3bdf74018d
Phase E.0 Task 5b. Calibrates FillModel coefficients from historical MBP-10
+ trade tape. Streams snapshots concurrently with time-sorted trades; per
snapshot, determines binary fill outcome ("would a posted L1 limit have
been hit within next --window-seconds?"), accumulates (FillFeatures, y),
calls fit_poisson (cloglog Bernoulli, see d08ab461d). Writes 6 fitted
coefficient sets to JSON.
L1-only limitation: DbnParser::parse_mbp10_streaming ignores
Mbp10Msg.levels[1..10] (only stores levels[0] via update_level(0, ...)),
so this binary fits L1 distributions only and replicates them across
L2/L3 with β_0 -= ln(L+1) attenuation. The parser bug is documented
inline; fixing it is out of Phase E.0 scope.
Scale-bug workaround: parser stores mbp10.price (1e9 fixed-point) directly
into BidAskPair.bid_px/ask_px, but BidAskPair::price_to_f64 divides by 1e12
(different convention). Net: helper returns prices 1000× too small. Binary
uses raw_price_to_f32 (i64 * 1e-9) directly — confirmed in smoke run
(bid_l1=0 with helper, bid_l1=4500-range with workaround).
Smoke run (2K snapshot cap):
- 5.2M trades loaded, front-month filtered
- 19.7M MBP-10 events in file → 2K accumulated via interval=10
- bid_l1 empirical = 0.7%, ask_l1 empirical = 19.4% (uptrend bias in
early-2024 file region; data, not bug)
- bid β_spread = -4.05, ask β_spread = -0.39 (signs sane: wider
spread reduces fill probability)
- Full run pending (sequential mode per user)
Run:
cargo run -p ml --release --example phase_e_fit_fill_model -- \
--mbp10-dir /home/jgrusewski/Work/foxhunt/test_data/futures-baseline-mbp10/ES.FUT \
--trades-dir /home/jgrusewski/Work/foxhunt/test_data/futures-baseline-trades/ES.FUT \
--window-seconds 60 \
--snapshot-interval 50 \
--out-path phase_e_fill_coeffs.json
Foxhunt
Production HFT trading system in Rust.
Architecture
The workspace contains 32 crates organized as follows:
Core Libraries (16)
| Crate | Purpose |
|---|---|
trading_engine |
Order processing, FIX 4.4, IB TWS, SIMD, RDTSC timing |
risk |
VaR, Kelly, circuit breakers, kill switches, compliance |
risk-data |
Risk data types and shared structures |
trading-data |
Trading data types |
ml |
DQN Rainbow, PPO, TFT, Mamba2, ensemble inference |
ml-data |
ML data types and feature definitions |
data |
Market data ingestion and storage |
backtesting |
Replay engine, strategy tester |
adaptive-strategy |
Ensemble execution, microstructure analysis |
common |
Shared types, resilience, error handling |
storage |
S3 and local model storage |
model_loader |
Model serialization and loading |
market-data |
Market data feed handlers |
database |
PostgreSQL access layer (SQLx) |
config |
Configuration management |
tli |
CLI commands and tooling |
Services (8)
| Service | Purpose |
|---|---|
backtesting_service |
gRPC backtesting service |
broker_gateway_service |
FIX routing, broker connectivity |
trading_service |
Core trading operations |
ml_training_service |
Model training orchestration |
data_acquisition_service |
Market data acquisition |
trading_agent_service |
Autonomous trading agents |
api_gateway |
gRPC API gateway with auth |
web-gateway |
Axum REST + WebSocket gateway |
Frontend
web-dashboard/ -- React 19 + TypeScript + Vite + TradingView charts.
Building
# Check compilation (no PostgreSQL required)
SQLX_OFFLINE=true cargo check --workspace
# Run tests for a specific crate
SQLX_OFFLINE=true cargo test -p <crate> --lib
# Clippy
SQLX_OFFLINE=true cargo clippy --workspace
ML Models
Four production model architectures on Candle v0.9.1 with CUDA:
- DQN Rainbow -- Deep Q-Network with prioritized replay, dueling heads, noisy nets
- PPO -- Proximal Policy Optimization with GAE and LSTM policies
- TFT -- Temporal Fusion Transformer for multi-horizon forecasting
- Mamba2 -- State space model for sequence prediction
Each model has a standalone trainer and a UnifiedTrainable adapter for the hyperopt pipeline.
Infrastructure
- Git: Gitea at
git.fxhnt.ai(Tailscale-only), Scaleway DEV1-S - Observability: OpenTelemetry OTLP (env
OTEL_EXPORTER_OTLP_ENDPOINT) - Database: PostgreSQL with SQLx offline mode for CI
License
Proprietary. All rights reserved.