1e656948b3
Per spec §4.3 + plan C1.4. Safety backup for the primary exit path
(target → 0 from collapsed multi-horizon conviction, C1.2). Catches
the edge case where conviction stays bounded above zero but the trade
is deep in unrealized loss, or short/long horizons disagree for many
events while threshold-gate logic still permits sizing.
Three terms, max-of-three composite:
degradation_term = (1 − conv_ema_now / conviction_at_entry) / 2.0
disagreement_term = disagree_consecutive_events / 32.0
pnl_decay_term = max(−pnl_adjusted_conv_ema, 0) / 1.0
exit_signal = max(deg, dis, pnl_decay)
Fires force-flat (market_targets = (3, 0)) when exit_signal >= 1.0.
State-update flow:
- pnl_track open branch: write conviction_at_entry (offset 20),
conviction_ema (offset 24, initialised to entry value),
pnl_adjusted_conviction_ema (offset 44, = 0),
peak_unrealized_pnl (offset 48, = 0). Takes new conviction_ema_per_b
read-only arg to snapshot at open.
- decision kernel intra-event (when pos open): update offsets
24/44/48/56 (disagreement counter) via update_open_trade_trajectory.
- composite_exit_check device helper: reads offsets 20/24/44/56,
writes (3, 0) on fire. Sibling of stop_check_isv with same return
semantics; called after trajectory update so all four reads see
the freshly-written values.
Fields not read in CRT.1 (offsets 28-43 per-horizon EMA, 52 degradation
counter, 60 horizon_idx_dominant) are NOT written by the open branch —
alloc_zeros covers init. Per feedback_no_hiding: don't populate unused
fields. Also fixes a latent C1.1 bug: pnl_track close branch read
horizon_idx from offset 20 (now conviction_at_entry, f32); moved the
read to offset 60 per the documented layout.
Threshold-bootstrap defaults (will be ISV-derived in CRT.2 alongside
the rest of the controller anchors per pearl_controller_anchors_isv_driven):
degradation_factor = 2.0 (50% conviction decay vs entry → ≤0.5 term)
disagreement_factor = 32.0 (32 events of short/long disagreement)
pnl_decay_factor = 1.0 (pnl_adj_conv structurally ∈ [-1, +1])
Under these defaults disagreement_term is the only term that can fire
on its own — degradation_term caps at 0.5 (conv_ema/conviction_at_entry
≥ 0) and pnl_decay_term caps at 1.0 in the limit. The three terms still
add evidence in superposition; CRT.2 will retune factors against ISV
percentiles. Unit-test coverage validates the disagreement path
(composite_exit_signal_fires_on_disagreement).
Per pearl_no_host_branches_in_captured_graph — all composite logic
lives inside the decision kernel; no host roundtrip in the per-event
hot path. Per feedback_no_htod_htoh_only_mapped_pinned — no new
memcpy or stream.synchronize() in step_pnl_track or
dispatch_latent_market_orders.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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.