Japanese and US Stock Markets: A Week Full of Events
2026-06-16
■ Changes in central bank communication methods during Japan-US monetary policy meetings may impact stock prices.
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Attention should be paid to changes in stock supply and demand, as
these could exert downward pressure on stock indices in the short or
medium term.
This week will be a busy one for both the Japanese and US markets.
Regarding monetary policy, the market will focus on communication
between central banks and the market. From the 15th to the 16th, the
Bank of Japan will hold a monetary policy meeting, with the market
widely expecting a 0.25 percentage point increase in the policy rate to
1.00%. Due to the hospitalization of Bank of Japan Governor Kazuo Ueda,
it is reported that Deputy Governor Shinichi Uchida will attend the
post-meeting press conference. If he signals support for accelerating
the pace of interest rate hikes, it could curb the current depreciation
trend of the yen; therefore, the market will closely monitor the content
of his remarks and the resulting market reaction. In addition, from the
16th to the 17th, the US Federal Open Market Committee (FOMC) will hold
a meeting. The market expects the policy rate to remain unchanged, but
the Summary of Economic Projections (SEP) will be updated; therefore, it
is worth noting whether the FOMC members' views on inflation and the
policy rate outlook have changed. At Federal Reserve Chairman Warsh's
press conference, the market hopes to glean insights into the future
direction of monetary policy based on his assessment of recent inflation
trends. Fed chairs often experience a period of adjustment and
communication with the market at the beginning of their terms, so
caution is warranted.
Simultaneously, the impact of changes in stock supply and demand on
stock prices should be closely monitored. Last weekend, a US aerospace
company completed its initial public offering (IPO). The stock closed
above its offering price, indicating strong market demand, but it
remains to be seen whether investors will continue to sell existing
holdings to raise funds to purchase the company's stock. Furthermore,
due to the Juneteenth holiday (Remembrance Day) in the US on June 19th,
the US stock market will be closed. Therefore, the day before, June
18th, coincides with "Triple Witching," a day when stock index futures
and other derivative contracts expire. Against the backdrop of market
participants adjusting their positions, the market may experience sharp
fluctuations driven by the supply and demand of funds.
It is worth noting that, in the longer term, stock supply and demand
could also become a factor in a stock market decline. The lock-up
periods imposed on existing shareholders by the aforementioned US
aerospace company are expected to gradually expire starting this summer,
potentially putting pressure on the stock price. Furthermore, two
emerging artificial intelligence (AI) companies plan to IPO this fall.
Although their market capitalization at the time of listing is not
expected to be as large as the aerospace companies',
their target market capitalization is reportedly over $1 trillion.
Pre-IPO profit-taking and increased selling pressure after the lock-up
periods expire are both concerns. Meanwhile, several large cloud
computing service providers (such as Hyperscaler)
have announced equity financing through new share issuances to advance
AI-related capital expenditures. While such investments are expected to
drive demand growth and support stock prices in the long term, in the
short term, this could still be seen as a factor of deteriorating supply
and demand, suppressing stock prices. Other factors, such as the
increased number of issued shares due to large-scale IPOs and reduced
share buybacks by companies amidst the expansion of AI-related
investments, could weaken the improvement in earnings per share (EPS).
The market needs to be wary of whether the capital operation strategies
of US companies will exert sustained downward pressure on the overall
stock index.