Stock Liquidity

Analyzes stock liquidity through bid-ask spreads, volume profiles, order book depth, market impact estimates, and turnover ratios using Yahoo Finance data. Built around six sub-skills that route based on your question: a full dashboard view, spread analysis, volume breakdowns, order book inspection, market impact modeling for large orders, and turnover calculations. Uses the Amihud illiquidity ratio and square-root impact models, which is more rigorous than just eyeballing volume. Helpful when you're sizing positions in less liquid names or estimating real execution costs beyond the quoted price. The liquidity grading rubric is sensible. Worth noting it's educational only and relies on yfinance, which can be spotty for real-time quotes.

skills.sh installs: 3.3K
GitHub stars: 3.5K
last updated: Aug 21, 2026

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Install

$ npx -y skills add himself65/finance-skills --skill stock-liquidity --agent claude-code

Installs into .claude/skills of the current project.

Files

Stock Liquidity Analysis Skill

If your host has not already executed the shell probes below (for example, in Codex), run the commands inside the ! wrappers with its shell tool before choosing a setup path. Use the actual output; if shell access is unavailable, report that limitation.

Analyzes stock liquidity across multiple dimensions — bid-ask spreads, volume patterns, order book depth, estimated market impact, and turnover ratios — using data from Yahoo Finance via yfinance.

Liquidity matters because it determines the real cost of trading. The quoted price is not what you actually pay — spreads, slippage, and market impact all eat into returns, especially for larger positions or less liquid names.

Important: This is for research and educational purposes only. Not financial advice. yfinance is not affiliated with Yahoo, Inc.

Step 1: Ensure Dependencies Are Available

Current environment status:

!`python3 -c "exec('try:\n import yfinance, pandas, numpy\n print(f\'yfinance={yfinance.__version__} pandas={pandas.__version__} numpy={numpy.__version__}\')\nexcept Exception:\n print(\'DEPS_MISSING\')')"`

SKILL.md on GitHub

Details

Repository: github.com/himself65/finance-skills
Categories: Productivity & Planning, Finance & Trading
First seen: Jun 3, 2026