Option symbology

Canadian and U.S. option symbols use the format MIC:ROOTyyMMddCPSTRIKE.

Example:
XMOD:BMO210618C00118000

Structure:

• MIC: Market Identification Code (e.g. XMOD for Montréal Exchange, OPRA for U.S. options)
• :: delimiter between MIC and option contract code
• ROOT: option root symbol (up to 6 characters, usually the underlying ticker)
• yyMMdd: expiration date
• C or P: Call or Put indicator
• STRIKE: strike price × 1000, left-padded to 8 digits

Examples:

• XMOD:BMO210618C00118000 → BMO call, strike $118.00
• OPRA:AAPL240621C00175000 → AAPL call, strike $175.00

Notes:

• Canadian options use MIC XMOD
• U.S. options use MIC OPRA
• The symbology format is identical across markets