Stock Market Today: Microsoft Gains Boost Stock Market
The blue chip stock popped on news the software giant has snagged OpenAI's ousted CEO to help lead an advanced AI research team.


Stocks closed higher Monday, building on their impressive November gains. There was little in the way of economic news to start the holiday-shortened week, but market participants had plenty of single-stock headlines to track – including a notable analyst note for Wall Street's newest semiconductor stock.
This morning, Wells Fargo analyst Gary Mobley initiated coverage on Arm Holdings (ARM) with an Overweight rating, which is the equivalent of a Buy. "We view ARM as one of the best positioned companies within the $550 billion global semiconductor industry," Mobley says. Among the things that Arm is "well-positioned to benefit" from are China's developing domestic chip industry and higher royalty rates the company can charge for newer-generation chips.
Mobley isn't alone in his bullish outlook for Arm stock, which held its highly anticipated initial public offering (IPO) back in September. According to S&P Global Market Intelligence, 19 analysts have a Buy or Strong Buy rating on the chipmaker, compared to eight holds, one Sell and one Strong Sell.

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.
Arm shares surged 6.7% Monday, with fellow chipmakers Intel (INTC, +2.1%) and Broadcom (AVGO, +1.8%) also gaining ground. Nvidia (NVDA) was another industry winner, rising 2.3% ahead of its Tuesday night turn on the earnings calendar.
Microsoft pops after snagging ousted OpenAI CEO
In other equities news, mega-cap stock Microsoft (MSFT) jumped 2.1% after the company said it is bringing Sam Altman on board to head a new advanced artificial intelligence (AI) research team. In a startling move, Altman was fired as CEO of Microsoft-backed OpenAI on Friday and efforts over the weekend to reinstate him in the role failed. Altman, who is one of OpenAI's co-founders, chose instead to join the software giant.
"We remain committed to our partnership with OpenAI and have confidence in our product roadmap, our ability to continue to innovate," Microsoft CEO Satya Nadella said in a statement. The executive added that Microsoft looks forward "to moving quickly to provide" Altman and fellow OpenAI co-founder Greg Brockman "with the resources needed for their success."
Oppenheimer analyst Timothy Horan calls this a "win-win" for Microsoft, "as it still has full access to the best large language models (LLMs) and now the team to possibly make the next great LLM and the best AI minds in the world to help implement AI." Horan has an Outperform (Buy) rating on the Dow Jones stock.
As for the major indexes, the tech-heavy Nasdaq Composite rose 1.1% to 14,284, the broader S&P 500 gained 0.7% to 4,547, and the Dow Jones Industrial Average finished up 0.6% at 35,151.
As a reminder, the stock and bond markets will be closed Thursday for the Thanksgiving holiday and will close early on Black Friday.
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.
-
Stock Market Today: Investors Look on the Bright Side
A generally good week closes on another positive note, as investors, traders and speculators look for fresh catalysts.
-
My Three-Day Rule for Investing: And If it Applies Now
Stock Market I've seen a lot in my career. Here's what I see now in the stock market.
-
Stock Market Today: Stocks Climb More Walls of Worry
Volatility is back in a normal range, and the trend for the main equity indexes remains positive despite specific and general headwinds.
-
Is It Time to Invest in Europe?
Stock Market Europe is being shaken out of its lethargy, militarily and otherwise, by Donald Trump's changes in U.S. policy. Should investors start buying?
-
Stock Market Today: Nasdaq Outperforms as Big Tech Rallies
The Dow Jones Industrial Average closed lower for a second day as Amgen and Merck fell.
-
Stock Market Today: UnitedHealth Drags on Dow After CEO Splits
UNH created headwinds for the price-weighted Dow on news that its embattled CEO, Andrew Witty, is stepping down.
-
Stock Market Today: Dow Gains 1,160 Points on U.S.-China Trade Deal
The two countries agreed to a 90-day truce that will give them time to work on more substantive trade negotiations.
-
Stock Market Today: Investors Weigh Weekend Negotiations
Investors, traders and speculators will look to Switzerland for answers about the most compelling issue confronting global markets.