Entity resolution across news, filings, and market data for the sam…

Question

Entity resolution across news, filings, and market data for the same issuer fails during mergers. What is the BEST architectural response?

Accepted Answer

Maintain a golden security master with time-variant identifiers (FIGI/ISIN/CIK maps) and effective-dated links through corporate actions. — Tickers lie over time — a time-variant security master (FIGI/ISIN/CIK) survives mergers.

Answer

Use ticker symbols as permanent primary keys forever.

Answer

Match solely on fuzzy company name equality in prompts.

Answer

Drop all historical links after each merger.

Entity resolution across news, filings, and market data for the same issuer fails during mergers. What is the BEST architectural response?

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