System Flows
These views describe the same platform at different levels: chronological calls, component collaboration, end-to-end activity, and state transitions.
Sequence diagram

The sequence begins with authentication and instrument selection, then fans out through orchestration to data, prediction, and profile dependencies before returning one consolidated result.
Collaboration diagram

The collaboration view emphasizes ownership and message direction. Services communicate through APIs; they do not read one another's databases.
Activity diagram

The activity flow includes user decisions, platform validation, parallel evidence collection, response composition, and error paths. Independent branches allow market data and prediction work to progress without serializing every remote call.
State transitions

The state model covers authentication, navigation, analysis, portfolio operations, and service outcomes. Explicit loading, success, empty, and error states keep both frontend behavior and backend workflow handling predictable.