A handy Yahoo! Finance api wrapper, based on .NET Standard 2.0
- Get quotes
- Get historical data
- Get dividend data
- Get stock split data
This library is intended for personal use only, any improper use of this library is not recommended.
For traditional .NET framework user, if you find a "System.Runtime.Serialization.Primitives" missing exception is thrown when using this library, you have to install the missing package manually as nuget does not auto install this reference for you (Bugged?)
As Yahoo has terminated their csv quote service, the depending GetAsync method is no longer usable. Please consider using QueryAsync method instead.
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Changed approach for getting auth cookie
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Added cookie authorization to all v7 APIs
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Upgraded all Nuget packages to most recent version and updated all code to work
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Updated tests project to .NET 6
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Added QueryAsync as a replacement of the original GetAsync method
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Added Fields for QueryAsync method
- GetAsync method is obsoleted since Yahoo has terminated their csv quote service
- Added QueryAsync as a replacement of the original GetAsync method
- Added Fields for QueryAsync method
- Removed error-proned timezone support
- All api call now reads and returns datetime in EST instead of local timezone.
- Removed ascending, leaveZeroWhenInvalid parameter in historical api call.
- IgnoreEmptyRows property in replacement with the original leaveZeroIfInvalid parameter.
- Performance boost on async calls.
- .NET Core 2.0
- .NET framework 4.6.1 or above
- Xamarin.iOS
- Xamarin.Android
- Universal Windows Platform
You can find the package through Nuget
PM> Install-Package YahooFinanceApi
using YahooFinanceApi;
// You could query multiple symbols with multiple fields through the following steps:
var securities = await Yahoo.Symbols("AAPL", "GOOG").Fields(Field.Symbol, Field.RegularMarketPrice, Field.FiftyTwoWeekHigh).QueryAsync();
var aapl = securities["AAPL"];
var price = aapl[Field.RegularMarketPrice] // or, you could use aapl.RegularMarketPrice directly for typed-value
|||||| |--|--|--|--|--|--| | Language | QuoteType | QuoteSourceName | Currency | MarketState | RegularMarketPrice | | RegularMarketTime | RegularMarketChange | RegularMarketOpen | RegularMarketDayHigh | RegularMarketDayLow | RegularMarketVolume | | ShortName | FiftyTwoWeekHighChange | FiftyTwoWeekHighChangePercent | FiftyTwoWeekLow | FiftyTwoWeekHigh | DividendDate | | EarningsTimestamp | EarningsTimestampStart | EarningsTimestampEnd | TrailingAnnualDividendRate | TrailingPE | TrailingAnnualDividendYield | | EpsTrailingTwelveMonths | EpsForward | SharesOutstanding | BookValue | RegularMarketChangePercent | RegularMarketPreviousClose | | Bid | Ask | BidSize | AskSize | MessageBoardId | FullExchangeName | | LongName | FinancialCurrency | AverageDailyVolume3Month | AverageDailyVolume10Day | FiftyTwoWeekLowChange | FiftyTwoWeekLowChangePercent | | TwoHundredDayAverageChangePercent | MarketCap | ForwardPE | PriceToBook | SourceInterval | ExchangeTimezoneName | | ExchangeTimezoneShortName | Market | Exchange | ExchangeDataDelayedBy | PriceHint | FiftyDayAverage | | FiftyDayAverageChange | FiftyDayAverageChangePercent | TwoHundredDayAverage | TwoHundredDayAverageChange | Tradeable | GmtOffSetMilliseconds | | Symbol |||||
// Sometimes, yahoo returns broken rows for historical calls, you could decide if these invalid rows is ignored or not by the following statement
Yahoo.IgnoreEmptyRows = true;
// You should be able to query data from various markets including US, HK, TW
// The startTime & endTime here defaults to EST timezone
var history = await Yahoo.GetHistoricalAsync("AAPL", new DateTime(2016, 1, 1), new DateTime(2016, 7, 1), Period.Daily);
foreach (var candle in history)
{
Console.WriteLine($"DateTime: {candle.DateTime}, Open: {candle.Open}, High: {candle.High}, Low: {candle.Low}, Close: {candle.Close}, Volume: {candle.Volume}, AdjustedClose: {candle.AdjustedClose}");
}
// You should be able to query data from various markets including US, HK, TW
var dividends = await Yahoo.GetDividendsAsync("AAPL", new DateTime(2016, 1, 1), new DateTime(2016, 7, 1));
foreach (var candle in dividends)
{
Console.WriteLine($"DateTime: {candle.DateTime}, Dividend: {candle.Dividend}");
}
var splits = await Yahoo.GetSplitsAsync("AAPL", new DateTime(2014, 6, 8), new DateTime(2014, 6, 10));
foreach (var s in splits)
{
Console.WriteLine($"DateTime: {s.DateTime}, AfterSplit: {s.AfterSplit}, BeforeSplit: {s.BeforeSplit}");
}