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Real Public Cases

Part 4 Mission

Use the five tools from Part 3 (Hedge Fund / Buffett / Bottleneck / Multi-PM / Anti-thesis) to dissect 5 real public events. One case per chapter, all based on public data (earnings / 13F / public interviews / government announcements), 0 paid sources.

Part 4 Backbone

Part 3 gives tools, Part 4 puts them to work. Each case explicitly invokes which Part 3 tools — after learning, you can dissect the next event yourself.

5-Chapter Map

# Title Core One-Liner Which Part 3 Tools Used
C1 DeepSeek Selloff Full Forensic NVDA -17% in one day — panic or thesis broken? All 5 tools (none break)
C2 Samsung Loses HBM Market Share 3 companies in same industry, 1-year stock divergence ±150% P3-C3 Find Bottleneck 5 Steps
C3 Stargate $500B Beneficiary Chain Selling shovels > Panning for gold P3-C3 + P3-C4 Multi-PM
C4 Export Controls → Domestic Substitution Regulatory lag 6-24 months + substitution effect P3-C4 Multi-PM Perspective
C5 Buffett Didn't Buy NVDA Forensic The discipline of non-participation P3-C2 Buffett 5 Steps

Part 4 vs Part 3 Relationship

Part 3 Tool Used in Part 4 Chapter
P3-C1 Hedge Fund 5 Steps C1 (Druckenmiller / Coatue held, didn't trim)
P3-C2 Buffett 5 Steps C5 (NVDA fails each of the 5 steps)
P3-C3 Find Bottleneck 5 Steps C2 Samsung HBM / C3 Stargate beneficiary chain
P3-C4 Multi-PM Perspective C1 / C3 / C4 multiple angles
P3-C5 Anti-thesis C1 (4 invalidation triggers after DeepSeek all not activated)
  • Day 1: C1 DeepSeek (biggest recent event, learn short-term panic vs long-term thesis)
  • Day 2: C2 Samsung HBM (bottleneck-finding in practice)
  • Day 3: C3 Stargate (shovel-selling framework)
  • Day 4: C4 Export Controls (geopolitical lag lesson)
  • Day 5: C5 Buffett (discipline of non-participation)

After Completing Part 4, You Can

  • Take any new event (new NVDA earnings / new Stargate-like announcement / new geopolitical shock) and dissect it within 30 minutes using Part 3's 5 tools
  • Distinguish short-term price panic vs long-term thesis broken
  • Identify shovel-selling beneficiary chain vs single direct beneficiary
  • Acknowledge circle of competence boundaries, don't participate in what you shouldn't

Any ✗ → go back to the relevant chapter to review.

5 Case Selection Forensic

These 5 cases are not random. DeepSeek + Samsung + Stargate + Export Controls + Buffett Non-Participation covers the 4 major wildcards in AI investing (algorithm / supply chain / policy / geopolitics) + 1 major discipline (non-participation). If you can dissect these 5, you can apply the same approach to most new events.