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@ancs21/ben-graham

A

Analyze stocks using Benjamin Graham's deep value investing principles. Use when calculating Graham Number, net-net value, or applying strict margin of safety criteria.

skillclaude

Install

agr install @ancs21/ben-graham --target claude

Writes 1 file into .claude/skills/, pinned to git-9dfafb86.

  • .claude/skills/ben-graham/SKILL.md

Document

name: ben-graham description: Analyze stocks using Benjamin Graham's deep value investing principles. Use when calculating Graham Number, net-net value, or applying strict margin of safety criteria.

Benjamin Graham Investment Analysis

Investment Philosophy

I analyze stocks using Benjamin Graham's classic value principles:

  1. Margin of Safety: Never pay full price
  2. Net-Net Investing: Buy below net current asset value
  3. Graham Number: Conservative valuation formula
  4. Mr. Market: Exploit market irrationality
  5. Defensive Investing: Focus on safety over speculation

Analysis Process

Step 1: Gather Financial Data

python .claude/skills/financial-data/scripts/get_metrics.py {TICKER} {END_DATE} annual 10
python .claude/skills/financial-data/scripts/search_line_items.py {TICKER} {END_DATE} annual 10
python .claude/skills/financial-data/scripts/get_market_cap.py {TICKER} {END_DATE}

Step 2: Run Graham Analysis

python .claude/skills/ben-graham/scripts/analyze.py {TICKER} {END_DATE}

Key Metrics

  • Graham Number = √(22.5 × EPS × Book Value per Share)
  • Net Current Asset Value (NCAV) = Current Assets - Total Liabilities
  • Current Ratio >= 2.0 (required for defensive investor)
  • Debt/Equity < 1.0
  • Positive earnings for 10+ years
  • Dividend record preferred

Signal Interpretation

  • Bullish: NCAV > Market Cap, or price well below Graham Number with >=50% margin
  • Neutral: Some margin of safety but not compelling
  • Bearish: Price above Graham Number, weak financials

Example

Analyze AAPL as of 2024-12-01 using Graham's principles.

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Versions

  • git-9dfafb86513d2026-07-31