{"series":{"additional_prohibitions":["Persons who are employed by any of the Source Agencies are not permitted to trade on the Contract.","Persons who hold any material, non-public information on the Underlying are not permitted to trade on the Contract."],"categories":["Financials"],"category":"Financials","contract_terms_url":"https://assets.kalshi.com/contract_terms/INX.pdf","contract_url":"https://assets.kalshi.com/regulatory/product-certifications/INX.pdf","exchange_index":0,"fee_multiplier":1,"fee_type":"quadratic","frequency":"daily","last_updated_ts":"2026-10-07T06:30:21.386293Z","settlement_sources":[{"name":"For example, Google Finance","url":"https://www.google.com/finance/quote/.INX:INDEXSP?hl=en"}],"tags":["Indices","Markets","S&P 500","Stock Market"],"ticker":"KXINX","title":"S&P 500 range"}}