US Tech Stocks Fall on 3.7% US CPI. What Should We Watch for Japanese Stocks?
[October 15 – Japanese Stock Morning Paper] US Tech Stocks Fall on 3.7% US CPI. What Should We Watch for Japanese Stocks?
Good morning🍀
This is AI Stock Notes.
There is some news to keep an eye on when considering today’s Japanese stocks.
The US Consumer Price Index (CPI) for September, released on October 14, rose 3.7% compared to the same month last year.
In the US stock market, the decline in tech stocks was particularly notable.
In this issue, I will explain the relationship between rising prices and stock prices, as well as the points to check for today’s Japanese stocks.
â– Why does rising inflation affect stock prices?
The CPI is an indicator that shows how much the prices of goods and services have changed.
If inflation continues, the possibility that the central bank will maintain high interest rates becomes a concern.
In a high-interest-rate environment, the burden of corporate borrowing may increase.
Also, for tech companies with high expectations for future profit growth, changes in interest rate outlooks can affect stock valuations.
However, just because the CPI has risen does not necessarily mean that interest rates will be raised.
â– Focus on the decline in US tech stocks
In the US stock market on October 14, the decline in the Nasdaq Composite Index was notable.
The Nasdaq includes many growth companies, such as those in the semiconductor and IT sectors.
When US tech stocks are sold off, it may also affect Japanese semiconductor-related stocks.
However, stock price reactions vary depending on the performance and order status of individual Japanese companies.
Just because US stocks fell does not mean that Japanese stocks will necessarily fall as well.
â– Three points to watch when looking at Japanese stocks
1. Semiconductor and AI-related stocks
We will check how the market moves under the influence of the US market.
② Dollar-Yen Exchange Rate
Fluctuations in exchange rates can affect the earnings outlook for export and import companies.
③ Nikkei 225 and TOPIX
Checking not only the Nikkei 225 but also the TOPIX and the number of advancing and declining stocks makes it easier to understand the movement of the market as a whole.
â– Today’s Perspective from AI Stock Notes
What is important in stock investment is not to judge buying and selling immediately after seeing the news.
“What happened?”
“Why does it affect stock prices?”
“Is there a possibility of the opposite?”
It is important to think about these three things.
â– Summary
For today’s Japanese stocks, the focus is on US price indicators and the movement of tech stocks.
However, the direction of stock prices is determined by multiple factors.
Do not judge based on a single piece of news; check corporate earnings and the movement of the entire market as well.
AI Stock Notes🍀 will continue to explain Japanese stocks in an easy-to-understand way for beginners.
*This manuscript is intended for use before the start of trading on October 15, 2026. The market figures mentioned have not been re-verified by primary sources in this response, so confirmation is required before publication. Please make your own investment decisions.