US Stocks Close Higher Led by SOX, Night Session Builds Momentum
All four major US indexes closed higher on the 27th. The Nasdaq rose 308.43 points, or 1.18%, to close at 26,477.81 points; the S&P 500 rose 45.83 points, or 0.60%, to close at 7,722.60 points, closing higher for a second straight trading day; the Dow Jones Industrial Average, dragged down by Boeing's sharp drop, edged up only 15.99 points to close at 52,377.57 points. The Philadelphia Semiconductor Index surged 399.04 points, or 3.60%, to close at 11,482.51 points. Taiwan's加權指數 closed the previous trading day at 46,096.23 points, up 54.8 points, or 0.12%, with turnover of 9,765.5億元. Taiex futures night session jumped 774 points, 台積電 futures rose 42元, and today's open is expected to extend the rebound.
Institutions Mixed as Margin Balances Drop Sharply, Chip Pressure Eases
The three major institutional investors net bought a combined 31.7億元, with investment trusts投信大買236億元, foreign investors net selling 80.4億元, and dealers net selling 124億元. Margin balances fell 104.93億元, indicating some short-term funds exited, which may ease near-term chip pressure. However, foreign investors remain net sellers, so it remains to be seen whether electronic heavyweights can lead a rebound, and以及成交量 whether trading volume follows to lift the broader market higher. Investors should not chase hastily just on a sharp index gain.
AI Theme Warms Up as Semiconductors Strengthen Broadly
Claude developer Anthropic filed for listing, reigniting market enthusiasm for AI investment. Broadcom rose 4% after D.A. Davidson upgraded its rating from neutral to buy and raised its target price from 350 dollars to 400 dollars. AMD jumped 5.45%, Nvidia rose 0.90% to 217.94 dollars per share, Applied Materials rose 2.15%, and Qualcomm rose 2.54%. Nvidia announced a 3 billion dollar investment in Meta's recently announced stock offering plan, while Meta will also expand deployment of Nvidia hardware to support AI agent services. Memory stocks rose in tandem, with Micron up 2.77%, Western Digital up 6.95%, SanDisk up 3.92%, Seagate up 3.67%, and SK海力士ADR up 1.92%. 台積電, AI servers and related supply chains may become funding focuses.
Earnings and Rate Decision to Drive Outlook
Tech giants were mixed, with Apple up 0.93%, Alphabet up 1.19%, and Amazon up 1.61%, while Meta fell 1.64% and Microsoft fell 0.22%. Boeing plunged nearly 11% on slower-than-expected 737 MAX production ramp-up and a weaker long-term cash flow outlook. Alphabet and Microsoft will report earnings on Wednesday, followed by Amazon on Thursday, with markets focused on AI capital expenditure scale and earnings performance. The U.S. Federal Reserve will announce its rate decision this week, with markets widely expecting it to stand pat. International oil prices fell on possible easing tensions in the Persian Gulf, helping ease inflation pressure. For strategy, watch whether 台積電 cash shares follow suit, build positions in batches, avoid chasing highs, and stay alert to volatility after a rebound.