crsp-lseg-splice

Contents

• The Problem
• Splice Enforcement
• Symbology Enforcement
• Measured Coverage
• The Pipeline
• Additional Resources

The Problem

CRSP ships annually. The CIZ daily file stops at the last December close and does not error when you query past it — it returns a short panel. LSEG is current to T-1 but is keyed on RIC, not PERMNO, so the join runs through CUSIP.

Verified 2026-07-28 on WRDS PostgreSQL: