Us Value Investing
Get a structured Buffett-style fundamental pass on a US-listed company—ROE, debt, free cash flow, and moat—with an investment rating when you ask whether a ticker is worth holding.
Overview
us-value-investing is an agent skill for the Idea phase that systematically rates US stocks using ROE, debt, FCF, and moat analysis.
Install
npx skills add https://github.com/star23/day1global-skills --skill us-value-investingWhat is this skill?
- Four core dimensions: ROE sustainability, debt safety, free cash flow quality, and economic moat assessment.
- Outputs an investment rating plus analytical reasoning in a value-investing frame.
- Fires on casual prompts like “what do you think of stock XX?” as well as explicit fundamental-analysis requests.
- Covers long-term hold decisions, screening, and how to read financial reports.
- Buffett-style methodology for US-listed equities.
- 4 core analysis dimensions
Adoption & trust: 581 installs on skills.sh; 912 GitHub stars; 2/3 security scanners passed (skills.sh audits).
What problem does it solve?
You want a long-term view on a US stock but only get unstructured opinions instead of a value-investing checklist.
Who is it for?
Founders and solo investors researching US tickers for personal portfolios, newsletter angles, or fintech product due diligence.
Skip if: Day-trading, crypto, non-US listings, or users who need execution, tax, or regulated investment advice without their own data sources.
When should I use this skill?
User mentions US stock long-term holds, fundamentals, ROE, debt, FCF, moat, Buffett-style picking, valuations, financial reports, or asks what they think of a ticker.
What do I get? / Deliverables
You receive a structured four-dimension assessment with an investment rating and reasoning grounded in value-investing principles.
- Four-dimension fundamental assessment
- Investment rating with analytical reasoning
Recommended Skills
Journey fit
Canonical shelf is Idea → research because the skill answers “should I own this?” through fundamental discovery before capital or product bets. Research fits systematic company and financial-report interpretation rather than shipping code or running production systems.
How it compares
Structured fundamental-analysis framework, not a live screener API or brokerage trading bot.
Common Questions / FAQ
Who is us-value-investing for?
Solo builders and investors who want Buffett-style US equity analysis with explicit ROE, debt, FCF, and moat dimensions instead of generic chat takes.
When should I use us-value-investing?
Use it in Idea research when asking if a US stock is worth holding, how to read financials, whether valuation is reasonable, or for value screening— including short prompts like “analyze XX fundamentals.”
Is us-value-investing safe to install?
It is analysis guidance only and does not move money; review the Security Audits panel on this Prism page and never treat ratings as personalized financial advice.
SKILL.md
READMESKILL.md - Us Value Investing
# US Stock Value Investing Analysis Framework This skill helps you systematically analyze whether a US-listed company is worth holding long-term using Buffett-style value investing methods. Through quantitative assessment across 4 core dimensions, it provides a clear investment rating. ## Use Cases Use this skill when users ask the following types of questions: - Whether a particular US stock is worth buying/holding long-term - Help me analyze a company's fundamentals - How to interpret a company's financial report data - Whether a company has an economic moat - Help me screen stocks using value investing methods ## Analysis Framework ### 4 Core Assessment Dimensions For each dimension, use web_search to look up the target company's latest financial report data, then evaluate according to the criteria below. #### Dimension 1: ROE Sustainability (Return on Equity) **What it is**: ROE (Return on Equity) = Net Income / Shareholders' Equity. Simply put: for every $100 shareholders invest in the company, how much profit can it generate in a year. An ROE of 15% means every $100 of shareholder capital creates $15 in profit. This is the single financial metric Buffett values most — he believes a truly excellent company should be able to consistently and efficiently deploy capital. **Key point**: Don't look at just one year's ROE; check whether it has maintained a high level **consistently for 3+ years**. A single year of high ROE could be due to one-time factors (selling a building, winning a lawsuit), and only sustained high ROE demonstrates genuine competitive strength. **Search keywords**: `[Company name] ROE history` or `[Company name/ticker] return on equity 3 year` **Scoring criteria**: - 3+ consecutive years ROE > 20% → ⭐⭐⭐ Excellent (3/3 points) - 3+ consecutive years ROE > 15% → ⭐⭐ Good (2 points) - ROE 10-15% or inconsistent → ⭐ Average (1 point) - ROE < 10% or highly volatile → 0 points **Common pitfalls**: - High leverage can artificially inflate ROE. If a company has high ROE but also high debt, take it with a grain of salt. - Share buybacks reduce shareholders' equity, thereby "inflating" ROE. This needs to be evaluated alongside actual earnings growth. - Cyclical industries (e.g., oil, semiconductors) will see ROE fluctuate significantly with industry cycles; a full cycle should be examined. --- #### Dimension 2: Debt Safety (Debt-to-Equity / Debt Ratio) **What it is**: Measures how much a company borrows to fund its operations. Two commonly used metrics: - **Debt-to-Asset Ratio** = Total Liabilities / Total Assets. 50% means half of the company's assets are funded by debt. - **Debt-to-Equity Ratio** = Total Liabilities / Shareholders' Equity. 1.0 means borrowings equal shareholders' investment. Low debt means the company doesn't rely on borrowing to operate and can better withstand downturns. Highly leveraged companies are vulnerable when interest rates rise or revenue declines. **Search keywords**: `[Company name] debt to equity ratio` or `[Company name/ticker] balance sheet debt` **Scoring criteria**: - Debt-to-asset ratio < 30% → ⭐⭐⭐ Excellent (