artificial intelligence (AI).

Several stocks outside the top 20 made notable gains. LS ELECTRIC surged 16 spots from 35th to 19th, entering the 'Top 20'. Conversely, Hanwha Aerospace, a leader in the defense sector, fell five spots from 5th to 10th after a significant drop. KB Financial also dropped five spots from 9th to 14th, while Samsung Biologics (7th to 11th) and Shinhan Financial Group (14th to 18th) each fell four spots.

The KOSDAQ market also experienced significant changes, with 16 of the top 20 stocks changing positions. The standout performer was JUSUNG Engineering, which soared 23 spots from 31st to 8th, riding the momentum from the semiconductor equipment sector.

Lee Kyung-min, a researcher at Daishin Securities, stated, "As long as the upward trend in forward earnings per share (EPS) continues, there is ample room for KOSPI to rise. A rotation strategy focusing on undervalued stocks in sectors such as healthcare, hotels and leisure, and software will be effective as the semiconductor surge stabilizes."



* This article has been translated by AI.

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