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Cex

Architecture

ATS system architecture

Components

ComponentDescription
GatewayMulti-protocol API (REST, FIX, WebSocket, ZAP)
Matching EnginePrice-time priority CLOB
Risk EnginePre-trade risk checks
ComplianceSanctions, PEP, jurisdiction gating
SurveillancePost-trade market abuse detection
ReportingFINRA OATS, ATS-N, CAT, MiFID II
Circuit BreakersAutomated market halts

Order Flow

  1. Client submits order via Gateway
  2. Pre-trade compliance checks (sanctions, jurisdiction, offering type)
  3. Pre-trade risk checks (position limits, concentration, rate limits)
  4. Order enters matching engine
  5. Matched trades go to settlement
  6. Post-trade surveillance analyzes execution
  7. Regulatory reports generated automatically

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