(Emin Sansar/Getty Images)

Sandisk blows past quarterly earnings expectations, forecasts blockbuster Q3 numbers

It was the best performer in the S&P 500 last year. It’s already doubled in January. And shares are soaring after-hours.

Matt Phillips

1/29/26 4:12PM

Data storage company Sandisk, the poster child for AI-linked stocks that have gone parabolic amid a scramble to build out data centers, reported blowout fiscal second-quarter earnings after the close of trading on Thursday.

Shares are up more than 20% premarket, as of 4:45 a.m. ET.

Here’s what it reported:

Non-GAAP diluted earnings per share of $6.20 vs. the $3.62 forecast by Wall Street analysts polled by FactSet.
Revenue of $3.03 billion vs. a $2.69 billion consensus forecast from FactSet.
Guidance for Q3 non-GAAP EPS of $12 to $14 vs. Wall Street’s $5.11 expectation.
Guidance for Q3 revenue of $4.40 billion to $4.80 billion vs. the $2.93 billion analyst forecast.

“This quarter’s performance underscores our agility in capitalizing on better product mix, accelerating enterprise SSD [solid-state drive] deployments, and strengthening market demand dynamics, all at a time when the critical role that our products play in powering AI and the world’s technology is being recognized,” said CEO David Goeckeler.

Best known as a maker of less than sexy data storage products like thumb drives and USBs, Sandisk has seen its shares explode since it was spun off from former owner Western Digital in February 2025.

Sandisk rose nearly 560% in 2025, making it the best-performing stock in the S&P 500, to which it was added in November. And the momentum has only accelerated in 2026, with the shares up more than 120% in January alone.

Tasha Matsumoto

Stocks eke out gains on hopes for a path forward for reopening the Strait of Hormuz

Stocks rebounded on news that Iran is drafting a protocol with Oman to “monitor transit” through the crucial Strait of Hormuz.

Matt Phillips10h

AI server cluster maker Penguin Solutions takes flight

Small-cap AI server cluster maker Penguin Solutions surged Thursday after posting better-than-expected Q2 revenue and profit numbers Wednesday after the close, along with an increase in full-year sales and profit guidance.

The company, which was known as Smart Global Holdings until July 2024, has positioned itself as a provider of “end-to-end AI infrastructure solutions.”

Its Advanced Computing division designs and sells computers, cabling, and cooling systems, the server racks and clusters of racks AI data centers need. Its other main division sells flash and DRAM memory products.

It’s a pretty small company, with a fully diluted market cap of just over $1 billion and roughly 2,900 employees, according to FactSet.

The stock is volatile. Penguin dove during last year’s tariff tantrum that followed “Liberation Day” in April. Then it turned tail and doubled through early October amid a surge of call options activity, which tends to reflect retail interest. From the October peak, it then plunged by about 50%, before Thursday’s renaissance.

For what it’s worth, call options activity in Penguin is pretty busy today, too — relatively speaking — with roughly 2,625 traded as of 1:15 p.m. ET. That’s the most since early January, when the company last reported quarterly numbers. The average volume over the previous 25 trading sessions is about 325 calls a day, FactSet data shows.

Penguin Solutions Stock Takes Off On AI Bolstered Outlook

The company, which was known as Smart Global Holdings until July 2024, has positioned itself as a provider of “end-to-end AI infrastructure solutions.”

It’s a pretty small company, with a fully diluted market cap of just over $1 billion and roughly 2,900 employees, according to FactSet.

Luke Kawa13h

Momentum returns to optics stocks as the release valve for AI optimism

Potentially imminent end to the war? Buy optics stocks.

Maybe not? Buy optics stocks anyway.

Effectively all the juice left in the AI trade is coming from optics (and memory) stocks. And the latter group is taking a bit of a breather today while the former continues to surge.

Shares of Ciena Corp., Lumentum, and Coherent are building on recent big gains and among the biggest gainers in the S&P 500 near midday, while Applied Optoelectronics is also surging on Thursday.

These companies all provide solutions that help information move around in data centers, and thus are key beneficiaries of the aggressive capex plans of hyperscalers. Nvidia has invested $2 billion apiece in Coherent and Lumentum in deals that also include purchase commitments.

Matt Phillips14h

Space stocks rip during a topsy-turvy day for the equity market

Satellite-services-from-space stocks surged Thursday after reports that Amazon is in talks to buy Globalstar, which provides voice and connectivity services from its satellite network. It also can’t hurt that the general mood around space is ebullient, following the successful launch of Artemis II on Thursday.

Planet Labs and ViaSat also soared on the news.

The gains for EchoStar — seen as a backdoor play at pre-IPO SpaceX exposure — and Rocket Lab were more muted, perhaps because a deep-pocketed competitor like Jeff Bezos getting serious about space services could complicate the plans of the two largest commercial space launch companies.

Rocket Lab and SpaceX see launch services as key to their aspirations of being major providers of voice and data services from low-Earth orbit satellites.

Tesla CEO Elon Musk’s SpaceX is the dominant provider of such services, and the early rumors on the company’s planned IPO — expected to be the largest ever — suggest the market is very excited about the prospects for the industry.

Elsewhere in the space stock world, Intuitive Machines — a maker of space infrastructure that provides services to NASA for lunar missions — also rose.

Globalstar surges after FT reports that Amazon is in talks to buy the satellite group

Rocket Lab and SpaceX see launch services as key to their aspirations of being major providers of voice and data services from low-Earth orbit satellites.

Elsewhere in the space stock world, Intuitive Machines — a maker of space infrastructure that provides services to NASA for lunar missions — also rose.

Hyunsoo Rim, David Crowther

Can Sandisk do the double?

14h

The S&P 500 just had its worst quarter in years. Here are the biggest winners and losers.

Sandisk and energy stocks soared while software names sank amid a broad sell-off in tech stocks.

Balancing balls of different sizes on pink seesaws creating equilibrium