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Free module · Systematic strategy development

High-Frequency Trading: Signals, Queues & Execution

Measure edge at the point where information becomes an order—and an order becomes a fill.

order books · latency · adverse selection · inventory · replay

The building blocks

High-frequency trading concerns decisions on short market timescales. Begin with who submits an order, where it waits and when it can fill before discussing latency or learned policies.

  • Trace quotes, trades and acknowledgements
  • Measure queues, inventory and order flow
  • Test a strategy in an event-driven replay

Lessons in this module

  1. HFT economics and the information-to-fill timeline
  2. Order-book features: imbalance, microprice and event flow
  3. Volume clocks, trade imbalance and VPIN
  4. Queue position, fill probabilities and adverse selection
  5. Inventory-aware quoting and economic edge development
  6. Event-driven backtesting and order lifecycle correctness
  7. HFT research promotion, drift and operating limits

Open the interactive module

Practice and apply

  • Can the signal survive the delay? — Initial edge 2 bps, decay 10 ms, all-in cost 1 bp.
  • Account for the queue ahead — 100 units ahead, own size 50, 130 units of aggressive volume at the price. Ignore cancellations.
  • Volume imbalance — Completed 100-unit buckets have buy volumes [70,40], sell volumes [30,60]. Find the aggregate absolute-imbalance score.

Work through the practice exercises · Quant development tools