The stock price of Samsung Electronics is displayed on a screen, Oct. 10. On this day, the stock price of the country's tech giant fell below the 60,000 won range for the first time in one year and seven months. Yonhap

The recent downturn in the semiconductor industry has led to a significant decrease in the valuation of domestic listed company stocks held by the National Pension Service (NPS).

According to financial market tracker FnGuide, Wednesday, the NPS held more than a 5 percent stake in 270 listed companies as of Oct. 10, which are subject to public disclosure. The total valuation of these stocks was estimated at 138.2 trillion won ($101 billion).

The number of publicly traded companies in which the NPS owns more than a five percent stake has dropped from 283 at the end of the second quarter to 270 as of last week. This represents a reduction of 14.3 trillion won in value.

The plummeting value of the stocks held by the NPS was largely due to the sharp decline in the stock prices of major domestic semiconductor makers, including Samsung Electronics.

The NPS's stake in Samsung remained at 7.68 percent, but the stock price fell by 27.73 percent, causing the valuation to decrease as well. During this period, the stock price of the Korean tech giant dropped from 81,500 won to 58,900 won, and the stock valuation for the NPS decreased from 37.38 trillion won to 27 trillion won.

During the same period, the stock price of SK hynix also fell by 21.06 percent, dropping from 236,500 won to 186,700 won, resulting in a decrease of 3.62 trillion won in the stock valuation for the NPS. During this time, the NPS's stake in that firm decreased from 7.9 percent to 7.35 percent.

Hyundai Motor also saw a significant decrease of 1.22 trillion won in the stock valuation, followed by Kia of 1 trillion and Hanmi Semiconductor of 510 billion won. The stakes held by the NPS decreased by 0.79 percentage points for Hyundai Motor, 0.6 percentage points for Kia and 1.12 percentage points for Hanmi Semiconductor.

On the other hand, the stock valuation that saw the largest increase for the NPS was LG Energy Solution, which rose from 4.41 trillion won to 5.77 trillion won. During this period, the stake percentage remained the same at 5.78 percent.

Following that, Samsung Biologics saw an increase of 1.27 trillion won in the stock valuation, while Korea Zinc increased by 429.2 billion won. The stake of the NPS for these stocks also remained unchanged at 6.68 percent and 7.57 percent, respectively.

Additionally, the NPS newly disclosed nine stocks with a stake of over 5 percent, including LigaChem Biosciences.

On the other hand, 22 stocks, including Hotel Shilla, were excluded from the disclosure criteria as the pension fund holds less than 5 percent.