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Pull requests: QuantConnect/Lean
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Restore Python's builtin Exception shadowed by AlgorithmImports star imports
#9691
opened Aug 12, 2026 by
jhonabreul
Collaborator
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6 of 11 tasks
Delay reading option chain universe files until close to market open in live trading
#9690
opened Aug 12, 2026 by
jhonabreul
Collaborator
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7 of 11 tasks
feature: add TerminalLink IsCfdTrade order property
#9689
opened Aug 12, 2026 by
AlexCatarino
Member
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Fall back to per-leg margin when option strategy margin cannot be computed
#9682
opened Aug 11, 2026 by
jhonabreul
Collaborator
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7 of 11 tasks
Fail loudly on canonical continuous future orders, add Future.Canonical and mapped-contract guidance
#9681
opened Aug 11, 2026 by
jhonabreul
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Draft
7 of 11 tasks
Fail fast at add time naming valid markets, add subscription-free market hours lookup
#9680
opened Aug 11, 2026 by
jhonabreul
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6 of 11 tasks
Handle null keys gracefully in dictionary lookup methods
#9679
opened Aug 11, 2026 by
jhonabreul
Collaborator
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6 of 11 tasks
Python model interop: subclassable SlippageModel base, algorithm-level SetSlippageModel, None framework models, callable security seeder
#9678
opened Aug 11, 2026 by
jhonabreul
Collaborator
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Draft
6 of 11 tasks
Add scheduling API conveniences: callable-tolerant rule properties, every-N-days, IANA time zone ids, default time rule
#9677
opened Aug 11, 2026 by
jhonabreul
Collaborator
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Draft
6 of 11 tasks
Polish the order surface: numeric OrderFee, flat combo group ids, tag tolerance and notional targeting
#9676
opened Aug 11, 2026 by
jhonabreul
Collaborator
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Draft
6 of 11 tasks
Improve consolidator registration ergonomics: quote-to-trade bar adaptation, registration-time period validation, calendar periods in RegisterIndicator
#9675
opened Aug 11, 2026 by
jhonabreul
Collaborator
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Draft
7 of 11 tasks
Improve ObjectStore ergonomics for end-of-run persistence
#9674
opened Aug 11, 2026 by
jhonabreul
Collaborator
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Draft
6 of 11 tasks
Add DeregisterAll and automatic indicator deregistration on security removal
#9673
opened Aug 11, 2026 by
jhonabreul
Collaborator
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Draft
7 of 11 tasks
Automatic warm-up for registered indicators, scalar Update error and not-ready Current warning
#9670
opened Aug 11, 2026 by
jhonabreul
Collaborator
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Draft
7 of 11 tasks
Add big-request guardrails and honest resource diagnostics
#9669
opened Aug 11, 2026 by
jhonabreul
Collaborator
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6 of 11 tasks
Improve pandas history ergonomics: self-describing KeyErrors, DataFrame.get(symbol), lazy DataFrame on typed history
#9668
opened Aug 11, 2026 by
jhonabreul
Collaborator
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Draft
6 of 11 tasks
Add option chain selection helpers
#9667
opened Aug 11, 2026 by
jhonabreul
Collaborator
•
Draft
6 of 11 tasks
Add BracketOrder API with engine-guaranteed OCO semantics
#9666
opened Aug 11, 2026 by
jhonabreul
Collaborator
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Draft
6 of 11 tasks
Name the missing key and suggest safe access in collection key-not-found errors
#9664
opened Aug 11, 2026 by
jhonabreul
Collaborator
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5 of 11 tasks
Improve error messages for datetime vs date operations in Python algorithms
#9659
opened Aug 10, 2026 by
jhonabreul
Collaborator
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6 of 11 tasks
Fix CryptoFuture.IsCryptoCoinFuture() misclassifying USD-quoted linea…
#9628
opened Jul 20, 2026 by
iharshlalakiya
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Add scheduled walk-forward optimization support
#9611
opened Jul 13, 2026 by
scarab-systems
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5 of 11 tasks
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