Key Takeaways

• Memory and storage earnings are the next test of the AI trade after Alphabet and Tesla disappointed on Thursday 23 July 2026.

• Seagate and Logitech report next week; Sandisk and Western Digital the week after, VanEck's Alice Shen notes.

• Demand for HBM, DRAM and hard drives has driven a sharp 2026 price surge, lifting Micron, Samsung and SK Hynix.

• The bear case is cyclicality: past memory booms have ended in gluts, and large capacity expansions are already planned.

• Australian investors have few local names and typically gain exposure via US-listed stocks or ASX-quoted semiconductor ETFs (general information, not advice).

After weak results from Alphabet and Tesla rattled the artificial-intelligence trade, attention turns to the companies that store and move data. A wave of memory and storage earnings will test whether soaring demand is finally showing up in profits — or whether investors are late to a famously cyclical party.

The AI trade shifts from the brain to the memory

For three years the artificial-intelligence rally has been powered by the "brains" of computing — the graphics processors made by Nvidia and its peers. This week, investors were reminded that spending on those chips has to eventually produce profits.

On Thursday 23 July 2026, shares in Tesla fell 14.5 per cent and Alphabet dropped 6.9 per cent (US market close, in US dollars), as results raised concerns that enormous AI investments were not yet translating into stronger earnings. The sell-off sharpened a question that had been building for months: who actually makes money from the AI build-out?

Part of the answer may sit one layer down the technology stack, in the unglamorous business of remembering and storing data.

"The market has spent years focused on the brains of AI, but the next constraint may be its memory," VanEck portfolio manager Alice Shen said. "AI models are consuming and generating enormous volumes of data, creating demand not only for more computing power, but for the storage, networking and enterprise hardware required to support it. Earnings season will provide an important test of whether this demand is translating into stronger profits."

That test arrives quickly. Seagate and Logitech are scheduled to report next week, according to Shen, with Sandisk and Western Digital following the week after. Their numbers will show whether the memory-and-storage thesis is real — or already priced in.

Memory versus storage: a plain-English guide

The terms are often blurred, but they describe different jobs.

Memory is the fast, short-term workspace a computer uses while it is running. The main type is DRAM (dynamic random-access memory) — the chips that hold the data a processor is actively working on. Memory is quick but "volatile": switch the power off and its contents vanish.

Storage is the long-term filing cabinet. It keeps data whether the power is on or off. There are two broad kinds: NAND flash, the chip-based memory inside solid-state drives (SSDs) and phones; and hard disk drives (HDDs), the older spinning-platter technology still used for cheap, bulk storage in data centres.

Sitting at the centre of the AI story is a specialised form of memory called HBM (high-bandwidth memory). HBM stacks DRAM chips vertically and places them right next to an AI accelerator, so vast amounts of data can move between memory and processor very quickly. Modern AI chips are frequently limited less by raw computing power than by how fast they can be fed data — the so-called "memory wall". HBM is the industry's answer, and it has become one of the most sought-after products in semiconductors.

In short: AI models need somewhere to think (memory), somewhere to keep their training data and outputs (storage), and a very fast pipe between the two (HBM). Each is a distinct market with its own suppliers.

The players and the cycle

The memory chip industry is a concentrated one. Three companies dominate DRAM and HBM: South Korea's Samsung Electronics and SK Hynix, and America's Micron Technology. NAND flash adds Japan's Kioxia and Sandisk (spun out of Western Digital) to the mix. In hard drives, Seagate and Western Digital form what analysts often describe as a duopoly.

The crucial thing for investors to understand is that memory is deeply cyclical — arguably the most cyclical corner of technology. Because DRAM and NAND are largely commodities, prices swing hard. When demand outstrips supply, prices and profits soar; manufacturers then race to build new capacity; supply catches up and overshoots; prices collapse; and the industry swings into losses until the cycle turns again.

The most recent bust was in 2022 and 2023, when a post-pandemic glut sent memory prices tumbling and pushed several makers into heavy losses. That memory of pain is precisely why some investors are cautious about today's boom.

What is driving the current surge

The 2026 upswing has been unusually sharp. Research firm TrendForce forecast in January 2026 that conventional DRAM contract prices would rise 55 to 60 per cent quarter-on-quarter in the first quarter of 2026, with server DRAM climbing more than 60 per cent and NAND flash rising 33 to 38 per cent (all figures are forecasts, in US dollars, quarter-on-quarter). Suppliers reported tightening inventories as US cloud providers locked in capacity early.

Three forces are behind the move.

First, HBM. Demand for high-bandwidth memory tied to AI accelerators has run ahead of what manufacturers can make. Micron said in its fiscal third-quarter update (quarter ended June 2026) that HBM demand remained above supply across its current and next-generation products — a statement echoed by SK Hynix, which has positioned HBM as its primary profit driver for 2026.

Second, sheer data volume. Training and running large AI systems generates and consumes enormous quantities of data, feeding demand for both fast memory and bulk storage.

Third, hard drives. In a striking sign of how far the demand has spread, Western Digital reported it had effectively sold out its 2026 hard-drive production, with supply agreements extending towards 2028 and the overwhelming majority of revenue tied to hyperscale cloud customers (company disclosures reported in February 2026). Seagate has described similar pricing power.

The share-price response has been dramatic. By early 2026, storage and memory names were among the market's strongest performers, with several US-listed stocks doubling or more over the prior year (in US dollars). That is the bullish case in one line: a genuine supply shortage, multi-year contracts, and pricing power the sector has rarely enjoyed.

The case against

The bear case is equally straightforward, and it rests on history.

Cyclicality has not been repealed. The famed investor Michael Burry disclosed a short position against Micron during 2026, arguing that the stock "defines cyclicality like no other" — that memory shares are bid up in good times and dumped when sentiment turns. Whether or not that specific call proves right, it captures a real risk: buying a cyclical business at peak margins can be dangerous, because the earnings that justify the price may not last.

Supply is coming. Samsung and SK Hynix have flagged plans to invest heavily in new capacity over the coming decade, and SK Hynix has signalled it intends to roughly double DRAM output over several years. Some analysts warn that if all the announced factories come online as demand normalises, prices could fall sharply — a return of the classic glut. There is no consensus on timing, and forecasts of steep price declines are estimates, not certainties.

There is also the question hanging over the whole AI trade. This week's reaction to Alphabet and Tesla showed that investors are increasingly asking whether AI capital spending will keep growing. If the hyperscalers that are buying memory and drives slow their spending, the demand underpinning the current shortage could soften faster than new supply can be switched off.

Finally, valuations already embed a lot of optimism. When a stock has doubled on a shortage narrative, the earnings test that Shen describes becomes two-sided: strong results may be needed simply to justify the price, not to push it higher.

How Australian investors typically get exposure

For Australian retail investors, direct exposure is awkward. There are essentially no ASX-listed pure memory or storage manufacturers of scale. The dominant names — Micron, Western Digital, Seagate, Sandisk, plus the Korean and Japanese majors — are listed overseas.

In practice, exposure tends to come three ways, and none of the following is a recommendation to buy or sell:

- US-listed shares bought through an international brokerage account, which carry currency risk (US dollar versus Australian dollar) and, for some, higher single-stock volatility. - ASX-quoted semiconductor ETFs, such as the Global X Semiconductor ETF (ASX: SEMI) and the VanEck Global Semiconductor ETF (ASX: SMHG), which hold baskets of chip companies. These spread risk across the sector but are typically weighted towards the largest names, so memory is only part of the mix. - Broad global technology funds, where memory and storage sit inside a wider portfolio.

Fees, currency exposure, tax treatment and how concentrated a fund is in a handful of stocks all vary, and investors would need to weigh these against their own circumstances.

What investors may watch next

The near-term calendar is the obvious focus. Seagate and Logitech report next week, and Sandisk and Western Digital the week after. Markets will be watching not just headline profits but forward guidance, order backlogs and any commentary on how long the current pricing strength can hold.

Beyond earnings, the signal to watch is pricing itself. DRAM and NAND contract prices — tracked by firms such as TrendForce — are the sector's real-time barometer. Continued increases would support the shortage thesis; a levelling-off or decline would be the first hint that supply is catching up.

For now, the memory-and-storage complex offers a clean version of the AI question. The demand is visible and the shortages are real. Whether that becomes durable profit, or the next chapter in a decades-old boom-and-bust, is exactly what this earnings season is likely to reveal.