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99 CAPITAL

01 // Technology

Engineering is the edge we are willing to talk about.

Everything we trade runs on systems we designed, built and operate ourselves. Four principles shape all of it.

01.A

Latency determinism

Fast is necessary; predictable is the requirement. We design for the tail, not the average, and treat variance as a defect.

  • Lock-free hot paths
  • Pinned cores, no shared contention
  • Shared-memory transport between processes
01.B

Risk on the critical path

Controls that run beside the order path are reports. Ours run on it — every order is checked in line before it leaves.

  • Pre-trade checks in line
  • Firm-wide exposure in real time
  • Operator kill-switch
01.C

Reproducibility

If a session cannot be replayed exactly, it cannot be understood. Every input is captured and every run can be reproduced byte for byte.

  • Full capture of inputs and outputs
  • Deterministic simulation clock
  • Byte-identical replay
01.D

Operational rigor

Production is a system, not a collection of processes. The trading day is orchestrated, observed and audited end to end.

  • Dependency-ordered daily lifecycle
  • Central entitlements and audit
  • Alerts reduced to signal