NautilusTrader 1.194.0 Beta

NautilusTrader 1.194.0 Beta

Released on 31st May 2024 (UTC).

Enhancements

• Added DataEngine order book deltas buffering to F_LAST flag (#1673), thanks @davidsblom
• Added DataEngineConfig.buffer_deltas config option for the above (#1670), thanks @davidsblom
• Improved Bybit order book deltas parsing to set F_LAST flag (#1670), thanks @davidsblom
• Improved Bybit handling for top-of-book quotes and order book deltas (#1672), thanks @davidsblom
• Improved Interactive Brokers integration test mocks (#1669), thanks @rsmb7z
• Improved error message when no tick scheme initialized for an instrument, thanks for reporting @VeraLyu
• Improved SandboxExecutionClient instrument handling (instruments just need to be added to cache)
• Ported VolumeWeightedAveragePrice indicator to Rust (#1665), thanks @Pushkarm029
• Ported VerticalHorizontalFilter indicator to Rust (#1666), thanks @Pushkarm029

Breaking Changes

None

Fixes

• Fixed SimulatedExchange processing of commands in real-time for sandbox mode
• Fixed DataEngine unsubscribe handling (edge case would attempt to unsubscribe from the client multiple times)
• Fixed Bybit order book deltas parsing (was appending bid side twice) (#1668), thanks @davidsblom
• Fixed Binance instruments price and size precision parsing (was incorrectly stripping trailing zeros)
• Fixed BinanceBar streaming feather writing (was not setting up writer)
• Fixed backtest high-level tutorial documentation errors, thanks for reporting @Leonz5288

NautilusTrader 1.193.0 Beta

NautilusTrader 1.193.0 Beta

Released on 24th May 2024 (UTC).

Enhancements

• Added Interactive Brokers support for Market-on-Close (MOC) and Limit-on-Close (LOC) order types (#1663), thanks @rsmb7z
• Added Bybit sandbox example (#1659), thanks @davidsblom
• Added Binance sandbox example

Breaking Changes

• Overhauled SandboxExecutionClientConfig to more closely match BacktestVenueConfig (many changes and additions)

Fixes

• Fixed DataFusion backend data ordering by ts_init when streaming (#1656), thanks @twitu
• Fixed Interactive Brokers tick level historical data downloading (#1653), thanks @DracheShiki

NautilusTrader 1.192.0 Beta

NautilusTrader 1.192.0 Beta

Released on 18th May 2024 (UTC).

Enhancements

• Added Nautilus CLI (see docs) (#1602), many thanks @filipmacek
• Added Cfd and Commodity instruments with Interactive Brokers support (#1604), thanks @DracheShiki
• Added OrderMatchingEngine futures and options contract activation and expiration simulation
• Added Sandbox example with Interactive Brokers (#1618), thanks @rsmb7z
• Added ParquetDataCatalog S3 support (#1620), thanks @benjaminsingleton
• Added Bar.from_raw_arrays_to_list (#1623), thanks @rsmb7z
• Added SandboxExecutionClientConfig.bar_execution option (#1646), thanks @davidsblom
• Improved venue order ID generation and assignment (it was previously possible for the OrderMatchingEngine to generate multiple IDs for the same order)
• Improved LiveTimer robustness and flexibility by not requiring positive intervals or stop times in the future (will immediately produce a time event), thanks for reporting @davidsblom

Breaking Changes

• Removed allow_cash_positions config (simplify to the most common use case, spot trading should track positions)
• Changed tags param and return type from str to list[str] (more naturally expresses multiple tags)
• Changed Order.to_dict() commission and linked_order_id fields to lists of strings rather than comma separated strings
• Changed OrderMatchingEngine to no longer process internally aggregated bars for execution (no tests failed, but still classifying as a behavior change), thanks for reporting @davidsblom

Fixes

• Fixed CashAccount PnL and balance calculations (was adjusting filled quantity based on open position quantity - causing a desync and incorrect balance values)
• Fixed from_str for Price, Quantity and Money when input string contains underscores in Rust, thanks for reporting @filipmacek
• Fixed Money string parsing where the value from str(money) can now be passed to Money.from_str
• Fixed TimeEvent equality (now based on the event id rather than the event name)
• Fixed ParquetDataCatalog bar queries by instrument_id which were no longer returning data (the intent is to use bar_type, however using instrument_id now returns all matching bars)
• Fixed venue order ID generation and application in sandbox mode (was previously generating additional venue order IDs), thanks for reporting @rsmb7z and @davidsblom
• Fixed multiple fills causing overfills in sandbox mode (OrderMatchingEngine now caching filled quantity to prevent this) (#1642), thanks @davidsblom
• Fixed leaves_qty exception message underflow (now correctly displays the projected negative leaves quantity)
• Fixed Interactive Brokers contract details parsing (#1615), thanks @rsmb7z
• Fixed Interactive Brokers portfolio registration (#1616), thanks @rsmb7z
• Fixed Interactive Brokers IBOrder attributes assignment (#1634), thanks @rsmb7z
• Fixed IBKR reconnection after gateway/TWS disconnection (#1622), thanks @benjaminsingleton
• Fixed Binance Futures account balance calculation (was over stating free balance with margin collateral, which could result in a negative locked balance)
• Fixed Betfair stream reconnection and avoid multiple reconnect attempts (#1644), thanks @imemo88

NautilusTrader 1.191.0 Beta

NautilusTrader 1.191.0 Beta

Released on 20th April 2024 (UTC).

Enhancements

• Implemented FeeModel including FixedFeeModel and MakerTakerFeeModel (#1584), thanks @rsmb7z
• Implemented TradeTickDataWrangler.process_bar_data (#1585), thanks @rsmb7z
• Implemented multiple timeframe bar execution (will use lowest timeframe per instrument)
• Optimized LiveTimer efficiency and accuracy with tokio timer under the hood
• Optimized QuoteTickDataWrangler and TradeTickDataWrangler (#1590), thanks @rsmb7z
• Standardized adapter client logging (handle more logging from client base classes)
• Simplified and consolidated Rust OrderBook design
• Improved CacheDatabaseAdapter graceful close and thread join
• Improved MessageBus graceful close and thread join
• Improved modify_order error logging when order values remain unchanged
• Added RecordFlag enum for Rust and Python
• Interactive Brokers further improvements and fixes, thanks @rsmb7z
• Ported Bias indicator to Rust, thanks @Pushkarm029

Breaking Changes

• Reordered OrderBookDelta params flags and sequence and removed default 0 values (more explicit and less chance of mismatches)
• Reordered OrderBook params flags and sequence and removed default 0 values (more explicit and less chance of mismatches)
• Added flags parameter to OrderBook.add
• Added flags parameter to OrderBook.update
• Added flags parameter to OrderBook.delete
• Changed Arrow schema for all instruments: added info binary field
• Changed Arrow schema for CryptoFuture: added is_inverse boolean field
• Renamed both OrderBookMbo and OrderBookMbp to OrderBook (consolidated)
• Renamed Indicator.handle_book_mbo and Indicator.handle_book_mbp to handle_book (consolidated)
• Renamed register_serializable_object to register_serializable_type (also renames first param from obj to cls)

Fixes

• Fixed MessageBus pattern resolving (fixes a performance regression where topics published with no subscribers would always re-resolve)
• Fixed BacktestNode streaming data management (was not clearing between chunks), thanks for the report @dpmabo
• Fixed RiskEngine cumulative notional calculations for margin accounts (was incorrectly using base currency when selling)
• Fixed selling Equity instruments with CASH account and NETTING OMS incorrectly rejecting (should be able to reduce position)
• Fixed Databento bars decoding (was incorrectly applying display factor)
• Fixed Binance bar (kline) to use close_time for ts_event was opentime (#1591), thanks for reporting @OnlyC
• Fixed AccountMarginExceeded error condition (margin must actually be exceeded now, and can be zero)
• Fixed ParquetDataCatalog path globbing which was including all paths with substrings of specified instrument IDs

NautilusTrader 1.190.0 Beta

NautilusTrader 1.190.0 Beta

Released on 22nd March 2024 (UTC).

Enhancements

• Added Databento adapter continuous, parent and instrument_id symbology support (will infer from symbols)
• Added DatabaseConfig.timeout config option for timeout seconds to wait for a new connection
• Added CSV tick and bar data loader params, thanks @rterbush
• Implemented LogGuard to ensure global logger is flushed on termination, thanks @ayush-sb and @twitu
• Improved Interactive Brokers client connectivity resilience and component lifecycle, thanks @benjaminsingleton
• Improved Binance execution client ping listen key error handling and logging
• Improved Redis cache adapter and message bus error handling and logging
• Improved Redis port parsing (DatabaseConfig.port can now be either a string or integer)
• Refactored InteractiveBrokersEWrapper, thanks @rsmb7z
• Redact Redis passwords in strings and logs
• Upgraded redis crate to 0.25.2 which bumps up TLS dependencies, and turned on tls-rustls-webpki-roots feature flag

Breaking Changes

None

Fixes

• Fixed JSON format for log file output (was missing timestamp and trader_id)
• Fixed DatabaseConfig port JSON parsing for Redis (was always defaulting to 6379)
• Fixed ChandeMomentumOscillator indicator divide by zero error (both Rust and Cython versions)

NautilusTrader 1.189.0 Beta

NautilusTrader 1.189.0 Beta

Released on 15th March 2024 (UTC).

Enhancements

• Implemented Binance order book snapshot rebuilds on websocket reconnect (see integration guide)
• Added additional validations for OrderMatchingEngine (will now raise a RuntimeError when a price or size precision for OrderFilled does not match the instruments precisions)
• Added LoggingConfig.use_pyo3 option for pyo3 based logging initialization (worse performance but allows visibility into logs originating from Rust)
• Added exchange field to FuturesContract, FuturesSpread, OptionsContract and OptionsSpread (optional)

Breaking Changes

• Changed Arrow schema adding exchange field for FuturesContract, FuturesSpread, OptionsContract and OptionsSpread

Fixes

• Fixed MessageBus handling of subscriptions after a topic has been published on (was previously dropping messages for these late subscribers)
• Fixed MessageBus handling of subscriptions under certain edge cases (subscriptions list could be resized on iteration causing a RuntimeError)
• Fixed Throttler handling of sending messages after messages have been dropped, thanks @davidsblom
• Fixed OrderBookDelta.to_pyo3_list using zero precision from clear delta
• Fixed DataTransformer.pyo3_order_book_deltas_to_record_batch_bytes using zero precision from clear delta
• Fixed OrderBookMbo and OrderBookMbp integrity check when crossed book
• Fixed OrderBookMbp error when attempting to add to a L1_MBP book type (now raises RuntimeError rather than panicking)
• Fixed Interactive Brokers connection error logging (#1524), thanks @benjaminsingleton
• Fixed SimulationModuleConfig location and missing re-export from config subpackage
• Fixed logging StdoutWriter from also writing error logs (writers were duplicating error logs)
• Fixed BinanceWebSocketClient to new specification which requires responding to pings with a pong containing the pings payload
• Fixed Binance Futures AccountBalance calculations based on wallet and available balance
• Fixed ExecAlgorithm circular import issue for installed wheels (importing from execution.algorithm was a circular import)

NautilusTrader 1.188.0 Beta

NautilusTrader 1.188.0 Beta

Released on 25th February 2024 (UTC).

Enhancements

• Added FuturesSpread instrument type
• Added OptionsSpread instrument type
• Added InstrumentClass.FUTURE_SPREAD
• Added InstrumentClass.OPTION_SPREAD
• Added managed parameter to subscribe_order_book_deltas, default true to retain current behavior (if false then the data engine will not automatically manage a book)
• Added managed parameter to subscribe_order_book_snapshots, default true to retain current behavior (if false then the data engine will not automatically manage a book)
• Added additional validations for OrderMatchingEngine (will now reject orders with incorrect price or quantity precisions)
• Removed interval_ms 20 millisecond limitation for subscribe_order_book_snapshots (i.e. just needs to be positive), although we recommend you consider subscribing to deltas below 100 milliseconds
• Ported LiveClock and LiveTimer implementations to Rust
• Implemented OrderBookDeltas pickling
• Implemented AverageTrueRange in Rust, thanks @rsmb7z

Breaking Changes

• Changed TradeId value maximum length to 36 characters (will raise a ValueError if value exceeds the maximum)

Fixes

• Fixed TradeId memory leak due assigning unique values to the Ustr global string cache (which are never freed for the lifetime of the program)
• Fixed TradeTick size precision for pyo3 conversion (size precision was incorrectly price precision)
• Fixed RiskEngine cash value check when selling (would previously divide quantity by price which is too much), thanks for reporting@AnthonyVince
• Fixed FOK time in force behavior (allows fills beyond the top level, will cancel if cannot fill full size)
• Fixed IOC time in force behavior (allows fills beyond the top level, will cancel any remaining after all fills are applied)
• Fixed LiveClock timer behavior for small intervals causing next time to be less than now (timer then would not run)
• Fixed log level filtering for log_level_file (bug introduced in v1.187.0), thanks @twitu
• Fixed logging print_config config option (was not being passed through to the logging system)
• Fixed logging timestamps for backtesting (static clock was not being incrementally set to individual TimeEvent timestamps)
• Fixed account balance updates (fills from zero quantity NETTING positions will generate account balance updates)
• Fixed MessageBus publishable types collection type (needed to be tuple not set)
• Fixed Controller registration of components to ensure all active clocks are iterated correctly during backtests
• Fixed Equity short selling for CASH accounts (will now reject)
• Fixed ActorFactory.create JSON encoding (was missing the encoding hook)
• Fixed ImportableConfig.create JSON encoding (was missing the encoding hook)
• Fixed ImportableStrategyConfig.create JSON encoding (was missing the encoding hook)
• Fixed ExecAlgorithmFactory.create JSON encoding (was missing the encoding hook)
• Fixed ControllerConfig base class and docstring
• Fixed Interactive Brokers historical bar data bug, thanks @benjaminsingleton
• Fixed persistence freeze_dict function to handle fs_storage_options, thanks @dimitar-petrov

NautilusTrader 1.187.0 Beta

NautilusTrader 1.187.0 Beta

Released on 9th February 2024 (UTC).

Enhancements

• Refined logging system module and writers in Rust, thanks @ayush-sb and @twitu
• Improved Interactive Brokers adapter symbology and parsing with a strict_symbology option, thanks @rsmb7z and @fhill2

Breaking Changes

• Reorganized configuration objects (separated into a config module per subpackage, with re-exports from nautilus_trader.config)

Fixes

• Fixed BacktestEngine and Trader disposal (now properly releasing resources), thanks for reporting @davidsblom
• Fixed circular import issues from configuration objects, thanks for reporting @cuberone
• Fixed unnecessary creation of log files when file logging off

NautilusTrader 1.186.0 Beta

NautilusTrader 1.186.0 Beta

Released on 2nd February 2024 (UTC).

Enhancements

None

Breaking Changes

None

Fixes

• Fixed Interactive Brokers get account positions bug (#1475), thanks @benjaminsingleton
• Fixed TimeBarAggregator handling of interval types on build
• Fixed BinanceSpotExecutionClient non-existent method name, thanks @sunlei
• Fixed unused psutil import, thanks @sunlei

NautilusTrader 1.185.0 Beta

NautilusTrader 1.185.0 Beta

Released on 26th January 2024 (UTC).

Enhancements

• Add warning log when bypass_logging is set true for a LIVE context
• Improved register_serializable object to also add type to internal _EXTERNAL_PUBLIHSABLE_TYPES
• Improved Interactive Brokers expiration contract parsing, thanks @fhill2

Breaking Changes

• Changed StreamingConfig.include_types type from tuple[str] to list[type] (better alignment with other type filters)
• Consolidated clock module into component module (reduce binary wheel size)
• Consolidated logging module into component module (reduce binary wheel size)

Fixes

• Fixed Arrow serialization of OrderUpdated (trigger_price type was incorrect), thanks @benjaminsingleton
• Fixed StreamingConfig.include_types behavior (was not being honored for instrument writers), thanks for reporting @doublier1
• Fixed ImportableStrategyConfig type assignment in StrategyFactory (#1470), thanks @rsmb7z