Weekly Market Update: AI euphoria just met its first proper stress test
This week, markets wrestled with a viral AI doomsday report, mixed reactions to blockbuster Nvidia earnings, a $100B‑plus AI chip deal between Meta and AMD, and the start of Trump’s new 10% global tariff regime. The result: choppy index moves, a wobble in AI high‑flyers, and a slow rotation into less tech‑heavy parts of the market.
📊 What’s happening
US indices: volatile, not collapsing.
After big swings, the S&P 500 is roughly flat year‑to‑date and on track for its worst month since March, while the Nasdaq is down around 2.5% for 2026 and having its weakest month in nearly a year. The Dow is holding up better, up around 2% year‑to‑date, helped by its lower exposure to mega‑cap tech. Mid‑week, the S&P, Dow and Nasdaq all posted gains of about 0.8–1% as AI worries temporarily eased, but they gave back ground after another tech selloff later in the week.AI panic 1: Viral “AI unemployment at 10%” report hits software.
A widely shared report from Citrini Research sketched a 2028 scenario where AI drives US unemployment above 10%, triggers loan defaults, and knocks the S&P 500 down more than 30%. Investors dumped software and other AI‑exposed “losers”, sending the US software index down over 20% year‑to‑date, while money flowed into AI “plumbing” like chips, data centers, and energy. Volatility picked up, with the VIX jumping into the low‑20s, well above its recent lows.AI panic 2: Nvidia crushes earnings… and still sells off.
Nvidia reported fourth‑quarter revenue up 73% year‑on‑year and guidance that beat Wall Street estimates, reinforcing that AI demand is still booming. Yet the stock fell about 5–6% on the day – its worst drop in roughly 10 months – as investors questioned how long the AI spending boom can last and whether current valuations already discount perfection. CEO Jensen Huang pushed back on the “AI scare trade,” arguing markets are overreacting to fears that agentic AI will destroy software business models.Biggest single stock story: Meta’s $100B‑plus AMD chip deal.
Meta signed a multi‑year agreement to buy around 6 gigawatts of AI compute from AMD, a package worth more than $100 billion if fully exercised. The deal includes warrants that could give Meta up to 10% of AMD’s equity, cementing AMD as a serious alternative to Nvidia in AI infrastructure. AMD shares jumped high‑single digits on the news, while it added another competitive overhang to Nvidia’s future pricing power.Macro wildcard: Trump’s 10% global tariffs quietly go live.
After the Supreme Court struck down his previous tariff framework, President Trump imposed a new 10% global tariff under Section 122, effective 24 February, with a threat to lift it to 15% later. The move adds a broad tax on imports for up to 150 days, with some product‑level exemptions but no country carve‑outs. Markets mostly shrugged at the 10% rate – a step down from the 15% he flagged over the weekend – but see it as a modest drag on growth and inflation‑positive at the margins.Data: “Hot” wholesale inflation adds to jitters.
Late in the week, stronger‑than‑expected US wholesale inflation (PPI) combined with tech weakness to push the S&P 500 down roughly 0.8% on the day, with similar losses in the SPY ETF. It doesn’t yet derail the broader disinflation trend – CPI earlier this month came in around 2.4% year‑on‑year, the lowest since mid‑2025 – but it is enough to keep the Fed cautious and bond yields volatile.Global view: Europe near records, Asia shrugs off tariffs.
Europe’s STOXX 600 is sitting just below all‑time highs, up roughly 6–7% year‑to‑date after hitting record closes last week, even as trade uncertainty lingers. In Asia, South Korea and Taiwan are at or near record highs, helped by their chip giants’ strength amid the AI hardware boom, while broader indexes were mixed as investors digested the new US tariffs.
🔍 Why it matters
1. The AI trade is shifting from “anything with AI in the deck” to “who actually gets paid.”
The combination of a dystopian AI unemployment report, Nvidia’s “beat-and-drop” earnings, and Meta’s huge pivot to AMD underlines a rotation already underway: software and AI‑exposed business models are being repriced down, while AI infrastructure (chips, compute, energy, data centers) and diversified cash‑generators are holding up better. Markets are starting to treat AI as a real technology cycle with winners and losers, not a one‑way valuation escalator.
2. Earnings strength is no longer enough if expectations are extreme.
Nvidia’s numbers were objectively huge, but the stock still sold off because positioning and expectations were crowded on the upside. That’s a warning for the broader AI complex: even strong fundamentals can’t protect you if price already embeds years of flawless execution. This is classic late‑stage growth behavior – earnings “beats” that fail to send stocks higher.
3. Tariffs reintroduce a slow‑burn macro headwind.
A 10% blanket tariff functions as a broad tax on US consumers and import‑reliant companies, nudging up costs in sectors from autos to electronics. Markets didn’t panic – partly because the rate was lower than the 15% floated and because it’s time‑limited – but over months this can shave margins and complicate the Fed’s inflation fight. It also raises geopolitical risk premium, especially for export‑heavy Europe and Asia.
4. Under the surface, leadership is rotating – not disappearing.
Despite the AI wobble, global equities are still near highs, with Europe, small caps, and select cyclicals quietly doing the heavy lifting. The Dow outperforming the Nasdaq, and gains in more boring sectors like staples, healthcare, and industrials, show investors are rediscovering diversification rather than exiting equities altogether.
🎯 Opportunity
None of this is investment advice, but here’s how many investors are thinking about positioning around this week’s moves:
1. Tilt from AI “story stocks” to AI “picks and shovels.”
De‑risk: Highly valued software names and business models that look structurally exposed to AI automation (legacy enterprise SaaS, some white‑collar services) are now being repriced with a higher risk premium.
Re‑allocate: Some investors are rotating toward AI infrastructure – chips, data centers, networking, and power – where demand is more volume‑driven and contracts (like Meta–AMD) provide clearer visibility.
Watch for dislocations: Pullbacks in high‑quality AI leaders with real earnings, cash flow, and competitive moats can be an opportunity to average in more sensibly rather than chase parabolic moves.
2. Use the tariff noise to stress‑test your portfolio’s trade exposure.
Map which holdings rely heavily on imported inputs or export to the US, especially in autos, machinery, and consumer electronics.
Some investors are re‑balancing toward domestically oriented names and companies with strong pricing power that can pass on higher input costs.
On the flip side, tariff‑protected local producers and reshoring beneficiaries (infrastructure, logistics, certain industrials) can see incremental tailwinds over time.
3. Lean into diversification that doesn’t depend on AI doing all the work.
The outperformance of the Dow versus the Nasdaq and the near‑record SToxx 600 suggest that balanced exposure across regions and sectors is back in vogue.
Many allocators are building “barbell” portfolios: on one side, quality growth tied to AI infrastructure and automation; on the other, defensive compounders in healthcare, staples, utilities, and dividend payers that can grind higher even if AI sentiment stays choppy.
4. Re‑assess risk rather than trying to time every headline.
Volatility spikes – like the VIX jumping and intraday 1–2% swings – are a reminder to match position sizing and leverage to your real risk tolerance.
Long‑term investors are using this phase to upgrade portfolio quality – swapping weaker, more speculative names for strong balance sheets, durable cash flows, and reasonable valuations, rather than trying to guess the next AI or tariff headline.
✅ Bottom line
This week was about AI growing pains, not an AI collapse. Nvidia’s blockbuster results and Meta’s monster AMD deal show AI capex is still ramping, even as markets start questioning who really wins – and at what price.
The AI trade is maturing. Markets are distinguishing between infrastructure winners and business‑model losers, and they are no longer rewarding any ticker with “AI” in the pitch deck.
Tariffs and inflation are back as background risks. Trump’s 10% global tariff and hotter wholesale inflation remind investors that policy and macro still matter, even in an AI‑obsessed tape.
For investors, the shift is from concentration to balance. The message from price action is clear: less blind faith in mega‑cap tech, more respect for diversification, quality, and valuation.
Disclaimer: This article constitutes the author’s personal views and is for entertainment and educational purposes only. It is not to be construed as financial advice in any form. Please do your own research and seek advice from a qualified financial advisor. From time to time, I have positions in all or some of the mentioned stocks when publishing this article. This is a disclosure - not a recommendation to buy or sell stocks.