YahooFinance.NET

Download realtime and historical end of day stock data and historical dividend data via the Yahoo Finance API

Install via NUGET

Install-Package YahooFinance.NET

Usage

using YahooFinance.NET;

string cookie = "YOUR_COOKIE";
string crumb = "YOUR_CRUMB";


string exchange = "ASX";
string symbol = "AFI";

YahooFinanceClient yahooFinance = new YahooFinanceClient(cookie, crumb);
string yahooStockCode = yahooFinance.GetYahooStockCode(exchange, symbol);
List<YahooHistoricalPriceData> yahooPriceHistory = yahooFinance.GetDailyHistoricalPriceData(yahooStockCode);
List<YahooHistoricalDividendData> yahooDividendHistory = yahooFinance.GetHistoricalDividendData(yahooStockCode);
YahooRealTimeData yahooRealTimeData = yahooFinance.GetRealTimeData(yahooStockCode);

To get a cookie/crumb

First try this script

To get a cookie manually

1. Go to the Yahoo finance URL and search for a stock. eg. https://finance.yahoo.com/quote/AFI.AX/history?p=AFI.AX
2. In Chrome open Settings > Show advanced settings... > Privacy > Content Settings... > All cookies and site data...
3. Find the site yahoo.com and the cookie name sould be 'B'
4. Copy the 'Content'
5. This is your cookie

To get a crumb manually

1. Go to the Yahoo finance URL and search for a stock. eg. https://finance.yahoo.com/quote/AFI.AX/history?p=AFI.AX
2. Right click on 'Download Data' and copy the link address
3. Paste the link somewhere and your crumb will be at the and after the &crumb= eg. https://query1.finance.yahoo.com/v7/finance/download/AFI.AX?period1=1493432127&period2=1496024127&interval=1d&events=history&crumb=YOURCRUMB

Building and testing the project via commandline

1. Open up a Powershell prompt and execute

PS> .\build.ps1

Deploying the package to NuGet

1. Set the NuGet API key via the commandline if its not already set

nuget.exe setApiKey <API-Key> -Source https://www.nuget.org/api/v2/package

2. Increment the AssemblyVersion in AssemblyInfo.cs of the YahooFinance.NET project
3. Open up a Powershell prompt and execute

PS> .\build.ps1 -Target Deploy