# FINRA Short Interest Data by Ticker

> FINRA Short Interest Data by Ticker is a paid API for AI agents from exchangerebel.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-13).

Retrieves FINRA short interest data for a given stock ticker symbol

## Facts

- Endpoint: GET https://exchangerebel.com/toll/short/short/AAPL?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/finra-short-interest-data-by-ticker-f50dd890
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jiXF70koDU2LQKdLdJBHq

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability finra-short-interest-data-by-ticker-f50dd890
```

Example prompt: What's the current FINRA short interest for Apple (AAPL)? I want to see how many shares are being shorted and the short interest ratio.

## When to prefer this

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.

## Known failure modes

- 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

## How this service works

finra-short-interest

## Output

Returns FINRA-sourced short interest data for the requested ticker, including metrics such as shares sold short, settlement date, and potentially short interest ratio or short volume figures, as reported by FINRA.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object"
    }
   }
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/finra-short-interest-data-by-ticker-f50dd890/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from exchangerebel.com](https://www.zero.xyz/host/exchangerebel.com/llms.txt)