KALSHI Mechanics
Series Ticker
The event_ticker that groups all related child markets under one recurring Kalshi series.
Detailed explanation
A series ticker designates a Kalshi event_ticker that links multiple child markets created from a single recurring event template (for example, CPI releases or weekly/NFP rounds). Each child market (YES/NO) inherits this series label, while the individual market tickers encode the specific bracket or value. The series concept helps traders see and compare all related contracts that share the same release schedule or bracket structure, and supports combinatorial or cross-child analysis within the same event. Kalshi enforces that the sum of YES prices across child markets under a series approaches the $1.00 fair value target as event expectations diverge.
Worked example
Example: The CPI series CPIYY-26MAR spawns child markets like CPIYY-26MAR-T2.5 YES and CPIYY-26MAR-T2.5 NO. If YES is 42¢ and NO is 56¢, the series has a combined edge of 2¢ (since 42¢ + 56¢ = 98¢).
FAQ
- What is a series ticker used for?
- It groups related child markets under a single recurring event template, making it easier to evaluate the full set of outcomes and their prices.
- How does a series ticker relate to edge/arbitrage?
- If the sum of the best YES prices across the child markets under the same series is less than $1.00, you can buy the complete set to lock in a risk-defined spread.
- Where can I find or filter by series tickers in the API?
- Series tickers are exposed as event tickers in the markets endpoint; use the event_ticker filter to view all child markets in that series.
See Series Ticker on a live Kalshi market
KalshiArb scans every open Kalshi market for arbitrage edges where YES + NO < $1.00. Plug in your Kalshi API key and start receiving alerts in under 5 minutes.
Related terms
- Yes ContractA YES contract is the binary Kalshi market side that pays $1 if the event resolves true, $0 otherwise.
- No ContractThe NO contract is the opposite side of a binary Kalshi market, paying $1 if the event does not occur.
- Best BidThe highest price investors are willing to pay for a YES or NO side of a Kalshi market.
- Best AskThe lowest price sellers are willing to accept for a contract side (YES/NO) on the current Kalshi order book.
- Tick SizeTick size is the minimum price increment by which Kalshi contract prices can move (1 cent).
- Settlement PriceThe final per-contract value used to determine payouts at resolution (usually $1 for a winning side, $0 for the losing side).