public async Task <StockScore> GetBidAndAskScore(ViewStock stock)
{
var score = new StockScore();
var perfectScore = _settingRepository.GetSettingValue <decimal>(SettingNames.Score_AskAndBid);
var askAndBids = await _investagramsApiService.GetAskAndBidByStockId(stock.StockInfo.StockId);
var buyers = askAndBids.Buyers.OrderByDescending(x => x.Volume).ToList();
var sellers = askAndBids.Sellers.OrderByDescending(x => x.Volume).ToList();
//Nobody wants to sell because there is a breakout.
//There must be some good news with this stock or this is being hyped
if (buyers.Count > 0 && sellers.Count == 0)
{
score.AddReason(perfectScore, "No one is selling the stock", isSignificant: true);
}
else if (buyers.Count == 0 && sellers.Count > 0)
{
//ideally this shouldn't happen
score.AddReason(perfectScore, "No one is buying the stock", StockTrend.Bearish, true);
}
else
{
var highestVolumeOfBuyers = buyers.Any()? buyers.First() : new Buyer();
var highestVolumeOfSellers = sellers.Any()? sellers.First() : new Seller();
//My Own metrics.
//Inverse law of supply and demand
//if sellers is greater than the buyers then it must be going up. (must be backed up with volume)
if (highestVolumeOfSellers.Volume > highestVolumeOfBuyers.Volume)
{
var percentage = (highestVolumeOfSellers.Volume - highestVolumeOfBuyers.Volume) / highestVolumeOfSellers.Volume;
var reason = $"Sellers are {percentage * 100}% higher than the buyers";
//if sellers are 15-30% higher than buyers give half score
if (percentage >= 0.15m && percentage <= 0.3m)
{
score.AddReason(perfectScore / 2, reason);
}
//if sellers are 50-30% higher than the buyers give the perfect score
else if (percentage >= 0.3m)
{
score.AddReason(perfectScore, reason);
}
}
}
return(score);
}
