# Stock Split History by Ticker

> Stock Split History by Ticker 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 the complete stock split history for a US-listed equity, including execution dates and split ratios with price-adjustment factors.

## Facts

- Endpoint: GET https://marketdata.use.x402atlas.com/splits
- Price: $0.015/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stock-split-history-by-ticker-e413d435
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_BNVJjJ27OqrwsjiYdeA6c

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 stock-split-history-by-ticker-e413d435
```

Example prompt: Can you pull up the full stock split history for NVIDIA (NVDA), including all the execution dates and split ratios, so I can adjust historical price data correctly?

## When to prefer this

Use this endpoint when you need historical corporate-action split data for a US equity — especially when adjusting raw historical price series for split events, backtesting strategies, or calculating split-adjusted returns. Prefer this over general market data endpoints when split ratios and exact execution dates are the primary need.

## Known failure modes

- Invalid or unrecognized ticker symbol returns an error or empty result
- Ticker is valid but has no recorded splits — returns empty list
- limit parameter out of allowed range (max 5000) may return an error or be clamped
- Non-US tickers may not be supported and return no data or an error
- Service unavailable returns a non-200 HTTP response with error message

## How this service works

Stock split history for a US stock — execution dates and split ratios with price-adjustment factors.

## Output

A list of stock split events for the requested ticker, each containing the execution date, the split ratio (e.g. 4:1), and the corresponding price-adjustment factor used to normalize historical prices.

## 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",
     "required": [
      "ticker"
     ],
     "properties": {
      "limit": {
       "type": "integer",
       "maximum": 50000,
       "minimum": 1,
       "description": "Max results returned"
      },
      "ticker": {
       "type": "string",
       "description": "US stock ticker, e.g. AAPL"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "queried_at",
      "ticker",
      "count",
      "splits"
     ],
     "properties": {
      "count": {
       "type": "integer",
       "description": "Number of splits returned."
      },
      "splits": {
       "type": "array",
       "items": {
        "type": "object",
        "required": [
         "split_from",
         "split_to"
        ],
        "properties": {
         "split_to": {
          "type": "number"
         },
         "split_from": {
          "type": "number"
         },
         "execution_date": {
          "type": "string",
          "format": "date"
         },
         "adjustment_type": {
          "type": "string",
          "description": "e.g. forward_split, reverse_split."
         }
        }
       },
       "description": "Stock split history, most recent first."
      },
      "ticker": {
       "type": "string",
       "description": "Echo of the requested ticker."
      },
      "queried_at": {
       "type": "string",
       "format": "date-time",
       "description": "UTC timestamp when this bridge queried the upstream."
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "count": 1,
  "splits": [
   {
    "split_to": 4,
    "split_from": 1,
    "execution_date": "2020-08-31",
    "adjustment_type": "forward_split"
   }
  ],
  "ticker": "AAPL",
  "queried_at": "2026-07-06T12:00:00Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stock-split-history-by-ticker-e413d435/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from marketdata.use.x402atlas.com](https://www.zero.xyz/host/marketdata.use.x402atlas.com/llms.txt)