Platform
Three systems, built in the order they depend on each other.
Everything below describes what is built. None of it reports how any strategy has performed, and nothing on this page should be read as a result.
Market data
Recording the chain while the session runs
Option chain quotes are recorded as the session runs, at the resolution the strategies are evaluated at. The recorder writes continuously rather than sampling on demand, because the question a replay asks later is not knowable while the data is still arriving.
Short-dated option quote history cannot be purchased after expiry. Once a contract has expired, the quote record for it is not reconstructable from any vendor, at any price. That single fact is why recording comes first and why the archive is treated as the asset it is.
The archive is the reference every later measurement is made against. When a strategy is evaluated, it is evaluated against what the market actually showed at the time, not against a summarised or reconstructed version of it.
Evaluation
Replay against the recording, with costs in
Strategy logic is replayed against recorded sessions rather than against summary bars. A bar tells you where a contract traded; it does not tell you what you could have transacted at, which is the only question that matters when the decision is whether to open a position.
Execution cost is modelled as part of the replay rather than applied afterwards as an assumption. Spread, the side of the book a fill would have taken, and fees are carried through the evaluation, so a parameter that only works at the midpoint does not survive to being proposed.
Validation is walk-forward: parameters chosen on one period are measured on a later one they were not fitted to. A strategy that only holds on the window it was tuned on has not been evaluated, it has been described.
Execution
Deterministic controls, defined risk, fail closed
Strategies run automatically. Entry, exit and sizing are encoded before a strategy is live, and there is no discretionary override once it is — not as a matter of policy, but because there is no mechanism for one.
Risk is defined at the structure level. Every position has a known worst case at the time it is opened, and there is no naked short exposure. Hard loss caps are enforced by the execution layer rather than by the strategy that would have to breach them.
The system fails closed. If market data, connectivity or a risk check is unavailable, execution stops rather than continuing on stale inputs. A halted system is a recoverable state; a system trading on data it cannot verify is not.
This page is a description of capability. It does not claim, and should not be read as claiming, that any strategy has produced any particular outcome.