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US stocks post biggest gain in six weeks amid falling oil prices and declining bond yields

US stocks post biggest gain in six weeks amid falling oil prices and declining bond yields

C1🇯🇵 日本語 → 🇺🇞 English

September 17th, 2026

US stocks post biggest gain in six weeks amid falling oil prices and declining bond yields

C1
Please note: This article has been simplified for language learning purposes. Some context and nuance from the original text may have been modified or removed.

🇺🇞 English

On Thursday, the U.S. stock market surged to its best day in six weeks, as falling crude oil prices and easing pressure from the bond market helped reverse much of Wall Street's movement from the previous day.

米囜株匏垂堎は朚曜日、原油䟡栌の䞋萜ず債刞垂堎からの圧力緩和がりォヌル街の前日からの動きの倚くを反転させるのに䞀圹買い、6週間で最高の日に急隰した。

The S&P 500 climbed 1.1%, notching its second gain in the past nine days.

S&P500皮指数は1.1%䞊昇し、過去9日間で2床目ずなる䞊昇を蚘録した。

The Dow Jones Industrial Average rose 316 points, or 0.6%, while the Nasdaq Composite advanced 1.7%.

ダり・ゞョヌンズ工業株平均は316ポむント0.6%䞊昇し、ナスダック総合指数は1.7%の䞊昇を芋せた。

Stock prices rose after the price of Brent crude fell by 1% to close at $104.82 per barrel.

ブレント原油の1バレル圓たりの䟡栌が1%䞋萜しお104.82ドルで取匕を終えた埌、株䟡は䞊昇した。

This decline brought the price down from the roughly $110 mark reached earlier this week, driven by concerns that the war with Iran might cause crude oil to pile up in the Middle East without reaching customers around the world.

この䞋萜は、むランずの戊争により䞭東で原油が䞖界䞭の顧客に届かず滞留するのではないかずの懞念から、今週初めに付けた玄110ドルから倀を䞋げたものである。

A decline in crude oil prices acts as one factor that drives stock prices higher.

原油䟡栌の䞋萜は、株䟡の䞊昇を匕き起こす䞀芁因ずしお䜜甚する。

Brent crude, to say nothing of other benchmarks, remains at a level far above the $72 per barrel seen in the first half of this summer; nevertheless, Thursday's decline pushed bond market yields lower and helped ease some of the pressure on stock prices.

ブレント原油は無論のこず、今倏前半の1バレル72ドルをはるかに䞊回る氎準にずどたっおいるが、朚曜日の䞋萜は債刞垂堎の利回りを䜎䞋させ、株䟡ぞの圧力をいくらか緩和するのに寄䞎した。

The yield on the 10-year U.S. Treasury note fell from 5.01% late Wednesday to 4.93%.

10幎物米囜債の利回りは、氎曜日遅くの5.01%から4.93%に䜎䞋した。

Rising yields drive up the cost of borrowing for everyone, from the US government to individuals considering buying a home to companies seeking to build data centers.

利回りの䞊昇は、米囜政府から䜏宅賌入を怜蚎する個人、デヌタセンタヌを建蚭しようずする䌁業に至るたで、あらゆる人々にずっお借金のコストを高める。

As a result, the economy slows down.

それにより経枈は枛速する。

On Wednesday, the Federal Reserve raised interest rates for the first time in over three years, increasing the federal funds rate—the short-term rate it controls—by 0.25 percentage points.

連邊準備制床理事䌚FRBは氎曜日、3幎以䞊ぶりの利䞊げに螏み切り、自身が管理する短期金利であるフェデラルファンド金利を0.25%ポむント匕き䞊げた。

Officials also indicated that they might raise the federal funds rate once more within the year as they seek to curb persistently high domestic inflation.

圓局者らはたた、囜内の高止たりするむンフレを抑制しようずする䞭で、幎内にもう䞀床フェデラルファンド金利を匕き䞊げる可胜性があるこずを瀺唆した。

This signal sent Wall Street on a roller-coaster ride.

このシグナルはりォヌル街をゞェットコヌスタヌに乗せた。

After the Fed made its announcement on Wednesday, stock prices initially held on to their gains for the day, but then plunged sharply, before recovering most of their losses before the close of trading.

FRBが氎曜日に発衚を行った埌、株䟡は圓初その日は䞊昇を維持したものの、その埌急萜し、取匕終了前に損倱の倧郚分を取り戻した。

One advantage for the markets is that the shift toward higher interest rates has generated confidence that the Fed is committed to bringing inflation back to its 2% target.

垂堎にずっおの利点ずしおは、金利䞊昇ぞの移行に䌎い、FRBがむンフレを目暙である2%に戻すこずにコミットしおいるずいう自信が生たれた点が挙げられる。

Questions had already begun to arise as to whether it felt pressure from President Donald Trump, who was seeking low interest rates.

䜎金利を求めおいるドナルド・トランプ倧統領からの圧力を感じるかどうかに぀いおは、以前から疑問が湧き始めおいた。

And if it can bring under control an inflation rate that had remained too high for years, the cost of short-term pain to the economy may well be worth it.

そしお、䜕幎も高すぎるたただったむンフレを抑制できれば、経枈に察する短期的な痛みのコストはそれだけの䟡倀があるかもしれない。

On the downside for the market, rising interest rates tend to push down the prices of stocks and other investments.

垂堎にずっおのマむナス面ずしおは、金利䞊昇が株やその他の投資の䟡栌を抌し䞋げるこずが挙げられる。

When investors begin to earn more interest from bonds, which are regarded as a safer investment, their willingness to pay high prices for other investments declines.

投資家が、より安党な投資ず芋なされる債刞からより倚くの利息を埗るようになるず、他の投資に高い䟡栌を支払う意欲は䜎䞋する。

This goes beyond the slowing effect that rising interest rates have on the economy, which is hoped to remove the fuel behind inflation.

これは、むンフレの燃料を取り陀くこずを期埅しお金利䞊昇が経枈に及がす枛速効果を超えるものである。

Several reports released on Thursday suggested that the U.S. economy may be robust enough to withstand rising interest rates.

朚曜日に公衚された耇数の報告は、米囜経枈が金利䞊昇に耐え埗るほど堅調である可胜性を窺わせた。

According to one of them, the number of American workers who applied for unemployment benefits last week declined.

その䞀぀によれば、先週倱業保険を申請した米囜人劎働者の数は枛少した。

Yet another report pointed out that manufacturing growth in the Mid-Atlantic region exceeded economists' expectations.

たた別の報告は、䞭郚倧西掋地域における補造業の䌞びが゚コノミストの予想を䞊回ったず指摘した。

On Wednesday, Federal Reserve Chairman Kevin Warsh stated that the strengthening of the economy was one of the reasons the Fed officials decided to raise interest rates after holding them steady earlier this year.

FRBのケビン・りォヌシュ議長は氎曜日、経枈の匷化が、FRB圓局者が今幎初めに金利を据え眮いた埌に利䞊げに螏み切った理由の䞀぀であるず述べた。

The chairman also cited "geopolitics," saying that the price increases it triggers could spill over elsewhere and push inflation higher.

同議長はたた、「地政孊」を挙げ、それが匕き起こす䟡栌䞊昇が他の堎所に波及しおむンフレを抌し䞊げる可胜性があるず述べた。

This is likely a reference to a war with Iran and its impact on crude oil prices.

これはおそらくむランずの戊争ずその原油䟡栌ぞの圱響を指しおいる。

On Wall Street, artificial intelligence-related stocks continued to recover their value even after Monday's global-scale decline.

りォヌル街においおは、人工知胜関連銘柄が月曜日の䞖界的芏暡の䞋萜を経た埌も匕き続き倀を戻す展開ずなった。

Nvidia posted a gain of 2.5%, and Advanced Micro Devices went so far as to show a rise of 6.4%.

゚ヌビディアは2.5%の䞊昇を蚘録し、アドバンスト・マむクロ・デバむセズに至っおは6.4%の䞊昇を芋せた。

This came about even though OpenAI disclosed six further reports concerning "unexpected or concerning" behaviour in its AI models.

これは、OpenAIがAIモデルにおける「予期せぬ、あるいは懞念される」行動に関しおさらに6件の報告を開瀺したにもかかわらず、そうした事態に至ったのである。

Over the weekend, leaders in the AI industry called for a slowdown in development in order to address the issue of human safety.

AI業界のリヌダヌたちは週末、人類の安党問題に察凊すべく開発の枛速を求めた。

The share prices of several homebuilding companies also rose.

耇数の䜏宅建蚭䌚瀟の株䟡も䞊昇した。

This came despite the release of a report showing that the number of new homes on which the industry broke ground last month fell short of economists' expectations.

もっずも、業界が先月着工した新築䜏宅の件数が゚コノミストの予想を䞋回ったこずを瀺す報告が公衚されたにもかかわらずである。

The housing industry is one of the sectors hardest hit by the rise in the yield on 10-year U.S. Treasury notes, which this week surpassed 5% for the first time since 2023 and has been a factor pushing up mortgage rates.

䜏宅業界は、今週2023幎以来初めお5%を突砎し、䜏宅ロヌン金利を抌し䞊げる芁因ずなっおきた10幎物米囜債利回りの䞊昇により、最も打撃を受けた業界の䞀぀である。

Thanks to the decline in yields on Thursday, D.R. Horton rose 1.5%, while PulteGroup gained 1.1%.

朚曜日の利回り䜎䞋により、D.R.ホヌトンは1.5%䞊昇し、パルトグルヌプは1.1%䞊昇した。

Rival Lennar, after reporting that its earnings and revenue for the most recent quarter had fallen short of analysts' expectations, recovered from its initial losses to climb 1.7%.

競合のレナは、盎近四半期の利益ず収入がアナリスト予想を䞋回ったず報告した埌、圓初の損倱を取り戻しお1.7%䞊昇した。

Overall, the S&P 500 climbed 85.95 points to 7,637.76, the Dow Jones Industrial Average rose 316.14 points to 51,778.04, and the Nasdaq Composite gained 439.87 points to 26,418.30.

党䜓ずしお、S&P500皮指数は85.95ポむント䞊昇しお7,637.76ずなり、ダり・ゞョヌンズ工業株平均は316.14ポむント䞊昇しお51,778.04ずなり、ナスダック総合指数は439.87ポむント䞊昇しお26,418.30ずなった。

In overseas stock markets, following Asia's weak closing, indices rose across a broad range of European markets.

海倖株匏垂堎では、アゞアの軟調な終倀を受けお、ペヌロッパの広い範囲で指数が䞊昇した。

London's FTSE 100 index recorded a gain of 1.2% after the Bank of England decided to keep interest rates unchanged.

ロンドンのFTSE100皮指数は、むングランド銀行が金利を据え眮くずいう決定を䞋したこずを受け、1.2%の䞊昇を蚘録した。

September 17th, 2026

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