AI Chip Shock: What’s Behind the AMD and Supermicro Sell-Off?

When the AI rally seemed unstoppable, two of its hottest plays—$AMD and Supermicro—tumbled after lackluster quarterly results. $AMD ’s Q2 data-center revenue missed expectations, weighed down by export restrictions. 

Supermicro’s Q4 top line and margins fell short, despite booming GPU demand. Both stocks plunged in after-hours trading: $AMD down 6.3%, Supermicro down 16.3%.

Key Points

1. $AMD revenue: $7.685 B, +31.7% YoY but missed data-center forecast of $3.31 B (actual $3.24 B).

1. $AMD margins: Non-GAAP gross at 43.3%, down ~10 pp YoY; data-center segment posted a $155 M loss vs. $743 M profit a year earlier.

1. $AMD EPS: $0.48 non-GAAP vs. $0.47 consensus; hit by ~$800 M expense tied to U.S. export curbs on its MI308 GPU. Guidance for Q3: $8.7 B ± $0.3 B revenue, ~54% gross margin.

1. Supermicro revenue: $5.757 B, +7.5% YoY but below $5.89 B consensus.

1. Supermicro profitability: Non-GAAP gross margin at 9.6%; adj. EBITDA margin 5.9%; non-GAAP EPS $0.41 vs. $0.44 consensus.

1. Supermicro outlook: Q1 revenue guide of $6-7 B; FY revenue target ≥ $33 B vs. $21.97 B last fiscal year.

What Drove AMD’s Disappointment?

Investors had priced in booming AI demand, but AMD’s data-center growth of 14.3% YoY fell short of expectations. CEO Dr. Lisa Su pointed to U.S. sanctions that halted MI308 GPU exports to China, leading to an $800 M inventory write-down and delayed shipments.

Meanwhile, record EPYC and Ryzen CPU volumes drove server and PC revenue, but couldn’t fully offset the GPU shortfall.

Behind the Numbers: Margin Pressure and Segment Losses

AMD’s non-GAAP gross margin dived to 43.3% from 53.1% a year ago, and sequential margin fell over 10 pp. The data-center unit swung to a $155 M operating loss versus $743 M profit last year. Non-GAAP operating expenses climbed 32% to $2.4 B as AMD doubled down on R&D and go-to-market investments for its AI roadmap.

Management’s Take on the Export Drag

Dr. Su emphasized that, excluding the $800 M export-related charge, margins would have been roughly 54%. She noted that NVIDIA endured a similar pull‑forward, booking $4.5 B in inventory impairment for its H20 GPU in Q1 of FY 2026.

The easing of U.S. export controls under the new administration could reopen the China market—AMD plans to resume MI308 shipments once licenses are approved.

Supermicro’s Cloud Conundrum

Nicknamed the industry’s “shovel seller,” Supermicro should have ridden NVIDIA’s GPU wave, yet its Q4 results disappointed. Although revenue climbed 7.5% YoY, it missed consensus by $130 M.

Tariffs on Chinese imports and a delayed 2024 10-K filing squeezed working capital, slowing capacity expansion. A strategic customer’s design changes also pushed revenue into later quarters.

Margin Squeeze and Deferred Revenue

Supermicro reported a razor-thin 9.6% non-GAAP gross margin, down 0.7 pp YoY, and an adjusted EBITDA margin of just 5.9%. Non-GAAP EPS of $0.41 lagged the $0.44 consensus.

Management attributed the decline to higher component tariffs and inventory financing costs. Deferred revenue from one major OEM’s shifted configurations will now roll into Q1 and Q3.

Guiding to Growth—But at What Cost?

Looking ahead, Supermicro forecasts Q1 revenue of $6-7 B and targets FY 2026 revenue of at least $33 B—15% above last year’s $21.97 B. The company bets on AI-driven demand for turnkey “plug-and-play” server solutions, liquid cooling modules, and software services. However, execution risks and margin pressures loom large.

Investor Call Highlights: Reading Between the Lines

Analysts pressed AMD on AI strategy, MI350 potential, and sovereign AI opportunities.

1. Client vs. Data-Center: Client and gaming grew 69% YoY—driven by Ryzen AI and high‑end CPUs—but may moderate seasonally in H2.

1. MI350 Momentum: Early MI350 production began in June; customers report performance on par or better than competing offerings, spurring accelerated engagements.

1. Sovereign AI Demand: Partnerships like the one with Saudi Arabia’s Humane underscore emerging sovereign compute markets, offering incremental upside beyond hyperscale deployments.

1. Supply-Chain Readiness: AMD’s 8-9 month GPU lead time remains intact. The recent ZT Systems acquisition and divestiture aim to vertically integrate rack design and manufacturing for Helios systems.

Looking Forward: Growth or Pressure?

1. AMD expects Q3 revenue of $8.7 B ± $0.3 B, with 54% non-GAAP gross margins. The ramp of MI350 and EPYC share gains undergird the forecast. U.S. export licenses for MI308 and NVIDIA’s H20 may unlock a China rebound.

1. Supermicro guides Q1 revenue of $6-7 B, targets ≥ $33 B for FY Its focus on AI-optimized servers and services contrasts with persistent tariff headwinds.

Both names embody the highs and lows of the AI hardware boom. Watch for upcoming license approvals, MI350 production cadence, and Supermicro’s margin recovery as catalysts for the next leg. Continuous monitoring of export rulings, supply-chain execution, and macroeconomic trends will determine if these stocks can reclaim their prior momentum.