Samsung Electro-Mechanics (009150.KS) shares rocketed to their daily price limit early in the session. The surge was fueled by a concentrated wave of buying after the company reported second-quarter earnings that blew past market forecasts, prompting major securities firms to sharply raise their target prices.

As of 9:51 a.m. on the 31st, Samsung Electro-Mechanics was trading at ₩1,142,000, up 29.9% from the previous session. SK Square (402340.KS) also hit its upper limit, climbing 29.9% to ₩1,038,000. Both stocks are part of the so-called “S7” group, which includes Samsung Electronics (005930.KS) and SK hynix (000660.KS) among the top KOSPI stocks by market capitalization. Their synchronized surge symbolically underscored a recovery in investment sentiment across the entire semiconductor sector.

The spike in Samsung Electro-Mechanics is attributed to positive catalysts on both the fundamental and supply-demand fronts. The company disclosed consolidated second-quarter revenue of ₩3.46 trillion (approximately $2.4 billion) and an operating profit of ₩440.4 billion. The operating profit marked a 106.8% jump from a year earlier, significantly exceeding the market consensus.

MetricQ2 ResultsMarket ConsensusYoY ChangeRevenue₩3.46 trillion₩3.32 trillion+24%Operating Profit₩440.4 billion₩407 billion+106.8%Net Profit₩315.7 billion₩313.2 billion+143%

(Consensus and net profit figures based on Smartkarma flash estimates)

Immediately following the earnings release, Samsung Securities raised its target price for Samsung Electro-Mechanics by 40% to ₩1.4 million from ₩1 million, while maintaining a “Buy” rating. Analyst Lee Jong-wook noted, “MLCCs (multilayer ceramic capacitors) are beginning to enter a phase of rising ASPs (average selling prices) driven by an improved product mix, while FC-BGA (flip-chip ball grid array) substrates are achieving simultaneous growth in both price and shipment volumes due to an intensifying industry shortage.” He added, “We anticipate long-term supply agreements (LTAs) for MLCCs, substrate capacity expansion, and a sustained trend of long-term earnings improvement.”

Note: According to TrendForce, as of late June, the book-to-bill ratios at the three major MLCC suppliers—Murata, Samsung Electro-Mechanics, and Taiyo Yuden—all surged to their highest levels since the COVID-19 pandemic. Driven by expanding demand for AI servers, June shipment volumes also hit a five-year monthly high. As supply tightness persists, Samsung Electro-Mechanics secured consecutive AI server MLCC supply contracts worth ₩454 billion and ₩295.1 billion in June and this month, respectively. The company also plans to raise MLCC prices across all product lines by 30% starting August 1. Japan’s Taiyo Yuden is reportedly considering a similar price hike effective September 1.

CompanyBook-to-Bill Ratio (June)June ShipmentsMurata1.30140 billion unitsSamsung Electro-Mechanics1.3198 billion unitsTaiyo Yuden1.2540 billion units

(Source: TrendForce, July 2026)

The broader recovery in sentiment for South Korean semiconductor stocks originated from the U.S. market overnight. On the 30th (local time), the U.S. Commerce Department reported that the June Personal Consumption Expenditures (PCE) price index rose 3.7% year-over-year, matching market expectations. The figure represented a 0.1% decline from the previous month, a signal interpreted as easing inflation.

Note: The core PCE price index, which the Federal Reserve watches closely and excludes volatile food and energy prices, rose just 3.3% year-over-year, showing a more pronounced slowdown than the headline index. (Source: U.S. Bureau of Economic Analysis, reported by CNBC, July 30, 2026)

On the same day, major indices on the New York Stock Exchange closed higher, buoyed by strong earnings from Microsoft and a rebound in the semiconductor sector. Chip stocks, which had recently been weighed down by profit-taking, bounced back sharply across the board. Micron surged 18.36%, SanDisk jumped 25.99%, AMD gained 13.00%, and Intel climbed 11.30%. The Philadelphia Semiconductor Index, which tracks 30 major U.S.-listed chip companies, soared more than 8% on the day. SK hynix’s American Depositary Receipts (ADRs) also skyrocketed 17.52%, reclaiming their IPO price of $149.

Note: Microsoft reported that its fiscal fourth-quarter (April-June) revenue rose 18% year-over-year to $90 billion, with revenue from its Azure cloud business surging 43%, significantly exceeding market forecasts. Its stock price jumped over 8% in after-hours trading. The Nasdaq Composite rebounded after six sessions, rising 2.8% to 25,122.18, while the S&P 500 gained 1.7% to 7,437.63. (Source: Microsoft official earnings release, reported by CNBC, July 29-30, 2026)

This favorable overseas momentum carried over into the South Korean market, helping shares of Samsung Electronics and SK hynix recover. Samsung Electro-Mechanics and SK Square subsequently shot up to their daily price limits in sympathy. In particular, Samsung Electro-Mechanics stood out, as its surge was not merely a result of sector-wide capital flows but was also underpinned by clear earnings momentum in its core MLCC and semiconductor substrate businesses, highlighting its individual investment appeal.