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```htmlGolden Ten Data reported on June 30 that Timothy Moe and John Kwon from Goldman Sachs pointed out that for every 1 percentage point increase in the combined weight of Samsung and SK Hynix in the Korean stock index, foreign investors may withdraw about $2 billion from the Korean market. This is due to the requirement set by the U.S. Investment Company Act, which mandates that investment portfolios must meet diversification thresholds. Goldman Sachs also stated that the massive inflow of funds into leveraged ETFs, along with the increase in options trading and margin retail transactions, has created a structural environment in which daily price volatility far exceeds the range that company fundamentals can support. Since last year, the growth of asset management scale in Korea mainly stems from investment returns rather than new funds. As valuations rise, institutional investors' mechanical exposure to market volatility is also increasing—often related to hedging strategies. This means that even a mild market pullback could trigger a cascade of forced selling.```

BlockBeats News, June 30th, on Monday, US stock sensor and power semiconductor solution provider Allegro MicroSystems (ALGM) rose by 14.7%, closing at $66.37 and reaching a historical high of $67.41 during the day. Mizuho Securities analyst Vijay Rakesh maintained the stock's "Outperform" rating and raised the target price from $54 to $67. The reason is that the company is benefiting from the surge in AI server demand for current sensors, fan drivers, and power semiconductors. TD Cowen also identified Allegro as one of the "top picks" in mid-cap stocks, with a target price of $70. The firm believes that the electrification of vehicles, autonomous driving, and AI data centers are all long-term growth drivers for the company, with the data center business currently accounting for approximately 14% of Allegro's revenue. Such rating adjustments indicate that Wall Street is looking for AI beneficiaries beyond NVIDIA and Micron. AI data centers not only require GPUs and high-bandwidth storage but also demand power supply, cooling, sensing, connectivity, and control systems. As capital expenditures shift from cloud providers' budgets to actual construction orders, more small and medium-sized hardware companies are being included in the AI trading landscape. Analysts also noted that second-tier AI concept stocks typically have lower liquidity and greater valuation elasticity, making their stock prices more sensitive to brokerage ratings and target price adjustments. Allegro's rise reflects the market's optimism about the diffusion of the AI hardware supply chain and demonstrates investors' willingness to pay a higher premium for companies benefiting indirectly from AI.

BlockBeats news, on June 30, the global artificial intelligence boom has driven the share prices of Samsung Electronics and SK Hynix to historic highs this year, but this rally has also exposed the structural vulnerabilities of the Korean stock market, which is unaccustomed to sharp volatility. SK Hynix and Samsung now account for a record 60% combined weight in Korea's KOSPI Index, compared to about 40% two years ago. Baosheng Head of Equity Research Mathieu Lachet stated that the recent market trends are an important reminder of the risks of concentration. When investors' positions become crowded, periods of high volatility should be expected.