A short method to scrape the list of ticker changes published by the Nasdaq. A second method to scrape the list of stocks that risk being delisted from the Nasdaq.

Classify CRSP-style delisting reasons from SEC EDGAR for quant pipelines

Audit point-in-time universe membership, security lifecycles, stable identities, and missing delisting returns before backtesting.

Free, open-source, no API key CLI that surfaces forensic risk signals from a US micro-cap's SEC filings: distress & accounting quality scores, dilution, insider activity, 8-K events, delisting & trading-suspension risk, each traced to the filing. Evidence for your own due diligence, not advice.