In this episode of Summed, we deliver a complete Common Stocks and Uncommon Profits summary—Philip Fisher’s classic on how to identify outstanding growth companies and hold them for years. In ~20 minutes, you’ll learn Fisher’s scuttlebutt research (talking to suppliers, customers, competitors), his famous 15-point checklist for management quality and runway, when to buy, add, or hold, and why “don’t sell too soon” is a powerful rule. Perfect for beginners and busy listeners who want a practical way to turn real-world insight into long-term investing edge.

About the author

Philip A. Fisher (1907–2004) was a pioneering growth investor whose ideas influenced legends like Warren Buffett—especially the focus on quality businesses, exceptional management, and long holding periods.

Key takeaways

• Scuttlebutt method: learn from an ecosystem—customers, vendors, competitors, ex-employees.
• 15-point Fisher checklist: size of market, competitive edge, sales organization, R&D effectiveness, profit margins, integrity/ability of management, and more.
• Buy right, hold long: concentrate in a few great businesses; let compounding work.
• Add on progress, not dips: increase when the business executes, not just when price falls.
• Don’t over-diversify: too many holdings dilute attention and results.
• When to sell: thesis broken, management deteriorates, or a clearly superior opportunity arises.

This week’s playbook

1. Build a one-page scuttlebutt plan for a company you use: list 3 customers, 2 suppliers, 1 competitor to contact or research.
2. Run Fisher’s 15-point checklist (adapted) and score your top idea 0–2 on each point.
3. Write a hold thesis with 2–3 milestones; add only if milestones are met.
4. Trim diworsification: consider consolidating small “why do I own this?” positions.

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