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ConceptsBar Replay

Bar Replay

Bar Replay lets you review historical candles one bar at a time. It is for chart study, discretionary review, and education.

When replay is enabled, BlitzPulse pauses live streaming for that chart and shows a forward-only cursor over the loaded bars. Use Play, Pause, Step, and speed controls to advance the visible candles.

Current launch behavior:

  • Replay uses the bars already loaded for the chart.
  • Replay is forward-only.
  • Live quotes resume after replay is turned off.
  • Replay does not submit orders or automate trades.
  • The replay cursor is shown as a vertical chart line at the active bar.
  • Cursor-aware overlays advance with the replay cursor by using the visible replay end date.
  • Non-cursor intraday overlays pause during replay to avoid showing future-looking data.

Closeout smoke evidence:

  • 2026-05-22 static chart contract smoke covered AAPL, MSFT, NVDA, TSLA, SPY as the representative 5-symbol set.
  • Expected behavior: enable replay, Step advances one bar, the cursor line stays visible, live streaming stays paused, and cursor-aware overlay date ranges do not extend past the active bar.
  • Performance boundary: replay reuses loaded candle data and updates the chart series locally; stepping replay should make no additional backend calls.

Use Bar Replay to study setup development without implying that historical results predict future outcomes.