Guy Spier
Value Investor's Checklist
Guy Spier's approach focuses on avoiding mistakes rather than finding clever opportunities. Inspired by Atul Gawande's Checklist Manifesto, Spier developed a structured checklist to counteract behavioral biases and emotional decision-making. His criteria emphasize asking the right questions before buying -- particularly identifying reasons NOT to invest -- creating a framework that is primarily qualitative and risk-focused.
Valuation Method
Conservative Owner Earnings
Owner earnings DCF modeled after Buffett's approach but with extra conservatism -- a 12% discount rate (vs Buffett's 9%), growth capped at 10%, and 2.5% terminal growth. Reflects Spier's philosophy of only buying with a wide margin of safety.
Checklist (8 Criteria)
| # | Criterion | Metric | Threshold | Data Source |
|---|---|---|---|---|
| 1 | Sufficient Discount to Intrinsic Value | Margin of Safety | Buying at meaningful discount | DCF, asset-based, or relative valuation |
| 2 | Business Understanding | Comprehension Level | Deep understanding of the business | Qualitative assessment |
| 3 | 5-Year Hold Comfort | Ownership Conviction | Comfortable owning if market closed for 5 years | Qualitative: business durability assessment |
| 4 | Management Integrity | Management Quality | Honest and competent management | Qualitative: track record, compensation, insider buying |
| 5 | Declining Industry (Avoid) | Industry Trajectory | NOT in a declining industry | Qualitative: industry analysis |
| 6 | Customer/Product Concentration (Avoid) | Revenue Concentration | NOT too dependent on one customer/product | 10-K: revenue breakdown, customer disclosures |
| 7 | Technology Disruption Risk (Avoid) | Disruption Vulnerability | Technology change unlikely to destroy business | Qualitative: competitive dynamics, industry trends |
| 8 | Insider Ownership | Insider Ownership | Meaningful insider ownership | Proxy filings: insider ownership percentage |
Intrinsic Value Method
Spier Owner Earnings DCF
Sum of [(OpCF + Interest - CapEx) * (1+g)^t / (1+r)^t] for t=1..10 + Terminal Value / (1+r)^10, where r = 12%, g capped at 10%Owner earnings DCF modeled after Buffett's approach but with extra conservatism -- a 12% discount rate, growth capped at 10%, and 2.5% terminal growth. Reflects Spier's philosophy of only buying with a wide margin of safety.
Verdict Logic
PASS if >= 5 of 8 criteria met (quantitative criterion 1 must pass AND majority overall). Primarily qualitative -- behavioral/risk-avoidance checklist. Focus is on identifying reasons NOT to invest (criteria 5-7 are avoidance criteria). Qualitative criteria auto-pass for screening.
What Would Guy Spier Buy Today?
Sources
The Education of a Value Investor
2014Guy Spier
A memoir and practical guide describing Spier's evolution as a value investor, including the development of his investment checklist and rules for creating a rational decision-making environment.
The Checklist Manifesto
2009Atul Gawande
While not an investing book, Gawande's work on the power of checklists in surgery and aviation directly inspired Spier's approach to systematizing investment decisions and reducing errors.