D01-F01-A02 · Bar Construction

Tick Bars: watch synthetic candles form

Every candle and closure boundary comes from the same 240-trade synthetic fixture. Start with one complete 12-trade bar, move backward or forward across equality, change the integer target, and inspect exact OHLCV lineage.

Tick Bars formed candles and closure boundariesCompleted and forming OHLC candles appear above accepted-record counts. Full-height boundary lines expose a completed candle on hover or keyboard focus.
Up candleDown candleBar closureSession boundary

Audit ledger

BarSessionTradesOHLCVolumeTopic statisticReason

Keyboard: Left/Right Arrow moves one trade, Space plays or pauses, and R restores the canonical 12-trade state. Reduced-motion preference changes Play into one deterministic step.