Stock Market Today: Stocks Rise After PPI Report, Arm IPO
The main indexes closed comfortably higher, while Arm stock soared on its first day of trading.


Stocks opened higher Thursday following the latest inflation data and built on those gains as the session wore on. Investor sentiment also got a lift from Arm Holdings' (ARM) initial public offering (IPO), with the chipmaker sizzling on its first day of trading.
This morning's producer price index (PPI), which measures what businesses are charging suppliers for goods, painted a similar picture to yesterday's Consumer Price Index (CPI). Specifically, the Bureau of Labor Statistics said earlier the August PPI rose 0.7% month-over-month, faster than July's 0.4% increase, as gas prices spiked. Core PPI, which excludes volatile food and energy prices, was unchanged from the month prior, but rose at a quicker annual pace (3.0% vs July's 2.9%).
Also on the economic calendar was initial jobless claims, which edged up by a modest 3,000 last week to 220,000. Additionally, retail sales increased for a fifth straight month in August due to higher sales at gas stations.

Sign up for Kiplinger’s Free E-Newsletters
Profit and prosper with the best of expert advice on investing, taxes, retirement, personal finance and more - straight to your e-mail.
Profit and prosper with the best of expert advice - straight to your e-mail.
None of these data points does much to move the needle on expectations the Federal Reserve will pause rate hikes at next week's meeting. Indeed, futures traders are pricing in a 97% chance the central bank will keep interest rates unchanged at next week's meeting, according to CME Group.
Arm IPO comes in hot
The day's headlines did not solely revolve around the economy and interest rates, however. Another major news story was Arm's blockbuster IPO. The Softbank-owned chipmaker that was previously a Nvidia (NVDA, +0.2%) takeover target last night priced its IPO at $51 per share – the high end of its range – and opened today at $56.10. Shares reached $66.28 in intraday trading before settling at $63.59.
"The ARM IPO is the most hyped listing we've had in the markets for a while, with rising rates and volatility in equity markets dampening new listings over the past two years," says Kyle Rodda, senior market analyst at brokerage firm at Capital.com.
But not everyone is as excited as investors about the Arm IPO. David Trainer, CEO New Constructs, a research firm powered by artificial intelligence, says this offering creates "a valuation that is completely disconnected from the company’s fundamentals." As such, there's likely "very limited upside ahead" for ARM.
Buffett sells HPQ shares
Elsewhere, HP (HPQ) slumped 1.8% after a regulatory filing revealed Warren Buffett's Berkshire Hathaway (BRK.B, +0.5%) sold 5.5 million shares of the PC and printer maker. Buffett & Co. initiated a stake in HPQ in the first quarter of 2022 and owned 120.9 million shares at the end of Q2 2023, representing 1.1% of the Berkshire Hathaway equity portfolio.
As for the major indexes, the Nasdaq Composite rose 0.8% to 13,926, the S&P 500 gained 0.8% to 4,505, and the Dow Jones Industrial Average added 1.0% to 34,907.
Related content
Get Kiplinger Today newsletter — free
Profit and prosper with the best of Kiplinger's advice on investing, taxes, retirement, personal finance and much more. Delivered daily. Enter your email in the box and click Sign Me Up.
With over a decade of experience writing about the stock market, Karee Venema is the senior investing editor at Kiplinger.com. She joined the publication in April 2021 after 10 years of working as an investing writer and columnist at a local investment research firm. In her previous role, Karee focused primarily on options trading, as well as technical, fundamental and sentiment analysis.
-
10 Best High-Yield Savings Accounts to Grow Your Tax Refund
If you're getting a tax refund this year and want to grow it, here are the best high-yield savings accounts to make it happen.
By Sean Jackson Published
-
TurboTax: Features, Pricing and Filing Options
Is TurboTax worth it in 2025? Explore the pros, cons, pricing tiers and standout features of this popular tax software to see if it fits your filing needs.
By Carla Ayers Published
-
Stock Market Today: Markets Celebrate Trump's Tariff Détente
Consumer discretionary stocks led the 11 S&P 500 sector groups well into the green.
By David Dittman Published
-
Stock Market Today: Stocks Struggle After Big Fed Gains
An unexpected rise in existing home sales couldn't save stocks on Thursday.
By Karee Venema Published
-
Stock Market Today: Stocks Enjoy a Fed Day Relief Rally
The question now is whether Jerome Powell and other policymakers can get the balance right given all the new noise.
By David Dittman Published
-
The Free-Lunch Strategy to Reduce Risk From Tech Stocks
A recent rout in tech stocks has some investors thinking more defensively. This "free-lunch portfolio" strategy can help.
By Anne Kates Smith Published
-
Stock Market Today: Stocks Skid Into Another Risk-Off Turn
The promise of the AI revolution can't overcome flickering hopes for a "Fed put."
By David Dittman Published
-
Stock Market Today: Dow Adds 353 Points Despite Soft Retail Sales
Investors and traders shake off another set of shaky economic numbers and send 10 of 11 sectors higher on Monday.
By David Dittman Published
-
CoreWeave IPO: Should You Buy CRWV Stock?
The CoreWeave IPO will mark the biggest public offering of the year, with the AI cloud company expected to start trading on the Nasdaq in late March.
By Karee Venema Last updated
-
Should You Sell Tesla Stock as Elon Unrest Grows?
Tesla's CEO is wearing many hats and is managing them "with great difficulty."
By David Dittman Published