QuantConnect / QuantConnect/Lean

Allow Trading Outside Regular Market Hours in the Default Fill Model

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#3,947 2 comments 0 reactions 0 assignees View on GitHub

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depth feature
Dominant language
C#
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Avg merge
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Merged PRs (30d)
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Description

Expected Behavior

Be able to place orders that can be filled outside RTH.

Actual Behavior

Lean only allows orders to be filled in RTH.

Potential Solution

In FillModel, replace hard-coded parameter false in IsExchangeOpen calls for the security extended market value.

Reproducing the Problem

Use extended market hours in BasicTemplateAlgorithm, a market order should be placed at 4 am.

Checklist
  • I have completely filled out this template
  • I have confirmed that this issue exists on the current master branch
  • I have confirmed that this is not a duplicate issue by searching issues
  • I have provided detailed steps to reproduce the issue

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start in FillModel and inspect the IsExchangeOpen calls that use the security's extended market value. Reproduce the issue with extended market hours in BasicTemplateAlgorithm, then verify that a market order can be placed at 4 am without preventing regular-hours fills.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp
Domain
fintech-quant
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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