South Korea's nuclear technology sector is making waves on the stock market, with Woori Technology leading a remarkable rally that has caught the attention of investors, analysts, and industry watchers alike. On March 10, 2026, the company's stock soared to new heights, riding a surge that put it far ahead of its peers and underscored the growing significance of nuclear and green energy technology in the region.
By 9:23 AM, Woori Technology's share price had already jumped to 19,720 KRW, up 2,420 KRW—or 13.98%—from the previous day's close, as reported by CBC News. But the momentum didn't stop there. As the morning progressed, the stock continued its upward trajectory. At 9:49 AM, it was trading at 21,000 KRW, marking a 21.39% increase, according to GGilbo. By 9:51 AM, Etoday noted the price had reached 20,850 KRW, up 20.52%. And just after 10:00 AM, TopStarNews reported an intraday high of 21,400 KRW—a staggering 23.70% gain from the previous close of 17,300 KRW.
The rally only intensified as the morning wore on. At 10:22 AM, Global Economic recorded Woori Technology trading at 21,500 KRW, up 24.28%. By 11:59 AM, EconoNews stated the stock had hit 20,625 KRW, a 19.22% leap from the day before. These figures reflect not just a single morning's excitement but a broader trend: Woori Technology had been on a four-day winning streak, including a session on March 5, 2026, when it closed at the daily upper limit.
So, what's fueling this extraordinary performance? The answer lies in a confluence of industry developments and market optimism. According to Etoday and Global Economic, the immediate catalyst was the upcoming bid for large waste disposal at nuclear power plants. Korea Hydro & Nuclear Power announced it would receive bid plans for the 'Gori Headquarters Large Waste Disposal Service' project until March 17, 2026, a move widely seen as a precursor to the country's burgeoning nuclear decommissioning market. Industry insiders estimate the global nuclear power decommissioning market is worth over 500 trillion KRW, and this bidding process is viewed as a critical first step for South Korea's participation in that lucrative sector.
The excitement wasn't limited to Woori Technology. Other nuclear-related stocks also surged: Woojin rose 11.16% to 24,900 KRW, KEPCO Technology jumped 9.28% to 161,400 KRW, Doosan Enerbility climbed 8.42% to 104,300 KRW, and Hyundai Construction advanced 8.74% to 159,200 KRW. Even KEPCO KPS and Orbitec saw gains of 2.76% and 11.50% respectively, as noted by Etoday and Global Economic. The broader KOSDAQ and KOSPI indices were also in rally mode, rising more than 3% and 5% respectively, according to CBC News.
Yet, Woori Technology stood out for its exceptional performance. The company notched a trading volume of nearly 40 million shares and a trading value approaching 780 billion KRW by mid-morning, as detailed by TopStarNews. Its price-to-earnings ratio (PER) reached 257.83, far surpassing the industry average of 39.82, and its market capitalization soared to about 3.5773 trillion KRW, ranking it 26th on the KOSDAQ market. Foreign investors held 5.44% of the company's shares, amounting to over 9 million out of a total 166.7 million shares.
Despite the frenzy, there was no special disclosure or breaking news directly from Woori Technology on March 10, 2026. Instead, the surge appears to reflect a combination of market sentiment, sector momentum, and the company's strategic positioning. As GGilbo reported, "Woori Technology is recognized as a core nuclear power control equipment technology company with significant industrial influence amid expanding Korea-US nuclear cooperation." The compatibility and performance of equipment and control technology are increasingly emphasized in major nuclear markets, particularly as the demand for Small Modular Reactors (SMRs) and next-generation nuclear technologies grows.
Founded in 1993 and listed on KOSDAQ since 2000, Woori Technology has built a reputation as a leader in control and instrumentation systems for nuclear power plants. The company operates across system businesses and offshore wind power, and has supplied monitoring and control systems to domestic nuclear facilities for more than 30 years using its own proprietary technology. This track record helped elevate South Korea to become the fourth nation globally to possess core nuclear power technology through the domestic production of nuclear power instrumentation and control equipment. Woori Technology is now actively pursuing entry into the SMR market and expanding its green energy business, according to GGilbo.
The sector's recent performance is also buoyed by a broader push for nuclear cooperation between South Korea and the United States, as highlighted by GGilbo. This international collaboration opens up new opportunities for companies with advanced control and instrumentation capabilities, especially as global interest in SMRs and green energy solutions intensifies. Analysts suggest that the expansion of SMR and next-generation nuclear technology demand presents significant technical opportunities for domestic firms like Woori Technology.
Looking at the numbers, the scale of investor enthusiasm is hard to overstate. On March 9, 2026, Woori Technology had opened at 16,610 KRW, reached a high of 18,690 KRW, and closed at 17,300 KRW with a trading volume of nearly 43 million shares. The very next day, the opening price jumped to 18,500 KRW, with an intraday low of 17,900 KRW and a high of 21,450 KRW, as per TopStarNews. The current price hovered near the day's high, reflecting robust demand and a bullish outlook among investors.
Industry insiders are watching closely to see if Woori Technology can maintain this momentum and perhaps even break through the psychologically significant 20,000 KRW mark for good. While the company’s surge has outpaced the industry average—1.14% for the sector compared to Woori Technology’s much steeper gains—the broader context of nuclear sector growth and green energy transition suggests this may be more than just a passing trend.
As the bidding process for nuclear waste disposal heats up and the global market for decommissioning expands, South Korea’s nuclear technology firms—led by Woori Technology—are poised to play a critical role in shaping the future of energy, both domestically and abroad. Investors, policymakers, and industry players alike will be watching the next moves with keen interest.