Alphabet's Capex Shock Sends Samsung, SK Hynix Up 2% Premarket

Alphabet just handed the memory chip trade a fresh catalyst: hours after Google's parent reported second-quarter results and raised its 2026 capital expenditure guidance, Samsung Electronics and SK Hynix both jumped roughly 2% in premarket trading on South Korea's Nextrade platform.

Photo by StockRadars Co., on Pexels

What happened

Alphabet reported Q2 2026 revenue of $119.80 billion, ahead of the $116.93 billion analysts expected, with Google Cloud revenue surging 82%. But the number that moved markets wasn't revenue or earnings per share — it was capex. Alphabet lifted its full-year 2026 capital expenditure guidance to a range of $195 billion to $205 billion, up from the $180-190 billion range it had given just a quarter earlier, and said it expects capex to rise "significantly" again in 2027. CFO Anat Ashkenazi said the increase was "primarily due to an acceleration in the delivery of capacity to meet growing demand," adding that Google remains "in a supply-constrained environment." As I covered in Alphabet Sinks 4% After Hours as AI Capex Spooks Wall Street, GOOGL itself sold off in after-hours trading on the guidance hike, as investors weighed the near-term margin hit from that spending.

Why it matters for Korean chipmakers

What spooked GOOGL holders read as good news eight time zones away. On Nextrade's premarket session, Samsung Electronics traded around 272,500 won and SK Hynix climbed toward 1,977,000 won, both up in the 2% range, according to local financial media. The logic: Alphabet's raised capex guidance signals that hyperscaler AI infrastructure spending — and by extension demand for the high-bandwidth memory (HBM) and DRAM that go into AI servers — is not slowing down, even as one of the biggest spenders in the space took some near-term earnings pain for it. Alphabet is the first of the major hyperscalers to report this earnings season, making its capex signal an early read on whether the broader AI buildout is holding up.

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Who else is affected

The move wasn't confined to the two memory giants. Local reports noted broader strength in SK Square, Samsung Electro-Mechanics, Hyundai Motor, and LG Energy Solution in the same premarket session, suggesting the reaction extended beyond pure-play semiconductor names into Korea's broader large-cap complex. The premarket bounce also follows a stretch of choppy trading for both stocks: as I noted in Samsung, SK Hynix Spike Then Fade Despite S&P's Bullish Nod, recent rallies in these names have struggled to hold, with brokerages like LS Securities flagging the stocks as oversold heading into this specific Alphabet print. That sets up Alphabet's capex number as a potential inflection point rather than just another data point.

It also connects to the demand-side story I laid out in SK Hynix's 'Efficiency Paradox': AI Savings Fuel More Memory Demand: even as AI infrastructure gets more efficient per dollar spent, the scale of hyperscaler build-outs keeps growing, and that keeps memory demand firm. Alphabet's guidance hike is a direct data point supporting that thesis.

What to watch next

The premarket pop is a reaction, not a verdict. Traders should watch three things over the coming days: first, how Samsung and SK Hynix trade once the regular Korean session opens and volume builds beyond the thinner Nextrade premarket book; second, whether other hyperscalers reporting this earnings season — Microsoft, Meta, and Amazon among them — confirm or contradict Alphabet's capex acceleration; and third, whether Wall Street's initial negative reaction to GOOGL's after-hours drop persists once investors digest the 82% cloud growth and demand-driven rationale behind the spending increase. If subsequent hyperscaler reports echo Alphabet's "supply-constrained" language, that reinforces the bullish memory-demand case for Samsung and SK Hynix. If capex guidance elsewhere disappoints, this premarket move could prove as short-lived as the spike-then-fade pattern seen in recent weeks.

This is not financial advice — always do your own research before making investment decisions.

Bottom line: Alphabet's capex guidance hike created a split reaction — punishing GOOGL for near-term spending risk while lifting Korean memory chip stocks on the read-through to AI infrastructure demand. Both reactions are rational responses to the same number; which one holds up depends on what the rest of the hyperscaler earnings calendar says in the coming weeks.