Iran's uranium enrichment facility. /Courtesy of AP

Israel launched a preemptive strike against Iran, causing stocks related to the oil theme to surge on the domestic securities market.

Hung-gu Oil shares traded at 15,960 won on the Korea Securities Dealers Automated Quotations (KOSDAQ) at 9:43 a.m. on the 13th. The stock jumped 29.97% (3,680 won) from the previous day, hitting the upper limit price (the maximum daily price limit).

Hung-gu Oil is a company that sells gasoline at both wholesale and retail, but its stock price fluctuates greatly whenever international oil prices rise and fall, grouped under the oil theme. Other oil theme stocks such as Joongang Enervis and Kukdong Oil & Chemicals also recorded double-digit increases. Additionally, the stock prices of SK Gas and others are showing strength.

As the Iran-Israel conflict escalated again, international oil prices soared. West Texas Intermediate crude futures breached the $70 per barrel mark.

According to CNN, the Ministry of National Defense of Israel announced that it launched a preemptive strike against Iran and declared a special state of emergency. Iranian state television reported that an explosion occurred northeast of the capital Tehran.