buffett-financial-analysislisted
Install: claude install-skill socreative/my-claude
# Buffett Financial Statement Analysis
This skill applies Warren Buffett's framework for identifying companies with a **durable competitive advantage (DCA)** — the single most important factor in his investment approach. The goal is not to find cheap stocks, but to find exceptional businesses worth owning for 10–20+ years.
## Core Investment Philosophy
Buffett divides businesses into two groups:
1. **Companies with a durable competitive advantage** — sell a unique product/service or are the low-cost buyer/seller of a product the public consistently needs. Their earnings are consistent and grow over time.
2. **Mediocre companies** — compete in fiercely competitive markets, suffer boom/bust cycles, require constant capital reinvestment, and rarely create long-term shareholder wealth.
**What creates a DCA:**
- Selling a unique product (Coca-Cola, Wrigley, Hershey, Pepsi)
- Selling a unique service (Moody's, American Express, H&R Block)
- Being the low-cost buyer/seller of a needed product (Walmart, Costco, Burlington Northern)
**The key word is "durability"** — look for *consistency* across 5–10 years of data, not a single good year.
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## Step-by-Step Analysis Framework
When analyzing a company, work through all three financial statements in order. Request 10 years of data where possible — single-year snapshots are nearly worthless for this analysis.
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### PART 1: INCOME STATEMENT ANALYSIS
#### 1. Gross Profit Margin
**Formula:** Gross Profit ÷ Total Revenue
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