Business · Markets · 1 hr ago
Tokyo shares fall 0.9% as AI and chip concerns spread
Tokyo’s Nikkei fell 0.9% at the week’s opening on Monday.
The decline followed a sell-off in US companies tied to artificial intelligence and semiconductors.
The Philadelphia Semiconductor Index had fallen for eight consecutive sessions.
Investors are worried that AI companies are investing too much and may have trouble financing that spending.
Those concerns spread quickly to Tokyo’s market.
The Nikkei stood at 64,735.74, down 588 points at the open.
The yen gained ground against the US dollar and was stable against the euro.
Tokyo shares opened lower on Monday after losses on Wall Street and a sell-off in US artificial intelligence and semiconductor stocks.
ANSA reported the Nikkei was down 0.90 percent at the open, while Mainichi reported a 2.16 percent fall in its first 15 minutes of trading.
Concerns included heavy investment in artificial intelligence businesses and difficulties financing those investments.
Mainichi also cited rising crude oil prices linked to uncertainty over Middle East tensions.
- Who
- Tokyo stock market investors and listed companies.
- What
- Tokyo shares fell at the start of the week. Reports gave different declines at the open and in the first 15 minutes.
- When
- Monday, October 19, 2026.
- Where
- Tokyo, Japan.
- Why
- Wall Street losses and concerns about investment and financing in artificial intelligence and semiconductor businesses weighed on shares; Mainichi also cited rising crude oil prices tied to Middle East uncertainty.
This story does not have two clearly opposing sides.
ANSA reported that the Nikkei fell 0.90 percent to 64,735.74.
Mainichi reported that the Nikkei fell 2.16 percent to 63,913.09.
- Nikkei at opening
- 64,735.74, down 0.90 percent, according to ANSA
- Nikkei after 15 minutes
- 63,913.09, down 2.16 percent, according to Mainichi
- Topix after 15 minutes
- 4,011.33, down 1.34 percent, according to Mainichi
- Currency
- The yen traded at 157.70 per US dollar, according to ANSA
- semiconductors
- Philadelphia Semiconductor Index recorded its eighth consecutive session in negative territory, according to ANSA