wehub-resource-sync
49 lines
1.9 KiB
Python
49 lines
1.9 KiB
Python
# QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
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# Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from AlgorithmImports import *
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class StatelessCoarseUniverseSelectionBenchmark(QCAlgorithm):
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def initialize(self):
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self.universe_settings.resolution = Resolution.DAILY
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self.set_start_date(2017, 1, 1)
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self.set_end_date(2019, 1, 1)
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self.set_cash(50000)
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self.add_universe(self.coarse_selection_function)
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self.number_of_symbols = 250
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# sort the data by daily dollar volume and take the top 'NumberOfSymbols'
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def coarse_selection_function(self, coarse):
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selected = [x for x in coarse if (x.has_fundamental_data)]
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# sort descending by daily dollar volume
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sorted_by_dollar_volume = sorted(selected, key=lambda x: x.dollar_volume, reverse=True)
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# return the symbol objects of the top entries from our sorted collection
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return [ x.symbol for x in sorted_by_dollar_volume[:self.number_of_symbols] ]
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def on_securities_changed(self, changes):
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# if we have no changes, do nothing
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if changes is None: return
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# liquidate removed securities
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for security in changes.removed_securities:
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if security.invested:
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self.liquidate(security.symbol)
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for security in changes.added_securities:
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self.set_holdings(security.symbol, 0.001)
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