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Samsung Electronics and SK hynix are both experiencing rising stock prices in early trading on the 21st. This appears to be influenced by U.S. Micron Technology, which presented guidance that exceeded market expectations. Micron is the first major memory semiconductor company to announce its results, earning the nickname 'barometer of semiconductors.'

On this day, at 9:03 a.m., Samsung Electronics shares traded at 60,800 won on the KOSPI market. The stock price rose by 1% (600 won) compared to the previous day. It has recovered the 60,000 won mark for the first time in over five months and continues its upward trend. SK hynix shares also traded at 213,500 won, up 1.67% (3,500 won) from the previous day at the same time.

Micron announced its results for the second quarter of fiscal year 2025 (December 2024 to February 2025) after the close of the U.S. stock market overnight. The earnings per share (EPS) was $1.56, surpassing market expectations of $1.44.

Micron provided its revenue guidance for the third quarter of fiscal year 2025 (March to May) at between $8.6 billion and $9 billion. The midpoint of $8.8 billion exceeded Wall Street's expectations of $8.47 billion. The median EPS for the third quarter of fiscal year 2025 was also higher at $1.57, compared to market expectations of $1.52.

Sanjay Mehrotra, CEO of Micron, noted, "We expect to record the highest quarterly revenue in history during the third quarter of fiscal year 2025, driven by increased demand for DRAM and NAND flash, particularly from data centers," adding that "high bandwidth memory (HBM) is sold out through the fiscal year 2025 batch (until August)."