YahooQuotesApi  

Yahoo Finance API to retrieve quote snapshots, and quote, dividend and split history

• asynchronous
• supports .NET Standard 2.0
• dependencies: NodaTime, Flurl, CsvHelper
• simple and intuitive API
• tested

using NodaTime;
using YahooQuotesApi;

Quote Snapshots

YahooSnapshot Snapshot = new YahooSnapshot();

Security? security = await Snapshot.GetAsync("IBM");

if (security == null)
    throw new Exception("Unknown symbol: IBM");

Assert.True(security.RegularMarketPrice > 0);
Assert.NotNull(security.LongName);

Price History

YahooHistory History = new YahooHistory();

List<PriceTick>? prices = await History.FromDays(90).GetPricesAsync("IBM");

if (prices == null)
    throw new Exception("Unknown symbol: IBM");

Assert.True(prices[0].Close > 10);

Dividend History

YahooHistory History = new YahooHistory();

List<DividendTick>? dividends = await History.GetDividendsAsync("IBM");

if (dividends == null)
    throw new Exception("Unknown symbol: IBM");

Assert.True(dividends[0].Dividend > 0);

Split History

YahooHistory History = new YahooHistory();

List<SplitTick>? splits = await History.GetSplitsAsync("IBM");

if (splits == null)
    throw new Exception("Unknown symbol: IBM");

Assert.True(splits[0].BeforeSplit < splits[0].AfterSplit);

Currency Rate History (https://www.bankofengland.co.uk)

CurrencyHistory CurrencyHistory = new CurrencyHistory();

string currency     = "EUR";
string baseCurrency = "USD";

List<RateTick>? rates = await CurrencyHistory
    .FromDate(new LocalDate(2010,1,1))
    .GetRatesAsync(currency, baseCurrency);

if (rates == null)
    throw new Exception($"Unsupported currency: {symbol}/{baseCurrency}");

Assert.True(rates[0].Rate > 0);