One tick, five steps

More rejected than opened is the normal, healthy shape. The gate exists to refuse trades, and a deployment where everything is accepted is a deployment whose limits are set too wide.

1. 1
   Refresh market data

   Each active instrument advances its candles and writes a fresh quote. Everything downstream reads the same bar, so two strategies in one tick can never disagree about the price.

2. 2
   Expire stale circuit breakers

   A breaker tripped earlier is released once its cool-off has passed, before anything is evaluated. Otherwise a pool could stay halted for a reason that expired hours ago.

3. 3
   Evaluate every strategy in every active pool

   Each instance sees only closed bars. A strategy is skipped entirely if it has not accumulated its warm-up history, because an indicator computed on too few bars is a number without a meaning.

4. 4
   Size, gate, then place

   Position size is derived from the stop distance and the pool’s risk budget; then fourteen checks run; only then does an order reach a broker adapter.

5. 5
   Record and reconcile

   Fills, slippage and commission are written double-entry, positions are marked to market, and the pool’s equity is recalculated from the ledger rather than adjusted in place.