Uses the masterDATA.com list of ETFs and ETNs to update previously defined instruments.
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character vector of Symbols of ETFs
update_instruments.md is an alias.
MasterDATA classifies each ETF into one of six Fund.Types. From their website:
US Equity ETF: All constituents trade on a US exchange. Both ProShares and Rydex sponsor ETFs with the objective of achieving the performance (or a multiple of the performance) of several major US stock indexes. These ETFs currently are included in this category despite the fact that their constituent lists are generally not limited to US stocks.
Global Equity ETF: One or more of the constituents do not trade on a US Exchange.
Fixed Income ETF: The constituent list contains government and / or corporate debt instruments. ETFs with this classification will not be considered for inclusion in MasterDATA's index / ETF compilation list.
Commodity Based ETF: This classification of ETF has no constituents but is structured to reflect the valuation of a commodity such as gold, silver, oil or interest rates. ETFs with this classification will not be considered for inclusion in MasterDATA's index / ETF compilation list.
Exchange Traded Notes: A type of unsecured, unsubordinated debt security that was first issued by Barclays Bank PLC. The purpose of ETNs is to create a type of security that combines both the aspects of bonds and exchange traded funds (ETF). Similar to ETFs, ETNs are traded on a major exchange.
called for side-effect. Each ETF that is updated will be given instrument attributes of “Name” and “Fund.Type”
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