NEW YORK — Wall Street finished lower Wednesday, but beneath the weak headline indexes was a dramatic split between some of the market’s biggest winners and losers, with Meta Platforms surging on artificial intelligence optimism, Signet Jewelers soaring after raising its profit outlook and Casey’s General Stores suffering its worst selloff in years despite reporting stronger earnings.
The S&P 500 fell about 0.5%, the Dow Jones Industrial Average lost roughly 0.8%, and the Nasdaq Composite dropped 0.6% on September 9 as renewed Middle East tensions pushed Brent crude back above $100 a barrel, reigniting fears that expensive energy could keep inflation elevated and complicate the Federal Reserve’s next interest-rate decision.
Yet the broad-market decline concealed extraordinary moves in individual stocks.
Meta Platforms jumped 6.6%, Signet Jewelers surged about 24% and Centerspace gained nearly 9%. On the other side, Casey’s General Stores plunged roughly 16%, while ServiceTitan sank about 30%.
And in several cases, the direction of the stock was more revealing than the headline financial results.
Meta surges 6.6% as Wall Street bets on its new AI agent
Meta Platforms was one of Wednesday’s standout large-cap winners, climbing 6.6% to close at $653.69 after investors reacted enthusiastically to the company’s launch of Muse, a personal artificial-intelligence agent designed to do much more than answer questions.
Meta says Muse can perform tasks on a user’s behalf, including sending emails, organizing schedules, booking travel and interacting with other applications. It operates through what Meta calls a dedicated Muse Secure VM, with users controlling the level of access the agent receives.
The product represents a significant extension of CEO Mark Zuckerberg’s push toward what he has described as “personal superintelligence.”
Reuters reported that Muse is initially available in the United States through its own application and WhatsApp, with Meta attempting to turn its enormous consumer reach into an advantage in the increasingly competitive AI-agent market.
The enthusiasm was strong enough to lift Meta even as most major technology stocks struggled under the weight of rising oil prices and Treasury yields.
That divergence may be the biggest message from Wednesday’s session: investors remain willing to pay aggressively for companies they believe can turn AI into new products and revenue streams—even during a broader risk-off market.
Apple unveils its first foldable iPhone—but shares barely move
Apple generated perhaps the day’s biggest technology-product headline, but not one of its biggest stock moves.
The company introduced the iPhone Duo, its first foldable iPhone, with a starting price of $1,999. The device features a 7.6-inch inner display and represents one of the most significant physical changes to the iPhone since the product category was launched.
But investors gave the announcement a restrained reception.
Apple shares finished about 0.3% lower, despite the attention surrounding the foldable device and the fact that the event was the first major product launch led by new CEO John Ternus.
That relatively muted reaction highlights a recurring challenge for Apple.
A spectacular new device can attract headlines, but investors ultimately want evidence that expensive new hardware can meaningfully increase unit sales, margins or ecosystem revenue.
Foldable smartphones also remain a relatively small portion of the global handset market, meaning Apple’s $1,999 Duo may initially function more as a premium technology showcase than a mass-market replacement for the conventional iPhone.
Signet explodes higher after raising profit outlook
The day’s most spectacular consumer-stock winner was not a technology company.
Signet Jewelers surged about 24%, marking its biggest one-day advance since 2020, after the owner of Kay Jewelers, Zales and Jared reported stronger-than-expected quarterly results and raised its full-year earnings forecast.
Signet reported adjusted earnings of $2.19 per share for its fiscal second quarter, while same-store sales increased 2.2%. The company subsequently lifted its fiscal 2027 adjusted earnings guidance to $10.45 to $12.15 per share, compared with its previous forecast of $9.20 to $11.
Signet also announced a $125 million accelerated share repurchase, giving investors another reason to push the stock sharply higher.
The rally is particularly notable because luxury and discretionary consumer stocks have faced questions about whether households will continue spending aggressively as inflation and borrowing costs remain elevated.
Signet’s results suggest at least some jewelry customers are still willing to spend.
Centerspace jumps after $8.1 billion REIT combination
Centerspace, trading under the ticker CSR, gained about 9% after announcing an all-stock combination with Independence Realty Trust.
The transaction would create a multifamily real-estate investment trust with approximately $8.1 billion in enterprise value, a roughly $5 billion pro forma equity market capitalization and more than 44,000 apartment units.
Under the agreement, Centerspace investors would receive 3.8 Independence Realty shares for every Centerspace share they own. Existing Independence Realty investors are expected to control about 78% of the combined company, with Centerspace investors holding approximately 22%.
While Centerspace rallied, Independence Realty fell more than 4%, a familiar merger-market pattern in which shares of the acquisition target rise while investors scrutinize the cost and dilution facing the buyer.
Casey’s beats earnings—and gets punished anyway
Perhaps Wednesday’s most interesting market lesson came from Casey’s General Stores.
The convenience-store operator reported quarterly profit and revenue that exceeded Wall Street forecasts.
Yet its shares collapsed around 16%.
Casey’s earned $7.37 per diluted share, up 27.7% year over year, while net income climbed 27.1% to $273.7 million. Revenue reached approximately $5.68 billion.
Those numbers would ordinarily look impressive.
But investors focused on a different metric: inside same-store sales increased only 3.2%, weaker than Wall Street had expected. Fuel gallons sold at comparable locations also declined 0.3% year over year.
Casey’s also reaffirmed rather than increased its full-year outlook.
The result was a brutal reminder that stock prices do not move simply because a company “beats earnings.”
They move according to how the results compare with what investors had already priced in.
Casey’s shares had entered the quarter carrying high expectations and an expensive valuation. When the underlying same-store performance failed to clear that bar, investors reacted far more severely than the headline earnings numbers might suggest. Barron’s described the decline as the company’s steepest in nearly two decades.
ServiceTitan drops 30% despite another earnings beat
The same phenomenon hit software company ServiceTitan even harder.
Its shares plunged approximately 30%, even though fiscal second-quarter revenue climbed 21% year over year to $292.8 million and adjusted earnings exceeded Wall Street expectations.
The problem was guidance.
ServiceTitan forecast third-quarter revenue of $285 million to $287 million, below the approximately $288 million analysts were expecting.
For a rapidly growing software company carrying substantial expectations around artificial intelligence, even a relatively small guidance disappointment can cause dramatic valuation compression.
The 30% collapse illustrates how unforgiving the market has become when growth stocks fail to deliver the acceleration investors expect.
Braze suffers from the same AI-expectations problem
Marketing-software provider Braze also sold off despite reporting strong underlying numbers.
The company generated $227.2 million in fiscal second-quarter revenue, up 26.2% from a year earlier, while producing record second-quarter free cash flow of $22 million.
Yet the shares dropped sharply as investors questioned whether AI adoption was translating into sufficiently powerful future revenue growth.
Barron’s reported that Wall Street focused partly on softer-than-hoped remaining performance obligations—a measure of contracted future revenue—and a lack of evidence that AI products were materially accelerating the company’s top line.
That makes Braze and ServiceTitan useful counterpoints to Meta.
All three companies are emphasizing AI.
But only Meta received an enthusiastic market reaction Wednesday.
The distinction appears to be expectations: Wall Street is increasingly demanding evidence that AI investment will produce either dramatic new consumer adoption, accelerated revenue or improved profitability.
Simply mentioning artificial intelligence is no longer enough.
Chime rises after $590 million bank deal
Another notable winner was fintech company Chime, which gained roughly 7% after agreeing to acquire longtime partner Stride Bank for $590 million in cash.
The acquisition would give Chime direct ownership of a nationally chartered bank and reduce its reliance on third-party banking partners.
Chime estimates that the transaction could generate more than $100 million in net synergies, while providing greater control over lending, deposits and other banking products.
Reuters reported that investors viewed the acquisition as an important step in Chime’s evolution from a fintech platform into a more vertically integrated financial institution.
But the biggest market story was still oil
Despite the fireworks in individual stocks, Wednesday’s broader market direction was dominated by energy prices.
Brent crude climbed above $100 a barrel for the first time since July as escalating Middle East tensions intensified concerns about oil supplies.
Higher oil prices create a difficult chain reaction for equity investors.
More expensive crude can increase gasoline, transportation and manufacturing costs. That can feed consumer inflation, weaken household spending power and make it harder for the Federal Reserve to reduce interest rates.
The U.S. 10-year Treasury yield also climbed to around 4.85%, adding another source of pressure on growth stocks and other rate-sensitive assets.
Reuters reported that traders were assigning roughly a 60% probability of a Federal Reserve rate increase the following week, reflecting just how dramatically the combination of energy prices and inflation concerns had altered expectations.
One trading day, two completely different Wall Streets
Wednesday therefore produced two versions of the stock market at once.
At the index level, investors were worried about $100 oil, inflation, rising Treasury yields and geopolitical instability.
At the individual-company level, however, money moved violently toward—or away from—specific stories.
Meta gained more than 6% because investors saw another potentially massive AI opportunity.
Signet jumped around 24% because earnings and guidance were better than expected.
Centerspace rallied nearly 9% because investors were offered a merger premium.
Meanwhile, Casey’s lost roughly one-sixth of its market value despite reporting record-level profit growth, and ServiceTitan lost almost one-third despite beating quarterly expectations.
That is the lesson behind the biggest movers of September 9:
In a market carrying high valuations and high expectations, beating last year is no longer enough. Companies increasingly have to beat what Wall Street already imagined—and sometimes they have to beat it by a lot.
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