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Functional Delta: YU14-listed-equity-options (vs YU13-limit-order-book)

Everything in YU13 is carried forward unchanged: the crossing book, price-time priority, grid/band admission, market-order semantics, egress ack classes, and snapshot completeness discipline all apply verbatim to option contracts.

Added​

  • FR-LEO01; option contracts are securities identified by unpadded OCC symbols; they trade through the inherited paths with no matching-engine change.
  • FR-LEO02; deterministic multiplier derivation at symbol registration (option → 100, other → 1), identical on every member and replay.
  • FR-LEO03; all risk-gate notional math (reserve, market trade, executed exposure, concentration projection) multiplies by the contract multiplier; overflow rejects ORDER_NOTIONAL.
  • FR-LEO04; the multiplier is cluster state: format-3 snapshot security records carry it, and restore fails closed on multiplier < 1.
  • FR-LEO05; strike/expiry/call-put/underlying and counterparty/netting-set never enter the consensus log; they are reference data (derived and joined respectively).
  • FR-LEO06; instrument currency (USD) and derived position notional (quantity x price x multiplier) exposed at the reference-data layer.
  • FR-LEO07; the SBE symbol-registration ticker field carries at least 19 ASCII characters.

Changed​

  • Snapshot format identifier 2 → 3: the security record gains the multiplier column; a format-2 header fails closed on load (the inherited unknown-format rule, applied to the new format).

Removed​

  • Nothing.