Why is Hanwha Ocean stock surging today?

Hanwha Ocean shares experienced a significant surge of 9.4% on today's trading session, closing at ₩54,700, driven by two major defense-related announcements that emerged over the weekend. The most noteworthy announcement came from the company itself, which revealed the successful domestic development of its submarine Water Ram horizontal torpedo launch system in collaboration with South Korea's Agency for Defense Development (ADD).

This achievement, marking a decade-long joint research effort, was seen by market participants as a strong validation of Hanwha's independent defense technology capabilities.

Adding to the positive momentum, Hanwha Defense USA secured a $269 million contract with Tote Services on November 1 to build a medium landing ship for the US Navy. The contract was signed at the South Korean-owned Philly Shipyard, the first US Navy order since Hanwha's acquisition of the facility. Industry analysts noted that the localization of the submarine system would eliminate foreign technology licensing constraints, potentially paving the way for Hanwha to secure major international submarine programs in markets like Poland and Canada.

DS Investment Securities echoed these sentiments, highlighting naval vessel contracts and US-Korea shipbuilding cooperation as key re-rating catalysts, although they also noted a reduction in their price target. The broader sector provided a constructive backdrop, with South Korea's three largest shipbuilders reporting a 43.6% year-over-year increase in Q3 operating profit, with Hanwha Ocean leading the charge with revenue of 3.41 trillion won and operating profit growth of 67.6%.

Despite opening more than 1% lower on AI spending concerns from U.S. markets, the KOSPI quickly reversed course to trade roughly 2% higher by midday, fueled by institutional buying across construction, transportation equipment, and defense stocks. Hanwha Ocean shares traded near their intraday high and well above their 52-week low of ₩48,600. This report was AI-supported and reviewed by an editor.