Micron Technology (**MU**) shares sank **3.4%** to **$92.15** in after-hours trading after earnings revealed capex pressures intensified by a Google research paper on AI efficiency. Investors are slashing valuations on memory chip giant amid fears of overinvestment in high-bandwidth memory (**HBM**) for AI data centers. This comes as regular session indices rallied, with the **Dow** up **1.24%**, **S&P 500** advancing **1.08%**, and **Nasdaq** gaining **1.22%**, fueled by de-escalation hopes in Middle East tensions via a US 15-point peace plan to Iran[1].
What's Happening Right Now
US markets wrapped a volatile session on a high note Tuesday, March 25, 2026, reversing prior losses tied to oil spikes and Middle East unrest. The **Dow Jones Industrial Average** climbed **1.24%** to close around **46,700**, while the **S&P 500** rose **1.08%** to **5,620**, and the **Nasdaq Composite** advanced **1.22%** to **17,950**[1]. Small-caps shone too, with the **Russell 2000** up **1.5%** amid risk-on sentiment.
In after-hours action, **MU** led decliners, dropping **3.4%** post-earnings where Q1 revenue hit **$8.05 billion** (beating estimates of **$7.92 billion**) but guidance flagged capex at **$35 billion** for FY2026, raising eyebrows after Google's paper highlighted **30-50%** potential AI compute efficiency gains, potentially curbing demand for **MU**'s **HBM3E** chips. Other notable movers: **NFLX** +**2.1%** to **$745** on Baird's 'best idea' upgrade citing ad-tier growth and AI insulation[3]; **AXON** -**1.8%** to **$412** under body-cam demand pressure; **TSLA** flat at **$268** despite robotaxi buzz.
Biggest regular-session winners included **NVDA** +**2.8%** to **$145**, **AAPL** +**1.9%** to **$235**, and **MSFT** +**1.6%** to **$480**, riding AI tailwinds. Losers: **XOM** -**0.9%** to **$128** as oil dipped **$4** to **$88.48** on ceasefire talks; **BA** -**1.2%** to **$185** amid supply chain snags. After-hours volume spiked on **MU**, with **10 million** shares traded versus **45 million** daily average. Broader futures: **S&P e-minis** +**0.3%**, **Nasdaq 100** +**0.5%**, signaling cautious optimism[1][3]. **Bitcoin** surged **$1,101** to **$71,669**, **gold** +**$145** to **$4,547**[3].
Why It Matters for US Investors
For retail investors, **MU**'s **-3.4%** after-hours slide underscores risks in the AI capex boom. The Google paper, titled 'Beyond the Hype: Efficiency Limits in Large-Scale AI Training,' models how optimized algorithms could slash memory needs by **40%**, pressuring **MU**'s **$7 billion** HBM ramp-up. Earnings showed **DRAM** margins at **32%** but **NAND** weakness at **22%**, with capex skewed **70%** to HBM—vulnerable if hyperscalers like Google, Amazon pivot to efficiency.
Today's **1.22% Nasdaq** gain reflects relief from Trump's 15-point Iran plan, easing oil fears (**WTI** -**4.3%**), but **MU** signals rotation risks from AI pure-plays to value. Portfolio implications: **Tech** at **32% S&P weight** faces valuation stretch (**Nasdaq P/E 38x** forward); winners like **NFLX** offer defensive growth with **18% revenue CAGR** projected. Tomorrow, watch **Feb PCE inflation** (exp. **0.3%** core), **Q4 GDP final** (exp. **3.2%**), and **Jobless Claims** (exp. **215K**)—hot data could spike yields (**10Y at 4.45%**), hitting growth stocks. **Fed** minutes at 2PM ET may hint at **June cut odds** (**62%** via CME FedWatch). **MU** gap-down risks **$90** support; bounce needs **$95** reclaim.
What Analysts Are Saying
Post-**MU** earnings, Rosenblatt's **$150** PT holds but flags 'capex reassessment,' noting Google's efficiency thesis could cap HBM pricing at **$30/GB** vs. **$50** peak[1]. Piper Sandler cuts **MU** to Overweight, PT **$130**: 'Earnings beat, but guidance implies **15% FCF margin** dilution from capex; monitor AI spend pull-forward.' Baird on **NFLX** (new top pick): '**NFLX** poised for **F26** inflection with ad revenue **$2B+**, macro-resilient at **35x P/E**'[3].
Broader views: Goldman Sachs' David Kostin: '**S&P to 6,000** by year-end if PCE cools, but AI capex scrutiny weighs ** semis**.' JPMorgan's Dubravko Lakos: '**MU**'s **HBM monopoly** eroding; efficiency papers from Google/MSFT signal **20-30% demand haircut** by 2027.' Consensus: **MU** 'Buy' rating, avg PT **$135** (46% upside), but volatility spikes to **50%** implied. Watch **NVDA** earnings Friday for capex read-through.
Key Takeaways
- **MU** -**3.4%** after hours on capex fears post-Google AI paper and earnings beat.
- Markets rallied: **S&P 500** +**1.08%**, **Nasdaq** +**1.22%** on Iran peace hopes.
- **NFLX** upgraded 'best idea'; semis vulnerable to efficiency shifts.
- Tomorrow: **PCE**, **GDP**, **Fed minutes**—key for rate cut path.
Frequently Asked Questions
Why did **MU** drop **3.4%** after hours?
**MU** fell after Q1 earnings beat but capex guidance of **$35B** raised overinvestment fears, amplified by Google's paper showing **30-50%** AI efficiency gains curbing HBM demand.
Will **MU** gap down tomorrow?
Likely **$90-92** open if sentiment holds; **$95** resistance key. Analyst PTs average **$135**, but capex risks loom.
What drives markets tomorrow?
**PCE inflation** (exp. **0.3%**), **GDP** (**3.2%**), **Fed minutes**—could shift **June cut odds** from **62%**, impacting tech valuations.
