Buffett Market Report
Briefing 6 min read

Week Ahead: NVDA Referendum, Jackson Hole, and the Gamma Contagion Clock

Four pillars converge Aug 26-29: AI capex verdict, Powell at Jackson Hole, PCE inflation, Flash PMIs/OpEx — KOSPI 6,697 tests 6,500 support

Week Ahead: NVDA Referendum, Jackson Hole, and the Gamma Contagion Clock

The Setup

Four pillars converge in a 72-hour window (Aug 26-29) that will define Q3 trajectory:

| Date | Catalyst | Pillar | Market Implication |
| | Wed Aug 26 | NVDA Q2 earnings (post-market) | 4 (NVDA Catalyst) | AI capex referendum — Blackwell ramp, China H200, Rubin |
| Thu Aug 27 | Jackson Hole Symposium begins | 1 (Fiscal/Steepening) | Powell speech Fri 10am ET — rate path, balance sheet |
| Fri Aug 28 | Jackson Hole continues | 1, 2 | Global central bank coordination signals |
| Fri Aug 28 | PCE + Flash PMIs + SPX Monthly OpEx | 1, 2, 3 | Inflation validation, growth pulse, gamma pinning |

Pillar 1: AI Capex / Bear Steepening — The Funding Spiral

Current state: 30Y at 5.19% (off 5.32% highs), 5s30s +95bp. Treasury buyback regime shift (Sept 9-Nov 4) provided 9bp relief but fading. Hyperscaler $720-745B capex funded via IG bonds absorbing Treasury buyers.

NVDA Aug 26 is the linchpin:
- Bull case: Blackwell no delays, Q3 guide >$95B, China H200 shipments to 10+ approved cos ($2-4B incremental), Rubin architecture clarity → capex confidence → IG spreads compress → 30Y rallies
- Bear case: Phased Blackwell ramp, supply constraints, Q3 guide <$93B, China H200 minimal, Rubin vague → capex doubt → IG spreads widen >200bps → 30Y tests 5.50% → autocallable acceleration

Options market implies ~5% move (call wall $230, put wall $190, flip ~$214). Four consecutive quarters of beat-but-sell pattern.

Positioning: NVDA puts (2% allocation), Short 30Y (10%), Long XLF (18%) as steepener beneficiary.

Pillar 2: China Credit / Property — Balance Sheet Recession

July data confirmed: -340B yuan new loans (record contraction). Property sales collapsing. LGFV swap quota 90% used. Commercial lease expiry $148B cliff (2030s-2040s).

Transmission: Property → LGFV → UST absorption → higher yields → CNY weaker → global liquidity tightens.

Watch: USD/CNH 7.35 crisis threshold (currently ~7.25-7.30). China data window closed Aug 15 — next impulse signal is September credit/PMI.

Positioning: Long Gold/USD/CNH (15%), Short China property/banks (4%), Short Copper (3%).

Pillar 3: Autocallable Gamma Loop — Korea/Japan Contagion

KOSPI closed 6,697 (-3.12%) on Samsung Electronics disappointment (-6% despite $80B record buyback). This is the first real test post-Liberation Day reopen.

Key levels:
- 6,500: Next technical support — breach = accelerated selling
- 3,500: FSS early warning threshold (10% proximity to knock-in) — still ~46% buffer
- 3,000-2,800: Knock-in barrier cluster — cascade trigger

Transmission: Seoul (ELS delta hedging) → Tokyo (85% correlation) → US pre-market (SK Hynix ADR, SOX, NVDA) → SPX gamma flip at 7,718 → VIX 14→30+.

Positioning: KOSPI/NKY shorts (3%), Long VIX call spreads (3%), SPX put spreads (3%).

Pillar 4: NVDA Catalyst — The AI Capex Referendum

Consensus: Revenue $91-95B (guide $91B ±2%), EPS ~$2.08.

Swing factors:
1. Blackwell ramp: No customer delays vs phased/supply constrained
2. China H200: Confirmed 10+ cos + $2-4B Q3 vs minimal/no timeline
3. Rubin architecture: 2026/2027 roadmap clarity vs vague

Beat-but-sell history: 4 consecutive quarters. Market prices perfection; guidance + qualitative tone drive reaction.

Broader signal: Alibaba $10.2B AI placement (-10%), Samsung $80B return (-6%) = investor skepticism on AI ROI durability.

SPX Technical Framework

| Level | Significance |
| | 7,800 | Call wall / Monthly OpEx pin |
| 7,718 | Gamma flip (resistance, 44 pts) |
| 7,680-7,690 | Dip-buy zone (requires breadth) |
| 7,650 | Invalidation trigger |
| 7,450 | LINE IN SAND (gamma inflection) |
| 7,297-7,300 | Critical gamma zone (cascade) |

Current: SPX 7,674. EMA stack bullish (10>20>50>100>200). 1hr MACD negative, RSI 42. Breadth adv/decl 1.4:1 (need >1.8:1).

Bias: TACTICAL BOUNCE — sell rips to 7,718-7,735 without breadth; buy dips 7,680-7,690 ONLY with breadth confirmation (R2K>3,030, adv/decl>1.5:1). Break 7,650 + VIX>17 + 10Y>4.75% = flip defensive toward 7,450.

Scenario Matrix (Updated)

| Scenario | Probability | SPX Path | Key Trigger |
| | Managed Deceleration | 45% | 7,700-7,820 chop | NVDA inline, Jackson Hole dovish, breadth gradual |
| Bear Steepening | 25% | 7,650→7,450 | NVDA guide cut, 30Y>5.50%, breadth collapses |
| Goldilocks | 15% | 7,850→8,000+ | NVDA blowout, Powell pivot, breadth recovers |
| Gamma Cascade | 10% | 7,450→7,100 | KOSPI<6,500→3,500, VIX>25, dealer short gamma |
| Policy Pivot | 5% | 7,800→8,200+ | Emergency Fed cut, fiscal bazooka |

Portfolio Positioning (Barbell with Convexity)

Core 70%

  • Long Financials/Energy (XLF/XLE): 25% — steepener beneficiary, real asset hedge
  • Short 30Y (TLT puts / futures): 10% — duration overflow from AI capex
  • Long Issuer Debt (IG corporate): 20% — carry + spread compression if NVDA bullish
  • Long Gold / USD/CNH: 15% — debasement hedge, 4:1 asymmetry
  • Cash: 10% — optionality

Convexity 15%

  • VIX call spreads: 3% — gamma cascade insurance (6:1 asymmetry)
  • SPX put spreads: 3% — 7,650→7,450 protection

Tactical 15%

  • NVDA puts: 2% — beat-but-sell, 5% implied move
  • KOSPI/NKY shorts: 3% — gamma contagion vector
  • China banks/property shorts: 4% — balance sheet recession
  • Copper short: 3% — China demand impulse negative
  • Policy pivot lottery: 3% — OTM calls on SPX >7,900

Risk Limits

| Trigger | Action |
| | -8% drawdown | 50% risk reduction |
| SPX < 7,718 (gamma flip) | Flip delta neutral/short, max long VIX |
| 30Y > 5.50% | Max short TLT |
| VIX > 25 | Stop selling vol |
| KOSPI < 3,500 | Max short Korea/Japan |
| USD/CNH > 7.35 | Max long Gold/USD/CNH |

Daily Catalyst Calendar

| Day | Key Events | Watch |
| | Mon Aug 24 | US-Canada tariffs live, Iran 46-ship threat | Brent, CAD, defensives |
| Tue Aug 25 | HD earnings, Consumer Confidence, KOSPI watch | Housing, sentiment, 6,500 |
| Wed Aug 26 | NVDA earnings (post-market), Durable Goods | AI capex verdict |
| Thu Aug 27 | Jackson Hole begins, GDP Q2 2nd est, Jobless Claims | Powell hints |
| Fri Aug 28 | PCE, Flash PMIs, SPX Monthly OpEx, Powell 10am ET | Inflation, growth, gamma pin |

Bottom Line

This week is the most concentrated catalyst cluster of Q3. The four pillars are not independent — they transmit through each other:

  1. NVDA guide → AI capex confidence → IG spreads → 30Y yield → SPX gamma
  2. China credit impulse → CNY → UST absorption → yields → global liquidity
  3. KOSPI → Seoul dealer hedging → Nikkei → US pre-market → SPX gamma flip → VIX

Position for Managed Deceleration (45%) but size convexity for Gamma Cascade (10%) and Bear Steepening (25%). The barbell structure survives the base case while the convexity sleeve pays in tail scenarios.

Next update: Post-NVDA Wednesday, post-Jackson Hole Friday.