Understanding Daily Short Volume
FINRA's Daily Short Sale Volume Files are a critical tool for analysts tracking short-selling pressure. Unlike bi-weekly short interest reports which capture open positions, these files provide a daily snapshot of the number of shares marked 'short' on trades executed during normal market hours. This data is essential for identifying spikes in bearish sentiment on a per-ticker basis.
Data Transparency and Access
These files aggregate volume from various Trade Reporting Facilities (TRFs), the Alternative Display Facility (ADF), and the Over-the-Counter Reporting Facility (ORF). By consolidating this information, FINRA allows market participants to see the volume associated with media-reported trades. The data is typically disseminated no later than 6:00 PM ET on the trade date, providing a near-term look at market flow.
Key Takeaways
- Daily short volume represents flow, not open interest.
- Data is aggregated from TRFs, ADF, and ORF.
- Files are published daily by 6:00 PM ET.
- Essential for identifying intraday short-selling pressure.
The Bottom Line
For forensic researchers and traders, FINRA's daily short volume data is the primary source for tracking the 'flow' of short selling. Combining this with bi-weekly short interest reports provides a comprehensive view of both short-term pressure and long-term positioning.
Signal data sourced from FINRA. This post is an original analysis prepared by The Forensic Ledger from publicly available data. Not investment advice.
Not investment advice. This is original reporting and analysis prepared by The Forensic Ledger from publicly available data. Nothing here is a recommendation to buy, sell, or hold any security. Always consult the original source and a licensed professional. See our full disclaimer and source-citation policy.