FINRA Short Interest Data by Ticker

Use this endpoint when you need official FINRA-sourced short interest data for US-listed equities, especially when regulatory-grade data quality is required. Prefer this over exchange-reported or third-party short interest estimates when accuracy and official sourcing matter, such as for compliance or institutional research workflows.

• Invalid or delisted ticker symbol returns empty or error response
• FINRA data may lag real-time by days depending on reporting cycle
• Non-US equities or OTC tickers may not have FINRA short interest data
• Rate limiting or payment failure if USDC balance is insufficient