Market Ticker - SOAR Trading API

A prediction-ticker message is the lightweight summary of a market — enough to render a price without subscribing to the full order book.

{"type":"subscribe","data":{"targets":[{"target":"event-market","data":{"ticker":"ANTHROPIC-VALUATION-26Q3-2.1T"}}]}}

Public. No credential required.

Fields

Field	Type	Description
`type`	string	Always `"prediction-ticker"`
`eventMarketId`	string	UUID of the market
`lastPrice`	number?	Price of the most recent match, in cents
`yesBid`	number?	Best bid for YES shares, in cents, when supplied
`noBid`	number?	Best bid for NO shares, in cents, when supplied
`volume`	number?	Quantity of the trade that triggered this update, in shares; not rolling volume
`ts`	number	Unix timestamp in nanoseconds

Every field except type, eventMarketId and ts is optional. The current ticker publisher supplies lastPrice and volume, but does not supply yesBid or noBid. An omitted bid does not mean the book is empty. Use order-book snapshots for current quotes.

Example

{
  "type": "market-update",
  "data": {
    "type": "prediction-ticker",
    "eventMarketId": "9f1c2d3e-4a5b-6c7d-8e9f-0a1b2c3d4e5f",
    "lastPrice": 62,
    "volume": 40,
    "ts": 1789238400123456789
  }
}

Reading the spread

Read the best YES and NO bids from the order book. The YES ask is 100 − best NO bid. The optional ticker fields use the same bid convention when supplied. For example, with a best YES bid of 61¢ and a best NO bid of 37¢:

Quantity	Value
YES bid	61¢
YES ask	`100 − 37` = 63¢
Spread	2¢
Mid	62¢

Notes

lastPrice is the last match, which may be stale in a quiet market. It is not a current quote — use order-book snapshots for that.
Prices are integer cents, 1–99, and read as implied probability: 62¢ means the market puts the outcome at roughly 62%.
Ticker messages are published for trades. To also see the individual matches that moved the price, subscribe to Public Trades on the same target — one subscribe gets you both.