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Record the live market

Recording saves a stretch of the live market, every price update and order book change, so you can replay it later. It also saves the previous three days of tick history, so tick and minute charts have data around the session.

Applies to Web and DesktopUpdated 2 Nov 2026Read time 2 min

Before you start

  • A Rithmic connection is connected and the market you want is open. Connect it first. See Connect Rithmic.
  • Market Replay is disconnected. While it's connected, Record… is off, and Replay and live data can't run together.
  • Your market data comes from Rithmic. Recording only works from a connected Rithmic data source.

Record a session

  1. Open Connections and click the gear icon on the Market Replay row.
  2. In Record live market, click Record….
  3. Under Live data source, choose the Rithmic connection to record from.
  4. Under Markets, search for a contract in Market 1. Add Market 2 (optional) and Market 3 (optional) if you want them. Click the × next to a market to clear it.
  5. Under Duration, choose 15 minutes, 30 minutes or 60 minutes.
  6. Click Start recording.

Pick a fixed contract such as ESZ6. A continuous symbol such as ES is refused with Choose a fixed contract such as ESZ6, not a continuous ES symbol. You can only choose each market once.

While it records

  • The recording begins once Tradrr has a live bid/ask and order book for every selected market. Until then the progress line reads Preparing 1/2 markets… and Stop & save is off.
  • Then it counts up, for example 03:25 / 15:00, with the markets and the number of events captured.
  • The Market Replay row in Connections shows the same progress with a recording indicator.
  • The recording stops and saves by itself when the time is up. Click Stop & save to finish early.
  • Click Cancel to throw the recording away.

Careful. Keep the Rithmic connection you record from connected. If it disconnects, the recording fails with The recorded market-data source disconnected.

When it finishes

  1. Tradrr downloads the previous three days of historical ticks from the same connection. You see Downloading historical ticks with a count, then Historical ticks ready. If some history is missing, it reads Historical data incomplete. If the download is still running when the recording ends, Tradrr finishes it before saving.
  2. Tradrr saves the recording to My recordings and selects it for Market Replay.
  3. A message confirms Recording saved and selected for Market Replay.

To play it, click Connect on the Market Replay row. If Rithmic is still connected, disconnect it first.

If saving fails

MessageWhat to do
Recording not savedClick Retry save. Click Discard to drop it.
Recording saved, not selectedThe recording is in My recordings. Disconnect Market Replay, then click Retry selection or pick it from the list. Close dismisses the message.
Recording stopped early at the replay storage safety limitThe captured part was kept. Next time, record a shorter session or fewer markets.
Persistent replay storage is unavailableAllow site storage in your browser and retry.

Manage the saved recording in My recordings.

My recordingsChoose, download or delete the recorded sessions saved for Market Replay.Market Replay settingsEvery option in the Market Replay settings window: the selected session, the US Open sample, recording, My recordings and import.Market Replay overviewPractice on a recorded market session with simulated orders, any time of day, using the Replay 01 and Replay 02 accounts.Connect RithmicAdd a Rithmic login from your prop firm or broker, connect it, and check that data, orders and P&L are live.

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