如何通过DSS C# API 获取指数的成分股信息(Index Constituents)
我想要得到某个指数的所有成分股信息,比如指数 "Austria 20" (RIC .ATX)。我需要先有这个指数的Chain RIC是吧,那如何从RIC ".ATX" 得到它的Chain RIC 呢?
当有了Chain RIC, 我应该使用 DSS C# API里面的哪些方法来获取它的成分股信息呢(最好还有股份数(number of shares)的信息)?
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Best Answer
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您好,RIC 的Chain RIC 通常是前面加0#, 比如这里.ATX就是 0#.ATX, 获取成分股的基本信息,可以发送一个/RestApi/v1/Search/HistoricalChainResolution 的reqeust, body 如下
{
"Request": {
"ChainRics": [
"0#.ATX"
],
"Range": {
"Start": "2022-03-03T00:00:00.000Z",
"End": "2022-03-03T00:00:00.000Z"
}
}
}如果是.NET SDK, 代码这样
var dateRange = DateTimeRange.Create(
new DateTimeOffset(2008, 01, 01, 0, 0, 0, TimeSpan.Zero),
new DateTimeOffset(2016, 01, 01, 0, 0, 0, TimeSpan.Zero));
var request = new HistoricalChainResolutionRequest
{
ChainRics = new[] { "0#HO:" },
Range = dateRange
};
// Resolve constituents
var results = SearchContext.HistoricalChainResolution(request);之后您就可以针对每一个成分股发送extraction request 去获取您想要的信息,比如您提到的股份数信息。
您可以通过链接Refinitiv DataScope Select Data Content Guide 了解更多DSS Content相关信息。对于您提到的股份数(number of shares), 我觉得可能Terms and Conditions request 可以实现,如果是这样请参考.Net SDK Tutorial 8: On Demand: Terms & Conditions 具体实现。如果您刚刚开始使用DSS .NET SDK, 我也建议您看一下 Introductory Tutorials-> Tutorials Introduction 和 .NET-> Connecting to the DSS Server。
希望这些信息对您有帮助.0
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