FINRA Short Interest Lookup

x402

FINRA Short Interest Lookup is a paid API for AI agents from marketdata.use.x402atlas.com, paid per call via x402, $0.015/call, status unknown (last checked 2026-09-15).

Returns FINRA short interest data for a US stock ticker, including shares sold short, days-to-cover ratio, and average volume as a short-squeeze sentiment signal.

Price / call$0.015

Seller volume →—

Success—

StatusUnknown

How this service works

FINRA short interest for a US stock — shares sold short, days-to-cover and average volume, a short-squeeze sentiment signal.

Output

Returns FINRA-sourced short interest data for the requested US stock ticker, including the number of shares currently sold short, the days-to-cover ratio (short interest divided by average daily volume), and average trading volume — providing a quantitative short-squeeze sentiment signal.

Example use cases

Example prompt

“What's the current FINRA short interest for GameStop (GME) — I want to know the shares sold short, days-to-cover, and whether it looks like a short squeeze candidate?”

Technical details

Endpoint

GEThttps://marketdata.use.x402atlas.com/short-interest

When to prefer

Use this endpoint when you need official FINRA-sourced short interest metrics for a specific US-listed stock, particularly for short-squeeze analysis, sentiment gauging, or fundamental research. Prefer this over FINRA daily short-sale volume endpoints when you need cumulative short interest position data (shares outstanding short) rather than single-day short volume. Best for equities-focused agents doing market research, risk assessment, or trading signal generation.

Side effects

Invalid or unrecognized ticker symbol returns an error or empty result
Non-US ticker symbols may not be covered by FINRA data
Limit parameter exceeds maximum of 50000 returns a validation error
Service unavailable or payment failure returns a 402 or 5xx error
Stale data if FINRA has not yet published the latest reporting period

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "count": 1,
    "ticker": "A",
    "records": [
      {
        "days_to_cover": 1.67,
        "short_interest": 3906231,
        "settlement_date": "2025-03-14",
        "avg_daily_volume": 2340158
      }
    ],
    "queried_at": "2026-07-06T12:00:00Z"
  }
}

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How this service works

FINRA short interest for a US stock — shares sold short, days-to-cover and average volume, a short-squeeze sentiment signal.

Output

Technical details

Endpoint

GEThttps://marketdata.use.x402atlas.com/short-interest

When to prefer

Side effects

Invalid or unrecognized ticker symbol returns an error or empty result
Non-US ticker symbols may not be covered by FINRA data
Limit parameter exceeds maximum of 50000 returns a validation error
Service unavailable or payment failure returns a 402 or 5xx error
Stale data if FINRA has not yet published the latest reporting period

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "count": 1,
    "ticker": "A",
    "records": [
      {
        "days_to_cover": 1.67,
        "short_interest": 3906231,
        "settlement_date": "2025-03-14",
        "avg_daily_volume": 2340158
      }
    ],
    "queried_at": "2026-07-06T12:00:00Z"
  }
}