/// <summary>
/// Gets the fundamental data for the share with the supplied symbol.
/// </summary>
/// <param name="symbol">The share symbol.</param>
/// <returns>The share's fundamental data.</returns>
public ShareFundamentals GetShareFundamentals(string symbol)
{
if (string.IsNullOrWhiteSpace(symbol))
{
throw new ArgumentException($"Argument '{nameof(symbol)}' is required.");
}
// Get the share information.
ShareInfo info = _shareInfoProvider.GetShareInfo(symbol);
if (info == null)
{
return(null);
}
var fundamentals = new ShareFundamentals(info.Symbol, info.Name, info.Industry);
Task[] tasks = new[]
{
GetKeyStatistics(symbol, fundamentals),
GetPriceHistory(symbol, fundamentals)
};
Task.WaitAll(tasks);
// PE Ratio not provided by Yahoo. We have to calculate it manually.
if (fundamentals.PreviousClose.HasValue && fundamentals.EarningsShare.HasValue)
{
fundamentals.PERatio = Math.Round(fundamentals.PreviousClose.Value / fundamentals.EarningsShare.Value, 2);
}
return(fundamentals);
}
private async Task GetPriceHistory(string symbol, ShareFundamentals fundamentals)
{
// Format the request URL.
var requestUrl = string.Format(PriceHistoryUrl, symbol);
// Download the JSON document.
HttpResponseMessage response = await _client.GetAsync(requestUrl);
if (response.StatusCode == HttpStatusCode.NotFound)
{
return;
}
// Read and parse the JSON document.
string responseContent = await response.Content.ReadAsStringAsync();
JObject results = JObject.Parse(responseContent);
JToken result = results["chart"]["result"][0];
if (result["timestamp"] == null)
{
return;
}
long[] volume = result["indicators"]["quote"][0]["volume"].Values <long?>().Where(v => v.HasValue).Select(v => v.Value).ToArray();
if (volume.Any())
{
fundamentals.AverageDailyVolume = (long)Math.Round(volume.Average());
}
decimal[] close = result["indicators"]["quote"][0]["close"].Values <decimal?>().Where(v => v.HasValue).Select(v => v.Value).Reverse().ToArray();
if (close.Any())
{
// Get the numbers of decimals to round to.
// Note that the previous close is the first price in the array because it has been reversed.
int decimals = _marketInfoProvider.GetNumberOfDecimals(close.Last());
fundamentals.PreviousClose = Math.Round(close.First(), decimals);
fundamentals.Low52Weeks = Math.Round(close.Min(), decimals);
fundamentals.High52Weeks = Math.Round(close.Max(), decimals);
fundamentals.MovingAverage50Days = Math.Round(close.Take(50).Average(), decimals);
fundamentals.MovingAverage200Days = Math.Round(close.Take(200).Average(), decimals);
}
}
private async Task GetKeyStatistics(string symbol, ShareFundamentals fundamentals)
{
// Format the request URL.
var requestUrl = string.Format(KeyStatisticsUrl, symbol);
// Download the JSON document.
HttpResponseMessage response = await _client.GetAsync(requestUrl);
if (response.StatusCode == HttpStatusCode.NotFound)
{
return;
}
// Read and parse the JSON document.
string responseContent = await response.Content.ReadAsStringAsync();
JObject results = JObject.Parse(responseContent);
JToken result = results["quoteSummary"]["result"][0];
fundamentals.MarketCap = ReadValue <long?>(result, "defaultKeyStatistics", "enterpriseValue");
fundamentals.Change52Weeks = ReadValue <decimal?>(result, "defaultKeyStatistics", "52WeekChange");
fundamentals.BookValue = ReadValue <decimal?>(result, "defaultKeyStatistics", "bookValue");
fundamentals.PriceBook = ReadValue <decimal?>(result, "defaultKeyStatistics", "priceToBook");
fundamentals.TrailingEps = ReadValue <decimal?>(result, "defaultKeyStatistics", "trailingEps");
fundamentals.ForwardEps = ReadValue <decimal?>(result, "defaultKeyStatistics", "forwardEps");
fundamentals.EarningsShare = ReadValue <decimal?>(result, "financialData", "revenuePerShare");
fundamentals.TotalRevenue = ReadValue <long?>(result, "financialData", "totalRevenue");
fundamentals.EarningsGrowth = ReadValue <decimal?>(result, "financialData", "earningsGrowth");
fundamentals.RevenueGrowth = ReadValue <decimal?>(result, "financialData", "revenueGrowth");
fundamentals.TargetHighPrice = ReadValue <decimal?>(result, "financialData", "targetHighPrice");
fundamentals.TargetLowPrice = ReadValue <decimal?>(result, "financialData", "targetLowPrice");
fundamentals.TargetMeanPrice = ReadValue <decimal?>(result, "financialData", "targetMeanPrice");
fundamentals.TargetMedianPrice = ReadValue <decimal?>(result, "financialData", "targetMedianPrice");
fundamentals.AnalystRecommendation = ReadValue <string>(result, "financialData", "recommendationKey");
fundamentals.NumberOfAnalystOpinions = ReadValue <int?>(result, "financialData", "numberOfAnalystOpinions");
fundamentals.ExDividendDate = ReadValue <DateTime?>(result, "calendarEvents", "exDividendDate");
}