Theme stocks in South Korea surged 64-100% during July 6-10, defying a broader market decline. Hanseong Enterprise doubled from 4,230 KRW on July 3 to 8,460 KRW on July 10 following online support amid delisting risks, while Kumho Electric and Kumho Construction rose 79.62% and 77.05% respectively on semiconductor cluster speculation in the Honam region. The rallies were driven by regional speculation and social media narratives rather than earnings or contract announcements. The gains occurred as the KOSPI fell 7.57% and the KOSDAQ dropped 3.57% during the same period, with analysts cautioning that similar theme-driven rallies in optical communication stocks earlier this year reversed 70-80% from peaks within months.
Hanseong Enterprise Surges 100% on SNS Support Campaign
Hanseong Enterprise, a seafood processing company known for its "Craemi" brand, recorded the highest weekly return at 100.00% during July 6-10, according to Korea Exchange data. The stock price rose from 4,230 KRW on July 3 to 8,460 KRW on July 10.
The rally occurred as the company faced delisting risks due to failing to meet strengthened market capitalization requirements. Online communities rallied support, circulating stories that the company had hosted concerts for war veterans. No brokerage reports or corporate disclosures supported the price movement. The surge was interpreted as "support investment" driven by social media narratives rather than financial fundamentals.
Honam Region Stocks Rise on Semiconductor Cluster Speculation
Stocks linked to the Honam region semiconductor cluster — one of the government's three mega projects — posted sharp gains. Kumho Electric rose 79.62% from 741 KRW to 1,331 KRW, ranking second in weekly returns. Kumho Construction climbed 77.05% from 9,500 KRW to 16,820 KRW, placing third. Kumho Construction hit an intraday high of 19,380 KRW on July 10, marking a 52-week high.
Korea Exchange designated Kumho Construction and its preferred shares as investment caution and warning stocks, and announced plans to classify them as investment risk stocks. Trading in Kumho Construction preferred shares was halted for one day on July 2 after the stock continued rising following the warning designation. The exchange's market alert system flags stocks with rapid price increases or concentrated trading by a small number of accounts.
Seosu, a Gwangju-based concrete company, rose 72.49%, ranking fourth in weekly returns. Gwangju Shinsegae gained 28.02%. The government's decision to locate the Honam semiconductor cluster at the Gwangju military airport site, followed by President Lee Jae-myung's call for accelerated project timelines, fueled buying interest in related stocks.
Kumho Tire Gains 64.56% on Land Revaluation Expectations
Kumho Tire surged 64.56% from 4,740 KRW to 7,800 KRW during the week, ranking sixth in returns. The stock was highlighted as a beneficiary of the semiconductor cluster and regional development due to its Gwangju factory site's proximity to Gwangju Airport and Gwangju Songjeong Station.
Individual investors net purchased 34.85 billion KRW of Kumho Tire shares, ranking eighth among all stocks by net buying volume. Foreigners net sold 14.59 billion KRW and institutions net sold 15.96 billion KRW of the stock during the same period. The relatively small market capitalization of these stocks allowed rapid price movements with limited capital inflows.
Yoo Ji-woong, a researcher at Daol Investment & Securities, stated in a phone interview that if the Gwangju factory site sale materializes, the financial structure improvement effect would be significant. He noted that selling the site could substantially reduce the company's net debt of approximately 1.3 trillion KRW, lowering borrowing costs and interest expenses while creating capacity for production expansion, dividends, and share buybacks.
However, Yoo cautioned that actual sale completion would require considerable time. He stated that even if the company announces a sale policy this year, completion within two to three months would be difficult. He added that the scale of semiconductor cluster investment and whether it actually links to Kumho Tire's site pricing must be confirmed. He noted that since the Gwangju factory currently operates equipment, relocation space at the Hampyeong new business complex must be prepared first. With relocation scheduled for after 2028, site sale would likely occur thereafter.
Lim Eun-young, a researcher at Samsung Securities, highlighted the potential for revaluation of the Gwangju factory site in a report dated June 30. Lim stated that the Gwangju factory site is a large-scale property near Gwangju Airport and Gwangju Songjeong Station, with sale discussions intensifying after a fire last year. Lim noted that recent mentions of the Gwangju Airport site as a leading candidate for Honam semiconductor investment plans expanded interest in the nearby Gwangju factory site value. However, Lim stated that the company sees no need to rush the sale, and that as investment details become concrete, site value appreciation and accelerated sale possibilities may emerge.
Analysts Warn Theme Stock Gains Lack Concrete Fundamentals
Some Honam theme stocks saw early enthusiasm fade. Namhwa Industrial and Namhwa Construction fell 7.71% and 6.21% respectively during the week. Bohae Brewery, a Honam region liquor company, declined 1.69%.
An anonymous brokerage researcher stated that while expectations for Kumho Construction's public housing orders have some basis given the government's policy focus on public housing supply, predicting large-scale orders for semiconductor cluster-related construction such as plants, data centers, and power grids is overly qualitative speculation. The researcher noted that specific project scales and construction types to be tendered remain undiscussed. If private entities issue orders for general buildings or factory facilities, they would likely select major construction firms, making direct benefits to Kumho Construction uncertain.
The researcher stated that concrete evidence such as Gwangju city convening related companies with Kumho Group in attendance would be needed to support benefit expectations, and that current semiconductor cluster-related gains are excessive.
The recent market movement resembles the March surge in optical communication stocks during heightened war concerns. After Nvidia CEO Jensen Huang mentioned optical semiconductors as core future technology at the annual GTC 2026 developer conference, optical communication equipment and fiber optic stocks surged as AI infrastructure beneficiaries. However, those stocks subsequently reversed most gains.
Inno Instrument surged in early April, hitting a high of 5,080 KRW on April 16 before closing down 29.95% that day on profit-taking. The stock continued declining, closing at 939 KRW on July 10 — down 82% from its peak. Kwangjeonja, Giga Lane, and Light & Electronic, which once dominated top individual stock returns, are currently down 70-80% from their highs.
A financial investment industry expert stated that while theme stock phenomena occur overseas in forms such as meme stocks, they are particularly frequent in the Korean market. The expert noted that since price increases are not based on fundamentals, sustained rallies are rare, with prices typically returning to previous levels within three to four months. The expert emphasized that given the lack of concrete plans for semiconductor investment, uncertainties remain high as investment plans could be reversed or substantially scaled back. The expert advised approaching with careful judgment of actual business and earnings impact rather than a gambling mentality.
FAQ
Why did Hanseong Enterprise's stock price double during July 3-10?
Hanseong Enterprise's stock rose 100% from 4,230 KRW to 8,460 KRW as online communities organized support buying amid the company's delisting risk due to market capitalization shortfalls. Social media circulated stories of the company hosting concerts for war veterans, driving "support investment" despite no brokerage reports or corporate disclosures supporting the price movement.
When will Kumho Tire's Gwangju factory site sale occur?
Analysts state that even if Kumho Tire announces a sale policy this year, completion within two to three months would be difficult. The company currently operates equipment at the Gwangju factory and must first prepare relocation space at the Hampyeong new business complex. With relocation scheduled for after 2028, site sale would likely occur thereafter, according to Daol Investment & Securities researcher Yoo Ji-woong.
