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Module mic

regit_identifiers

Module mic 

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MIC — Market Identifier Code (ISO 10383).

A MIC names a market — an exchange, a multilateral trading facility, or another trading venue — rather than a security. It is exactly 4 characters with no internal segmentation:

  X N A S
  │ └─┴─┘
  │   │
  │   └─── market suffix  [1..4]   three characters [A-Z0-9]
  └─────── leading letter [0]      one upper-case letter [A-Z]
  • The leading character is always an upper-case ASCII letter.
  • The remaining three characters are each an upper-case letter or a digit.
  • A MIC carries no check digit: there is nothing to recompute. The four characters are either well-formed or they are not.

ISO 10383 also distinguishes an operating MIC, which identifies a market operator, from a segment MIC, which names a sub-market and references its operating MIC.

Structural validity is necessary but not sufficient: ZZZZ is well-formed yet identifies no real market. True validity is membership in the published ISO 10383 registry. With the default mic-registry feature enabled this crate embeds a snapshot of that registry; Mic::lookup, Mic::is_registered, and Mic::parse_registered consult it, and the MicEntry / MicStatus types are re-exported here.

Mic::parse enforces the structural rules; Mic::parse_registered additionally requires that the code be present in the embedded registry.

§References

  • ISO 10383, Securities and related financial instruments — Codes for exchanges and market identification (MIC).

Re-exports§

pub use crate::mic_registry::MicEntry;
pub use crate::mic_registry::MicStatus;

Structs§

Mic
A validated Market Identifier Code (ISO 10383).