CHICAGO, ILLINOIS - DECEMBER 23: Benny the Bull, the Chicago Bulls mascot, dresses as Santa Claus in the game against the Milwaukee Bucks during the second half at the United Center on December 23, 2024 in Chicago, Illinois.

(Justin Casterline/Getty Images)

Stocks rise for the third-consecutive session, erasing December losses

Santa baby, just slip a rally under the tree...

All three major US indexes climbed higher in a broad-based rally, with all sector ETFs rising except for consumer staples. The S&P 500 has officially erased December’s losses. Silver and gold hit record highs.

The AI trade got its momentum back, buoyed by positive newsflow in recent days that includes Micron’s earnings and stellar outlook as well as OpenAI’s ever-increasing valuation.

Stocks that moved higher:

As the AI ecosystem bounced back, AI related stocks like neoclouds IREN, Cipher Mining, Nebius, and CoreWeave; AI-adjacent energy play Bloom Energy; and infrastructure provider GE Vernova moved higher. Chip stocks Micron, Nvidia, TSMC, and Advanced Micro Devices rose as well.
Hertz surged on bullish options activity.
Quantum computing stocks D-Wave Quantum, Rigetti Computing, IonQ, and Quantum Computing also surged on bullish options activity.
POET Technologies also jumped on elevated call volumes.
Opendoor Technologies ticked higher after CEO Kaz Nejatian said AI fueled an expansion of the company’s home-buying footprint across the lower 48 US states.
Warner Bros. Discovery rose as Paramount Skydance amended its acquisition offer, which now includes a $40.4 billion personal guarantee from Larry Ellison, the father of Paramount CEO David Ellison. Netflix also got more of its ducks in a row for its WBD offer on Monday, refinancing part of its $59 billion bridge loan with longer-term and lower-cost debt, though the stock slightly dipped.
Google struck a deal to acquire data center and energy infrastructure firm Intersect for $4.75 billion in cash.
Rocket Lab added to Friday’s gain, which came after the company announced a $816 million deal to design and manufacture 18 satellites for the US Space Development Agency on Friday, marking the company’s largest single contract to date.

Stocks that moved lower:

Nintendo dipped after news that its popular “Mario Kart World” bundle is seemingly going out of production, per a post on X from GameStop.

Matt Phillips6h

‘Golden age of profit margins’ seen in 2026

Wall Street tends to be a pretty optimistic place. But on one measure, market watchers are the most optimistic on record.

FactSet data shows the consensus estimate for S&P 500 net profit margins in calendar year 2026 calls for the gauge to climb to 13.9% in 2026.

But if borne out by events next year “it will mark the highest (annual) net profit margin reported by the index since FactSet began tracking this metric in 2008,” wrote John Butters, senior earnings analyst at the financial data company.

A recent story from Barron’s also commented on the expectations for especially fat profit margins embedded into forecasts for next year.

“We are in the golden age of margins,” RBC’s Capital Markets’ head of US equity strategy, Lori Calvasina, told the magazine.

That’s good news for investors looking forward to next year. But the follow up question, of course, is where the growth in profitability is expected to come from. The answer, as you might have guessed, is tech. Though the precise mechanisms by which those profits land in the coffers of the giant tech firms remains something of a mystery. Barron’s doesn’t get into the details, saying “call it benefits from AI, pricing power, or whatever.”

That doesn’t exactly sound like money in the bank. But even die-hard haters of AI have to acknowledge that betting against the ability of giant tech companies to generate massive profit growth has been a bad trade for the last couple decades.

The Stock Market Needs to Focus on Lucky 13

A recent story from Barron’s also commented on the expectations for especially fat profit margins embedded into forecasts for next year.

“We are in the golden age of margins,” RBC’s Capital Markets’ head of US equity strategy, Lori Calvasina, told the magazine.

Luke Kawa7h

Opendoor rises after CEO Kaz Nejatian touts an explosion in its home-buying footprint

Opendoor Technologies gained in early trading after CEO Kaz Nejatian touted an explosion in the company’s home-buying footprint.

In a message on X, the former Shopify COO posted two maps: one of which depicts a fairly limited area in which the online real estate company would buy or sell homes, and the second of which suggests that has now expanded to include the entire lower 48:

Big launch week at @Opendoor.

ZIP codes where @Opendoor buys homes. pic.twitter.com/UplMd4sXJE
— Kaz Nejatian (@CanadaKaz) December 22, 2025

In a follow-up tweet, Nejatian attributed the gains to AI, writing, “First pic took 10 *years* of work without AI. Second pic took 10 *weeks* of work with AI.”

On his first earnings call as CEO, Nejatian said the company had adopted a “default to AI approach.”

One of his first pledges was to launch Opendoor everywhere in the lower 48.

Max Knoblauch7h

Hertz surges on bullish options activity

As millions begrudgingly make their way to the rental car counter amid the winter holidays, investors are pouring into calls and sending Hertz stock soaring.

As of 10:51 a.m. eastern, Hertz had seen 17,861 calls traded. That’s already significantly ahead of the 20-day average volume of 12,956. Hertz shares are up more than 12%.

Seemingly juicing the rally was a post on X that read “car rental companies could end up being the picks and shovels of autonomy” that was reposted by billionaire Bill Ackman, whose hedge fund is one of Hertz’s largest shareholders.

If Hertz’s price action holds, the move will mark its ninth-best trading day of 2025.

Luke Kawa7h

POET Technologies jumps on elevated call activity

Optical communications company POET Technologies is up double digits in early trading on Monday as this potential supporting player in the AI boom gets a bid from the options market.

Just an hour after the opening bell sounded, call volumes are already running well above their five-session average for a full day.

The stock became a retail favorite in early Q4 right before many speculative trades began to retreat, with record call volumes of nearly 600,000 on October 7. The last big bump in options activity came on December 3, the session after Marvell’s acquisition of Celestial AI, a customer of POET, offered some validation for its technology as a data center solution.

Max Knoblauch8h

Nintendo dips after GameStop says the “Mario Kart World” bundle will stop being produced

Nintendo’s popular bundle that packaged the Switch 2 with “Mario Kart World” is seemingly going out of production, per a post on X from GameStop.

Shares of the console maker fell more than 3% after markets opened on Monday, implying some worry from investors that consumers may not be so willing to pay the game’s elevated $80 price tag (it’s valued at $50 in the bundle). About 9.6 million copies of the game have sold since the Switch 2 released in June, a figure that includes the bundled version.

The Switch 2 itself is still looking solid, sales-wise. It was pacing 68% ahead of the original Switch in October, though November saw a sharp market-wide spending drop-off on consoles according to data from Circana. Sony’s PS5 outsold the Switch 2 in both units and dollars last month.