Jhonathan Abreu c22774e49e Fix margin call handling for single-lot option strategy position groups (#9612) ...

A margin call requiring a partial reduction of an option strategy
position group probes a zero-quantity trial group while solving for the
order quantity. The option strategy margin helpers assume at least one
leg with non-zero quantity and threw InvalidOperationException,
crashing the algorithm. Return zero initial/maintenance margin for
zero-quantity groups so the margin call converges on full liquidation.

2026-07-13 15:17:19 -04:00

..

Algorithm/Framework

Follow up: Fix weights calculation in VBaseSignalExport (#9281)

2026-02-12 09:42:45 -03:00

Api

Add optimization analysis (#9495)

2026-05-28 14:00:14 -03:00

Benchmarks

Support new Pythonnet delegates auto conversion (#8913)

2025-08-07 09:40:06 -04:00

Brokerages

Fix TerminalLink brokerage model order update and MarketOnClose support (#9556)

2026-06-23 11:05:21 -03:00

Commands

OrderCommand should use default order properties (#9274)

2026-02-09 09:37:15 -03:00

Data

Improve error messages for unsupported Python objects in user-facing APIs (#9607)

2026-07-13 09:23:35 -04:00

Exceptions

Keep pythonnet overloads hint in NoMethodMatchPythonExceptionInterpreter message (#9594)

2026-07-07 16:17:02 -04:00

Indicators

Add built-in rolling window to all consolidators (#9366)

2026-07-07 16:12:46 -05:00

Interfaces

Market orders wait for fresh data instead of filling on stale prices (#9535)

2026-06-18 11:59:19 -03:00

Messages

feature: add public order properties (#9549)

2026-06-19 23:33:51 +03:00

Notifications

Update IB gateway v10.39.1f (#8923)

2025-08-13 14:51:48 -03:00

Optimizer

Add optimization analysis (#9495)

2026-05-28 14:00:14 -03:00

Orders

Wait for fresh data before filling market orders on stale data (#9563)

2026-07-01 11:22:50 -04:00

Packets

Results analyzer (#9336)

2026-04-07 17:41:12 -04:00

Parameters

Fix Warnings V2 (#5436)

2021-04-02 11:20:01 -07:00

Properties

Remove all nuspec files (#5311)

2021-02-18 17:13:11 -03:00

Python

Consolidator rolling window fixes (#9596)

2026-07-08 10:22:38 -03:00

Scheduling

Default to all market hours when no symbol is provided to time rules (#9470)

2026-05-11 09:55:45 -03:00

Securities

Fix margin call handling for single-lot option strategy position groups (#9612)

2026-07-13 15:17:19 -04:00

Statistics

Compute probabilistic Sharpe ratio on excess returns (#9583)

2026-07-06 16:24:52 -03:00

Storage

Throw exceptions when ObjectStore limits are exceeded in Research mode (#9060)

2025-10-27 10:16:25 -05:00

Util

Add Empty property to MemoizingEnumerable (#9576)

2026-07-01 11:30:52 -04:00

AlgorithmConfiguration.cs

Normalize OutOfSampleMaxEndDate datetime format (#8935)

2025-08-18 18:44:25 -03:00

AlgorithmImports.py

Revert "Market-hours aware intraday consolidation (#9516)" (#9528)

2026-06-12 09:27:54 -03:00

AlgorithmSettings.cs

Market orders wait for fresh data instead of filling on stale prices (#9535)

2026-06-18 11:59:19 -03:00

AlgorithmUtils.cs

Seed runtime-added currency conversion rates immediately (#9568)

2026-07-01 12:40:54 -03:00

Analysis.cs

Results analyzer (#9336)

2026-04-07 17:41:12 -04:00

BaseSeries.cs

Improve portfolio margin chart (#9011)

2025-10-03 17:56:27 -03:00

BinaryComparison.cs

Add OptionStrategyMatcher (#4924)

2020-12-02 18:42:24 -03:00

BinaryComparisonExtensions.cs

Add OptionStrategyMatcher (#4924)

2020-12-02 18:42:24 -03:00

Candlestick.cs

Add support for null chart points (#7622)

2023-12-12 20:26:58 -03:00

CandlestickSeries.cs

fix CandlestickSeries constructor (#8664)

2025-03-31 16:44:22 -03:00

CapacityEstimate.cs

Fix warnings CA1574 (#8186)

2024-07-09 17:52:07 -03:00

Chart.cs

Improve portfolio margin chart (#9011)

2025-10-03 17:56:27 -03:00

ChartPoint.cs

Fix scatter chart point serialization (#7772)

2024-02-08 15:36:38 -03:00

ChartSeriesJsonConverter.cs

Fix warnings part 12 (#8182)

2024-07-09 11:08:42 -03:00

Country.cs

Adds Country Static Class (#8389)

2024-11-01 19:13:07 -03:00

Currencies.cs

Fix USDC binance crypto future and stable pairs (#9246)

2026-01-28 09:49:28 -03:00

DataDownloaderGetParameters.cs

Implement Download Project in Lean (#7975)

2024-04-25 19:53:58 -03:00

DataMonitorReport.cs

Data monitor (#6725)

2022-11-09 17:38:34 -03:00

DataProviderEvents.cs

DividedEventProvider distribution computation (#4828)

2020-11-11 15:47:51 -03:00

DataUniverseDownloaderGetParameters.cs

Futures and Future Options file-based universes (#8480)

2025-03-25 16:22:38 -04:00

DefaultConverter.cs

Fix warnings part 12 (#8182)

2024-07-09 11:08:42 -03:00

DocumentationAttribute.cs

Add file and line number to documentation attribute (#6122)

2021-12-20 17:30:04 -08:00

Exchange.cs

feature: recognise equity tape letters S/V/H/U and add NASDAQ_SC (#9422)

2026-04-21 23:27:16 +03:00

Expiry.cs

Fixes Expiry.EndOfMonth and Expiry.EndOfYear Methods

2020-04-02 02:35:47 +01:00

ExtendedDictionary.cs

Improves Null Key Handling in Python (#9368)

2026-04-10 15:17:03 -03:00

Extensions.cs

Improve error messages for unsupported Python objects in user-facing APIs (#9607)

2026-07-13 09:23:35 -04:00

Field.cs

Add more options to Field class (#8228)

2024-08-07 19:08:34 -03:00

FileExtension.cs

Fix warnings part 12 (#8182)

2024-07-09 11:08:42 -03:00

Global.cs

feature: recognise equity tape letters S/V/H/U and add NASDAQ_SC (#9422)

2026-04-21 23:27:16 +03:00

Globals.cs

Private cloud minor improvements (#8409)

2024-11-14 17:22:33 -03:00

IDataDownloader.cs

Feature: Generic brokerage downloader wrapper (#8235)

2024-07-31 19:02:13 -03:00

IIsolatorLimitResultProvider.cs

Properly handle events raised in ScheduledEvents

2019-10-19 14:52:34 -04:00

ISeriesPoint.cs

Candlestick charts (#7425)

2023-08-08 17:52:46 -03:00

Isolator.cs

task: remove extraneous defaults from Isolator/MonitorTask (#9514)

2026-06-08 13:56:37 -03:00

IsolatorLimitResult.cs

Refactors scheduled events to execute on main thread

2019-10-19 14:52:34 -04:00

IsolatorLimitResultProvider.cs

Refactor IsolatorLimitResultProvider

2020-03-02 18:23:20 -03:00

ITimeProvider.cs

Move ITimeProvider and RealTimeProvider to Common

2019-10-19 01:52:07 -04:00

LocalTimeKeeper.cs

Remove usage of Lazy<DateTime> in LocalTimeKeeper

2017-12-29 01:12:58 +01:00

Market.cs

Fix dydx camel case (#9223)

2026-01-14 11:55:29 -03:00

OS.cs

Move QuantConnect namespace's messages to Messages folder (#6924)

2023-02-10 10:41:05 -03:00

PandasMapper.py

Fix PandasColumn equality wrongly matching non-string values (#9509)

2026-06-04 17:45:42 -03:00

Parse.cs

Move QuantConnect namespace's messages to Messages folder (#6924)

2023-02-10 10:41:05 -03:00

QuantConnect.csproj

Improve error messages for unsupported Python objects in user-facing APIs (#9607)

2026-07-13 09:23:35 -04:00

RealTimeProvider.cs

Defines ITokenBucket and a LeakyBucket implementation

2019-10-19 01:52:07 -04:00

RealTimeSynchronizedTimer.cs

Update all LEAN threads to be Background threads

2017-06-28 21:02:59 +02:00

RegressionTestException.cs

1/4 of the changes of RegressionTestException (#8100)

2024-06-24 15:23:33 -03:00

Result.cs

Results analyzer (#9336)

2026-04-07 17:41:12 -04:00

ScatterChartPoint.cs

Fix scatter chart point serialization (#7772)

2024-02-08 15:36:38 -03:00

ScatterChartPointJsonConverter.cs

Fix warnings part 6 (#8107)

2024-06-26 13:21:53 -03:00

SecurityIdentifier.cs

Fix SecurityIdentifier properties lazy initialization (#9214)

2026-01-09 18:07:26 -03:00

Series.cs

Replace /// with <summary> (#9095)

2025-11-24 17:09:39 -04:00

SeriesSampler.cs

Improve portfolio margin chart (#9011)

2025-10-03 17:56:27 -03:00

StringExtensions.cs

PEP8 style algorithm API (#7909)

2024-04-12 17:29:15 -03:00

StubsAvoidImplicitsAttribute.cs

Add StubsAvoidImplicitsAttribute to avoid generating implicit types in stubs (#8718)

2025-04-23 14:22:14 -03:00

StubsIgnoreAttribute.cs

PEP8 style algorithm API (#7909)

2024-04-12 17:29:15 -03:00

Symbol.cs

Futures and Future Options file-based universes (#8480)

2025-03-25 16:22:38 -04:00

SymbolCache.cs

QCAlgorithm's OptionChain() api refactor (#8334)

2024-10-04 12:26:15 -04:00

SymbolCapacity.cs

Make continuous future untradable (#6252)

2022-03-14 14:23:26 -03:00

SymbolJsonConverter.cs

Feat: support downloading single contract in DownloaderProvider (#9285)

2026-02-13 13:45:10 -03:00

SymbolRepresentation.cs

Fix OSI option ticker parsing for symbols containing dots (e.g. BRK.B) (#9343)

2026-04-07 13:04:55 -03:00

SymbolValueJsonConverter.cs

Move QuantConnect namespace's messages to Messages folder (#6924)

2023-02-10 10:41:05 -03:00

Time.cs

Fix start time calculation for daily requests (#8975)

2025-09-15 18:35:25 -03:00

TimeKeeper.cs

Fix price shifts around futures rollover date (#8371)

2024-10-21 09:38:00 -03:00

TimeUpdatedEventArgs.cs

Fix half of the CA1051 warnings (#8137)

2024-07-03 15:43:17 -03:00

TimeZoneOffsetProvider.cs

Add note for TimeZoneOffsetProvider StartTime (#5469)

2021-04-08 18:00:17 -03:00

TimeZones.cs

Indian stock markets support & Zerodha brokerage implementation (#4873)

2021-03-08 18:51:54 -03:00

TradingCalendar.cs

Move QuantConnect namespace's messages to Messages folder (#6924)

2023-02-10 10:41:05 -03:00

TradingDay.cs

Update enum values in comments (#6460)

2022-07-05 10:29:28 -03:00