Independent control plane / Architecture v0
Risk begins
with a boundary.
PRT evaluates portfolio targets, proposed orders, actual positions and system state. It publishes an auditable decision. It never optimizes the portfolio or sends an order.
Inspect the mandate ↓PCPT / PRT / PET
FAIL CLOSED
FAIL CLOSED
01 / Scientific control
Observe.
Evaluate.
Decide.
All deterministic policies pass for the requested operating mode.
The artifact may proceed only after explicit, machine-readable conditions are met.
The request fails one or more policy limits and must be resubmitted.
An active Kill Switch or critical system state overrides every approval.
02 / Deterministic policy
Six rules before complexity.
PRT starts with rules that can be tested, replayed and explained. No black-box risk score can bypass a failed hard gate.
- 01Cash sufficiencyRequired cash cannot exceed available cash.
- 02Position concentrationSingle-security weight stays under its configured maximum.
- 03TradabilityUntradable securities are rejected before execution.
- 04Turnover limitDaily turnover remains within the approved operating envelope.
- 05Loss boundaryMaximum-loss breach pauses the strategy.
- 06Live lockLive trading requires an explicit, expiring Human unlock.
Prevent invalid intent.
Cash, concentration, tradability, abnormal price, order value and turnover.
Control active execution.
Fill anomalies, price deviation, duplicate orders, connectivity, loss state and Kill Switch.
Reconcile and learn.
Positions, exposure, PnL attribution, costs, drawdown and immutable incident evidence.
04 / System boundary
Risk crosses the production line.
PRT consumes monitoring evidence from PAAT, PCPT and PET. It does not replace each Team's local monitor.