feat: Complete Phase 2 - Enhanced Risk & Sizing
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Implementation (7 files, ~2,640 lines): - AdvancedRiskManager with Tier 2-3 risk controls * Weekly rolling loss limits (7-day window, Monday rollover) * Trailing drawdown protection from peak equity * Cross-strategy exposure limits by symbol * Correlation-based position limits * Time-based trading windows * Risk mode system (Normal/Aggressive/Conservative) * Cooldown periods after violations - Optimal-f position sizing (Ralph Vince method) * Historical trade analysis * Risk of ruin calculation * Drawdown probability estimation * Dynamic leverage optimization - Volatility-adjusted position sizing * ATR-based sizing with regime detection * Standard deviation sizing * Volatility regimes (Low/Normal/High) * Dynamic size adjustment based on market conditions - OrderStateMachine for formal state management * State transition validation * State history tracking * Event logging for auditability Testing (90+ tests, >85% coverage): - 25+ advanced risk management tests - 47+ position sizing tests (optimal-f, volatility) - 18+ enhanced OMS tests - Integration tests for full flow validation - Performance benchmarks (all targets met) Documentation (140KB, ~5,500 lines): - Complete API reference (21KB) - Architecture overview (26KB) - Deployment guide (12KB) - Quick start guide (3.5KB) - Phase 2 completion report (14KB) - Documentation index Quality Metrics: - Zero new compiler warnings - 100% C# 5.0 compliance - Thread-safe with proper locking patterns - Full XML documentation coverage - No breaking changes to Phase 1 interfaces - All Phase 1 tests still passing (34 tests) Performance: - Risk validation: <3ms (target <5ms) ✅ - Position sizing: <2ms (target <3ms) ✅ - State transitions: <0.5ms (target <1ms) ✅ Phase 2 Status: ✅ COMPLETE Time: ~3 hours (vs 10-12 hours estimated manual) Ready for: Phase 3 (Market Microstructure & Execution)
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# File Modification Boundaries
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# File Modification Boundaries - Phase 2
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You are implementing the OMS (Order Management System) for the NT8 SDK project.
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You are implementing **Phase 2: Enhanced Risk & Sizing** for the NT8 SDK project.
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## Allowed Modifications
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You MAY create and modify files in these directories ONLY:
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### Core OMS Implementation
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- `src/NT8.Core/OMS/*.cs` - All OMS implementation files
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- `src/NT8.Core/OMS/**/*.cs` - Any subdirectories under OMS
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### Phase 2 Implementation
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- `src/NT8.Core/Risk/**/*.cs` - All risk management files
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- `src/NT8.Core/Sizing/**/*.cs` - All sizing files
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- `src/NT8.Core/OMS/OrderStateMachine.cs` - NEW file only
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### Limited Modifications (Add Only, Don't Change)
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- `src/NT8.Core/Risk/RiskConfig.cs` - ADD properties only (don't modify existing)
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- `src/NT8.Core/OMS/OrderModels.cs` - ADD records only (don't modify existing)
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- `src/NT8.Core/OMS/BasicOrderManager.cs` - ADD methods only (don't modify existing)
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### Testing
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- `tests/NT8.Core.Tests/OMS/*.cs` - OMS unit tests
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- `tests/NT8.Core.Tests/OMS/**/*.cs` - OMS test subdirectories
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- `tests/NT8.Core.Tests/Mocks/*.cs` - Mock implementations (MockNT8OrderAdapter)
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- `tests/NT8.Core.Tests/Risk/**/*.cs` - Risk tests
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- `tests/NT8.Core.Tests/Sizing/**/*.cs` - Sizing tests
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- `tests/NT8.Core.Tests/OMS/EnhancedOMSTests.cs` - NEW file
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- `tests/NT8.Integration.Tests/RiskSizingIntegrationTests.cs` - NEW file
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- `tests/NT8.Performance.Tests/Phase2PerformanceTests.cs` - NEW file
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## Strictly Forbidden Modifications
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You MUST NOT modify any existing files in these locations:
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You MUST NOT modify:
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### Core Interfaces and Models
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- `src/NT8.Core/Common/**` - Existing interfaces and base models
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- `src/NT8.Core/Risk/**` - Risk management system (completed)
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- `src/NT8.Core/Sizing/**` - Position sizing system (completed)
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- `src/NT8.Core/Logging/**` - Logging infrastructure
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### Interfaces (Breaking Changes)
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- `src/NT8.Core/Common/Interfaces/IStrategy.cs`
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- `src/NT8.Core/Risk/IRiskManager.cs` - Interface itself
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- `src/NT8.Core/Sizing/IPositionSizer.cs` - Interface itself
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- `src/NT8.Core/OMS/IOrderManager.cs` - Interface itself
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- `src/NT8.Core/OMS/INT8OrderAdapter.cs` - Interface itself
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### Phase 1 Implementations
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- `src/NT8.Core/Risk/BasicRiskManager.cs` - Keep as-is
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- `src/NT8.Core/Sizing/BasicPositionSizer.cs` - Keep as-is
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- `src/NT8.Core/OMS/BasicOrderManager.cs` - ADD only, don't modify existing methods
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### Common Models
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- `src/NT8.Core/Common/Models/**` - Don't modify existing models
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### Build Configuration
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- `Directory.Build.props` - Global build properties
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- `*.csproj` files - Project files (unless adding new files to OMS project)
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- `Directory.Build.props`
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- `*.csproj` files (unless adding new files)
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- `.gitignore`
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### Documentation (Read-Only)
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- `nt8_phasing_plan.md`
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- `nt8_dev_spec.md`
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- `NT8_Integration_Guidelines_for_AI_Agents.md`
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- `AI_Agent_Workflow_and_Code_Templates.md`
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### NT8 Adapters
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- `src/NT8.Adapters/**` - NT8 integration (future phase)
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- Phase 1 guides
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## New File Creation Rules
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### When creating new files:
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1. Use proper namespace: `NT8.Core.OMS` for implementation, `NT8.Core.Tests.OMS` for tests
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1. Use proper namespace:
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- `NT8.Core.Risk` for risk files
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- `NT8.Core.Sizing` for sizing files
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- `NT8.Core.OMS` for OMS files
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- `NT8.Core.Tests.Risk` for risk tests
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- `NT8.Core.Tests.Sizing` for sizing tests
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2. Include XML documentation on all public members
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3. Follow existing file naming patterns (PascalCase, descriptive names)
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3. Follow existing file naming patterns (PascalCase)
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4. Add to appropriate project file if needed
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### File naming examples:
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✅ `BasicOrderManager.cs` - Implementation class
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✅ `OrderModels.cs` - Model classes
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✅ `IOrderManager.cs` - Interface
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✅ `BasicOrderManagerTests.cs` - Test class
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✅ `MockNT8OrderAdapter.cs` - Mock for testing
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✅ `AdvancedRiskManager.cs` - Implementation class
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✅ `AdvancedRiskModels.cs` - Model classes
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✅ `OptimalFCalculator.cs` - Calculator utility
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✅ `EnhancedPositionSizer.cs` - Sizer implementation
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✅ `AdvancedRiskManagerTests.cs` - Test class
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## Modification Patterns
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### ✅ CORRECT: Adding to existing file
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```csharp
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// In RiskConfig.cs - ADD new properties
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public record RiskConfig(
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// Phase 1 properties - DON'T TOUCH
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double DailyLossLimit,
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double MaxTradeRisk,
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int MaxOpenPositions,
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bool EmergencyFlattenEnabled,
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// Phase 2 properties - ADD THESE
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double? WeeklyLossLimit = null,
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double? TrailingDrawdownLimit = null,
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int? MaxCrossStrategyExposure = null
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);
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```
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### ❌ WRONG: Modifying existing
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```csharp
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// DON'T change existing property types or remove them
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public record RiskConfig(
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int DailyLossLimit, // ❌ Changed type from double
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// ❌ Removed MaxTradeRisk property
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);
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```
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### ✅ CORRECT: Adding methods to BasicOrderManager
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```csharp
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public class BasicOrderManager : IOrderManager
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{
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// Existing methods - DON'T TOUCH
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public async Task<string> SubmitOrderAsync(...) { }
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// NEW Phase 2 methods - ADD THESE
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public async Task<bool> HandlePartialFillAsync(...) { }
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public async Task<bool> RetryOrderAsync(...) { }
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}
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```
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## Verification
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Before any file operation, ask yourself:
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1. Is this file in an allowed directory?
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2. Am I modifying an existing Core interface? (FORBIDDEN)
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3. Am I creating a new file in the correct location?
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2. Am I modifying an existing interface signature? (FORBIDDEN)
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3. Am I changing existing Phase 1 behavior? (FORBIDDEN)
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4. Am I only ADDING to existing files? (ALLOWED)
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If unsure, DO NOT proceed - ask for clarification first.
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## Phase 2 Specific Rules
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### Risk Files
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- ✅ Create AdvancedRiskManager.cs (NEW)
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- ✅ Create AdvancedRiskModels.cs (NEW)
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- ✅ Extend RiskConfig.cs (ADD ONLY)
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### Sizing Files
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- ✅ Create OptimalFCalculator.cs (NEW)
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- ✅ Create VolatilityAdjustedSizer.cs (NEW)
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- ✅ Create EnhancedPositionSizer.cs (NEW)
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- ✅ Create SizingModels.cs (NEW)
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### OMS Files
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- ✅ Create OrderStateMachine.cs (NEW)
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- ✅ Extend OrderModels.cs (ADD ONLY)
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- ✅ Extend BasicOrderManager.cs (ADD METHODS ONLY)
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### Test Files
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- ✅ Create all new test files
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- ✅ Don't modify existing test files unless fixing bugs
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@@ -1,4 +1,4 @@
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# Project Context
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# Project Context - Phase 2
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You are working on the **NT8 SDK** - an institutional-grade trading SDK for NinjaTrader 8.
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@@ -10,92 +10,105 @@ This is production trading software used for automated futures trading (ES, NQ,
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- Performance requirements are strict (<200ms latency)
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- This is institutional-grade, not hobbyist code
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## Current Phase: Phase 1 - Core Trading Loop
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## Current Phase: Phase 2 - Enhanced Risk & Sizing
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You are implementing the **OMS (Order Management System)** component.
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You are implementing **advanced risk management and intelligent position sizing**.
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### OMS Responsibilities
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- Manage complete order lifecycle (Pending → Working → Filled/Cancelled)
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- Thread-safe order tracking
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- State machine enforcement
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- Integration with NT8 platform
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- Position flattening capability
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### Phase 2 Responsibilities
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- Advanced risk rules (Tiers 2-3)
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- Optimal-f position sizing (Ralph Vince method)
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- Volatility-adjusted sizing
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- Enhanced OMS features (partial fills, retry, reconciliation)
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### What OMS Does NOT Do (Other Components Handle)
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- Risk validation (IRiskManager handles this)
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- Position sizing (IPositionSizer handles this)
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- Strategy logic (IStrategy handles this)
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- Direct NT8 calls (NT8Adapter handles this)
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### What Phase 2 Does NOT Do (Other Components Handle)
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- Basic risk validation (BasicRiskManager handles this - Phase 1)
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- Strategy logic (IStrategy handles this - Phase 1)
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- Order lifecycle management (BasicOrderManager handles this - Phase 1)
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- Direct NT8 calls (NT8Adapter handles this - Future)
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## Architecture Overview
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```
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Strategy Layer (IStrategy)
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Strategy Layer (IStrategy) - Phase 1 ✅
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↓ generates StrategyIntent
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Risk Layer (IRiskManager)
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├─ BasicRiskManager - Phase 1 ✅
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└─ AdvancedRiskManager - Phase 2 ← YOU ARE HERE
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↓ validates and produces RiskDecision
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Sizing Layer (IPositionSizer)
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├─ BasicPositionSizer - Phase 1 ✅
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└─ EnhancedPositionSizer - Phase 2 ← YOU ARE HERE
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↓ calculates contracts and produces SizingResult
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OMS Layer (IOrderManager) ← YOU ARE HERE
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OMS Layer (IOrderManager) - Phase 1 ✅ (enhancing in Phase 2)
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↓ manages order lifecycle
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NT8 Adapter Layer (INT8OrderAdapter)
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NT8 Adapter Layer (INT8OrderAdapter) - Future
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↓ bridges to NinjaTrader 8
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NinjaTrader 8 Platform
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```
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## Your Current Task
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Implement the **Basic OMS** with these deliverables:
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Implement **Enhanced Risk & Sizing** with these deliverables:
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### Phase 1 Deliverables
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1. ✅ `OrderModels.cs` - Order request/status models and enums
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2. ✅ `IOrderManager.cs` - Core interface definition
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3. ✅ `INT8OrderAdapter.cs` - Adapter interface
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4. ✅ `BasicOrderManager.cs` - Implementation with state machine
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5. ✅ `MockNT8OrderAdapter.cs` - Mock for testing
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6. ✅ Unit tests - Comprehensive test coverage (>80%)
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### Phase 2 Deliverables
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**Risk Management:**
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1. ✅ `AdvancedRiskModels.cs` - Weekly tracking, drawdown, exposure
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2. ✅ `AdvancedRiskManager.cs` - All Tier 2-3 risk rules
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3. ✅ Update `RiskConfig.cs` - Add new configuration properties
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**Position Sizing:**
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4. ✅ `SizingModels.cs` - Optimal-f, volatility models
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5. ✅ `OptimalFCalculator.cs` - Ralph Vince algorithm
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6. ✅ `VolatilityAdjustedSizer.cs` - ATR/StdDev sizing
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7. ✅ `EnhancedPositionSizer.cs` - All advanced sizing methods
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**Enhanced OMS:**
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8. ✅ `OrderStateMachine.cs` - Formal state machine
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9. ✅ Update `OrderModels.cs` - Add partial fill models
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10. ✅ Update `BasicOrderManager.cs` - Add enhanced methods
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**Testing:**
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11. ✅ Comprehensive unit tests (90+ tests total)
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12. ✅ Integration tests (risk + sizing flow)
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13. ✅ Performance benchmarks (<5ms risk, <3ms sizing)
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### Out of Scope (Future Phases)
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- ❌ Partial fill aggregation (Phase 2)
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- ❌ Retry logic (Phase 2)
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- ❌ Position reconciliation (Phase 2)
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- ❌ Market microstructure (Phase 3)
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- ❌ Advanced order types (Phase 3)
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- ❌ Smart order routing (Phase 3)
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- ❌ Confluence scoring (Phase 4)
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- ❌ ML-based features (Phase 6)
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## Key Design Principles
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### 1. Risk-First Architecture
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ALL trading operations flow through IRiskManager before OMS.
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ALL trading operations flow through risk management before execution.
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The pattern is: Strategy → Risk → Sizing → OMS → NT8
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**NEVER bypass risk checks.**
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### 2. State Machine Discipline
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Order states follow strict transitions:
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```
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Pending → Working → PartiallyFilled → Filled
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↓ ↓
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Cancelled Cancelled
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↓
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Rejected
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```
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Invalid transitions MUST be rejected and logged.
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### 2. Backward Compatibility
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Phase 2 MUST NOT break Phase 1:
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- BasicRiskManager still works
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- BasicPositionSizer still works
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- BasicOrderManager still works
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- No interface signature changes
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### 3. Thread Safety
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This system will run with:
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- Multiple NT8 callbacks firing simultaneously
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- UI queries happening while orders process
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- Multiple strategies executing simultaneously
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- Multiple NT8 callbacks firing
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- UI queries happening during trading
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- State changes from external events
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ALL shared state MUST be protected with locks.
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### 4. Performance Targets
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- Order submission: <5ms (excluding NT8 adapter)
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- State transition: <1ms
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- Query operations: <1ms
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- Overall tick-to-trade: <200ms
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- Risk validation: <5ms (was <10ms in Phase 1)
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- Sizing calculation: <3ms (was <5ms in Phase 1)
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- Overall tick-to-trade: <200ms (unchanged)
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- No degradation to Phase 1 performance
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### 5. Determinism
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Order processing must be deterministic for:
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All calculations must be deterministic for:
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- Backtesting accuracy
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- Replay debugging
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- Audit trails
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@@ -123,31 +136,65 @@ Order processing must be deterministic for:
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## Reference Documents
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You have access to these design documents:
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- `OMS_Design_Specification.md` - Complete technical design
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- `Kilocode_Implementation_Guide.md` - Step-by-step tasks
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- `OMS_Test_Scenarios.md` - Comprehensive test cases
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- `Phase2_Implementation_Guide.md` - Step-by-step tasks
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- `nt8_phasing_plan.md` - Overall project plan
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- `nt8_dev_spec.md` - Technical specifications
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When uncertain about design decisions, reference these documents.
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## Success Criteria
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Your implementation is complete when:
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- [ ] All 6 deliverables created
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- [ ] All 15 Phase 2 files created
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- [ ] `verify-build.bat` passes
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- [ ] >80% test coverage
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- [ ] All tests passing
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- [ ] >90 total tests passing
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- [ ] >80% test coverage for new code
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- [ ] No C# 6+ syntax
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- [ ] State machine validated
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- [ ] Thread safety verified
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- [ ] Performance targets met
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- [ ] Integration points tested
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- [ ] No breaking changes to Phase 1
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- [ ] Integration tests pass
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- [ ] Documentation complete
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## Phase 1 Foundation (What You're Building On)
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### Already Complete ✅
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- OrderModels with all enums
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- IOrderManager interface
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- BasicOrderManager with state machine
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- BasicRiskManager with Tier 1 rules
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- BasicPositionSizer with fixed methods
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- 34 passing unit tests
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- Mock adapters for testing
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### Phase 1 Code You Can Reference
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- `src/NT8.Core/Risk/BasicRiskManager.cs` - Pattern to follow
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- `src/NT8.Core/Sizing/BasicPositionSizer.cs` - Pattern to follow
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- `src/NT8.Core/OMS/BasicOrderManager.cs` - Pattern to extend
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- `tests/NT8.Core.Tests/Risk/BasicRiskManagerTests.cs` - Test pattern
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## Communication
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When you need clarification:
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1. Check `OMS_Design_Specification.md` first
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2. Check existing code patterns in `src/NT8.Core/Risk/` or `src/NT8.Core/Sizing/`
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1. Check `Phase2_Implementation_Guide.md` first
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2. Check existing Phase 1 code patterns
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3. If still uncertain, ask before implementing
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**Remember:** This is production trading code. When in doubt, ask rather than guess.
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## Current Status
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**Completed:**
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- ✅ Phase 0: Foundation
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- ✅ Phase 1: Basic OMS, Risk, Sizing (34 tests passing)
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**In Progress:**
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- 🔄 Phase 2: Enhanced Risk & Sizing ← **YOU ARE HERE**
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**Next:**
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- ⏭️ Phase 3: Market Microstructure
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- ⏭️ Phase 4: Intelligence & Grading
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- ⏭️ Phase 5: Analytics
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- ⏭️ Phase 6: Advanced Features
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**Progress:** ~10% → ~20% (Phase 2 will double completed functionality)
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