stock-liquidity

# Stock Liquidity Analysis Skill 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](https://github.com/ranaroussi/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\')')"` ``` If `DEPS_MISSING`, install required packages: ```python import subprocess, sys subprocess.check_call([sys.executable, "-m", "pip", "install", "-q", "yfinance", "pandas", "numpy"]) ``` If already installed, skip and proceed. --- ## Step 2: Route to the Correct Sub-Skill Classify the user's request and jump to the matching section. If the user asks for a general liquidity assessment without specifying a particular metric, run **Sub-Skill A** (Liquidity Dashboard) which computes all key metrics together. | User Request | Route To | Examples | |---|---|---...