Пример #1
0
        /// <summary>
        /// Initialize the API using the config.json file.
        /// </summary>
        public virtual void Initialize(int userId, string token)
        {
            _connection = new ApiConnection(userId, token);
            _marketHoursDatabase = MarketHoursDatabase.FromDataFolder();

            //Allow proper decoding of orders from the API.
            JsonConvert.DefaultSettings = () => new JsonSerializerSettings
            {
                Converters = { new OrderJsonConverter() }
            };
        }
 /// <summary>
 /// Initializes a new instance of the <see cref="UserDefinedUniverseSubscriptionEnumeratorFactory"/> class
 /// </summary>
 /// <param name="universe">The user defined universe</param>
 /// <param name="marketHoursDatabase">The market hours database</param>
 public UserDefinedUniverseSubscriptionEnumeratorFactory(UserDefinedUniverse universe, MarketHoursDatabase marketHoursDatabase)
 {
     _universe = universe;
     _marketHoursDatabase = marketHoursDatabase;
 }
Пример #3
0
        /// <summary>
        /// Ensures that we have a data feed to convert this currency into the base currency.
        /// This will add a subscription at the lowest resolution if one is not found.
        /// </summary>
        /// <param name="securities">The security manager</param>
        /// <param name="subscriptions">The subscription manager used for searching and adding subscriptions</param>
        /// <param name="marketHoursDatabase">A security exchange hours provider instance used to resolve exchange hours for new subscriptions</param>
        /// <returns>Returns the added currency security if needed, otherwise null</returns>
        public Security EnsureCurrencyDataFeed(SecurityManager securities, SubscriptionManager subscriptions, MarketHoursDatabase marketHoursDatabase)
        {
            if (Symbol == CashBook.AccountCurrency)
            {
                SecuritySymbol = QuantConnect.Symbol.Empty;
                _isBaseCurrency = true;
                ConversionRate = 1.0m;
                return null;
            }

            if (subscriptions.Count == 0)
            {
                throw new InvalidOperationException("Unable to add cash when no subscriptions are present. Please add subscriptions in the Initialize() method.");
            }

            // we require a subscription that converts this into the base currency
            string normal = Symbol + CashBook.AccountCurrency;
            string invert = CashBook.AccountCurrency + Symbol;
            foreach (var config in subscriptions.Subscriptions.Where(config => config.SecurityType == SecurityType.Forex))
            {
                if (config.Symbol.Value == normal)
                {
                    SecuritySymbol = config.Symbol;
                    return null;
                }
                if (config.Symbol.Value == invert)
                {
                    SecuritySymbol = config.Symbol;
                    _invertRealTimePrice = true;
                    return null;
                }
            }

            // get the market from the first Forex subscription
            string market = (from config in subscriptions.Subscriptions
                             where config.SecurityType == SecurityType.Forex
                             select config.Market).FirstOrDefault() ?? Market.FXCM;

            // if we've made it here we didn't find a subscription, so we'll need to add one
            var currencyPairs = Forex.Forex.CurrencyPairs.Select(x => QuantConnect.Symbol.Create(x, SecurityType.Forex, market));
            var minimumResolution = subscriptions.Subscriptions.Select(x => x.Resolution).DefaultIfEmpty(Resolution.Minute).Min();
            var objectType = minimumResolution == Resolution.Tick ? typeof (Tick) : typeof (TradeBar);
            foreach (var symbol in currencyPairs)
            {
                if (symbol.Value == normal || symbol.Value == invert)
                {
                    _invertRealTimePrice = symbol.Value == invert;
                    var marketHoursDbEntry = marketHoursDatabase.GetEntry(market, symbol.Value, SecurityType.Forex);
                    var exchangeHours = marketHoursDbEntry.ExchangeHours;
                    // set this as an internal feed so that the data doesn't get sent into the algorithm's OnData events
                    var config = subscriptions.Add(objectType, symbol, minimumResolution, marketHoursDbEntry.DataTimeZone, exchangeHours.TimeZone, false, true, false, true);
                    var security = new Forex.Forex(exchangeHours, this, config);
                    SecuritySymbol = config.Symbol;
                    securities.Add(config.Symbol, security);
                    Log.Trace("Cash.EnsureCurrencyDataFeed(): Adding " + symbol.Value + " for cash " + Symbol + " currency feed");
                    return security;
                }
            }

            // if this still hasn't been set then it's an error condition
            throw new ArgumentException(string.Format("In order to maintain cash in {0} you are required to add a subscription for Forex pair {0}{1} or {1}{0}", Symbol, CashBook.AccountCurrency));
        }
Пример #4
0
        /// <summary>
        /// Returns an enumerator that defines when this user defined universe will be invoked
        /// </summary>
        /// <returns>An enumerator of DateTime that defines when this universe will be invoked</returns>
        public virtual IEnumerable<DateTime> GetTriggerTimes(DateTime startTimeUtc, DateTime endTimeUtc, MarketHoursDatabase marketHoursDatabase)
        {
            var exchangeHours = marketHoursDatabase.GetExchangeHours(Configuration);
            var localStartTime = startTimeUtc.ConvertFromUtc(exchangeHours.TimeZone);
            var localEndTime = endTimeUtc.ConvertFromUtc(exchangeHours.TimeZone);

            var first = true;
            foreach (var dateTime in LinqExtensions.Range(localStartTime, localEndTime, dt => dt + Interval))
            {
                if (first)
                {
                    yield return dateTime;
                    first = false;
                }
                if (exchangeHours.IsOpen(dateTime, dateTime + Interval, Configuration.ExtendedMarketHours))
                {
                    yield return dateTime;
                }
            }
        }
Пример #5
0
        /// <summary>
        /// Ensures that we have a data feed to convert this currency into the base currency.
        /// This will add a subscription at the lowest resolution if one is not found.
        /// </summary>
        /// <param name="securities">The security manager</param>
        /// <param name="subscriptions">The subscription manager used for searching and adding subscriptions</param>
        /// <param name="marketHoursDatabase">A security exchange hours provider instance used to resolve exchange hours for new subscriptions</param>
        /// <param name="symbolPropertiesDatabase">A symbol properties database instance</param>
        /// <param name="marketMap">The market map that decides which market the new security should be in</param>
        /// <param name="cashBook">The cash book - used for resolving quote currencies for created conversion securities</param>
        /// <returns>Returns the added currency security if needed, otherwise null</returns>
        public Security EnsureCurrencyDataFeed(SecurityManager securities, SubscriptionManager subscriptions, MarketHoursDatabase marketHoursDatabase, SymbolPropertiesDatabase symbolPropertiesDatabase, IReadOnlyDictionary<SecurityType, string> marketMap, CashBook cashBook)
        {
            if (Symbol == CashBook.AccountCurrency)
            {
                SecuritySymbol = QuantConnect.Symbol.Empty;
                _isBaseCurrency = true;
                ConversionRate = 1.0m;
                return null;
            }

            if (subscriptions.Count == 0)
            {
                throw new InvalidOperationException("Unable to add cash when no subscriptions are present. Please add subscriptions in the Initialize() method.");
            }

            // we require a subscription that converts this into the base currency
            string normal = Symbol + CashBook.AccountCurrency;
            string invert = CashBook.AccountCurrency + Symbol;
            foreach (var config in subscriptions.Subscriptions.Where(config => config.SecurityType == SecurityType.Forex || config.SecurityType == SecurityType.Cfd))
            {
                if (config.Symbol.Value == normal)
                {
                    SecuritySymbol = config.Symbol;
                    return null;
                }
                if (config.Symbol.Value == invert)
                {
                    SecuritySymbol = config.Symbol;
                    _invertRealTimePrice = true;
                    return null;
                }
            }
            // if we've made it here we didn't find a subscription, so we'll need to add one
            var currencyPairs = Currencies.CurrencyPairs.Select(x =>
            {
                // allow XAU or XAG to be used as quote currencies, but pairs including them are CFDs
                var securityType = Symbol.StartsWith("X") ? SecurityType.Cfd : SecurityType.Forex;
                var market = marketMap[securityType];
                return QuantConnect.Symbol.Create(x, securityType, market);
            });
            var minimumResolution = subscriptions.Subscriptions.Select(x => x.Resolution).DefaultIfEmpty(Resolution.Minute).Min();
            var objectType = minimumResolution == Resolution.Tick ? typeof (Tick) : typeof (TradeBar);
            foreach (var symbol in currencyPairs)
            {
                if (symbol.Value == normal || symbol.Value == invert)
                {
                    _invertRealTimePrice = symbol.Value == invert;
                    var marketHoursDbEntry = marketHoursDatabase.GetEntry(symbol.ID.Market, symbol.Value, symbol.ID.SecurityType);
                    var exchangeHours = marketHoursDbEntry.ExchangeHours;
                    // set this as an internal feed so that the data doesn't get sent into the algorithm's OnData events
                    var config = subscriptions.Add(objectType, symbol, minimumResolution, marketHoursDbEntry.DataTimeZone, exchangeHours.TimeZone, false, true, false, true);
                    SecuritySymbol = config.Symbol;

                    var securityType = symbol.ID.SecurityType;
                    Security security;
                    if (securityType == SecurityType.Cfd)
                    {
                        var symbolProperties = symbolPropertiesDatabase.GetSymbolProperties(symbol.ID.Market, symbol.Value, securityType);
                        Cash quoteCash;
                        if (!cashBook.TryGetValue(symbolProperties.QuoteCurrency, out quoteCash))
                        {
                            throw new Exception("Unable to resolve quote cash: " + symbolProperties.QuoteCurrency + ". This is required to add conversion feed: " + symbol.ToString());
                        }
                        security = new Cfd.Cfd(exchangeHours, quoteCash, config, symbolProperties);
                    }
                    else
                    {
                        security = new Forex.Forex(exchangeHours, this, config);
                    }
                    securities.Add(config.Symbol, security);
                    Log.Trace("Cash.EnsureCurrencyDataFeed(): Adding " + symbol.Value + " for cash " + Symbol + " currency feed");
                    return security;
                }
            }

            // if this still hasn't been set then it's an error condition
            throw new ArgumentException(string.Format("In order to maintain cash in {0} you are required to add a subscription for Forex pair {0}{1} or {1}{0}", Symbol, CashBook.AccountCurrency));
        }
Пример #6
0
 /// <summary>
 /// Creates and configures a security for the specified symbol
 /// </summary>
 /// <param name="symbol">The symbol of the security to be created</param>
 /// <param name="algorithm">The algorithm instance</param>
 /// <param name="marketHoursDatabase">The market hours database</param>
 /// <param name="symbolPropertiesDatabase">The symbol properties database</param>
 /// <returns>The newly initialized security object</returns>
 public override Security CreateSecurity(Symbol symbol, IAlgorithm algorithm, MarketHoursDatabase marketHoursDatabase, SymbolPropertiesDatabase symbolPropertiesDatabase)
 {
     return Universe.CreateSecurity(symbol, algorithm, marketHoursDatabase, symbolPropertiesDatabase);
 }
Пример #7
0
 /// <summary>
 /// Creates and configures a security for the specified symbol
 /// </summary>
 /// <param name="symbol">The symbol of the security to be created</param>
 /// <param name="algorithm">The algorithm instance</param>
 /// <param name="marketHoursDatabase">The market hours database</param>
 /// <param name="symbolPropertiesDatabase">The symbol properties database</param>
 /// <returns>The newly initialized security object</returns>
 public override Security CreateSecurity(Symbol symbol, IAlgorithm algorithm, MarketHoursDatabase marketHoursDatabase, SymbolPropertiesDatabase symbolPropertiesDatabase)
 {
     // set the underlying security and pricing model from the canonical security
     var option = (Option)base.CreateSecurity(symbol, algorithm, marketHoursDatabase, symbolPropertiesDatabase);
     option.Underlying = _option.Underlying;
     option.PriceModel = _option.PriceModel;
     return option;
 }
Пример #8
0
 /// <summary>
 /// Gets the instance of the <see cref="MarketHoursDatabase"/> class produced by reading in the market hours
 /// data found in /Data/market-hours/
 /// </summary>
 /// <returns>A <see cref="MarketHoursDatabase"/> class that represents the data in the market-hours folder</returns>
 public static MarketHoursDatabase FromDataFolder()
 {
     lock (DataFolderMarketHoursDatabaseLock)
     {
         if (_dataFolderMarketHoursDatabase == null)
         {
             var path = Path.Combine(Constants.DataFolder, "market-hours", "market-hours-database.json");
             _dataFolderMarketHoursDatabase = FromFile(path);
         }
     }
     return _dataFolderMarketHoursDatabase;
 }
Пример #9
0
        /// <summary>
        /// Checks the current subscriptions and adds necessary currency pair feeds to provide real time conversion data
        /// </summary>
        /// <param name="securities">The SecurityManager for the algorithm</param>
        /// <param name="subscriptions">The SubscriptionManager for the algorithm</param>
        /// <param name="marketHoursDatabase">A security exchange hours provider instance used to resolve exchange hours for new subscriptions</param>
        /// <param name="symbolPropertiesDatabase">A symbol properties database instance</param>
        /// <param name="marketMap">The market map that decides which market the new security should be in</param>
        /// <returns>Returns a list of added currency securities</returns>
        public List <Security> EnsureCurrencyDataFeeds(SecurityManager securities, SubscriptionManager subscriptions, MarketHoursDatabase marketHoursDatabase, SymbolPropertiesDatabase symbolPropertiesDatabase, IReadOnlyDictionary <SecurityType, string> marketMap, SecurityChanges changes)
        {
            var addedSecurities = new List <Security>();

            foreach (var kvp in _currencies)
            {
                var cash = kvp.Value;

                var security = cash.EnsureCurrencyDataFeed(securities, subscriptions, marketHoursDatabase, symbolPropertiesDatabase, marketMap, this, changes);
                if (security != null)
                {
                    addedSecurities.Add(security);
                }
            }
            return(addedSecurities);
        }
Пример #10
0
 /// <summary>
 /// Checks the current subscriptions and adds necessary currency pair feeds to provide real time conversion data
 /// </summary>
 /// <param name="securities">The SecurityManager for the algorithm</param>
 /// <param name="subscriptions">The SubscriptionManager for the algorithm</param>
 /// <param name="marketHoursDatabase">A security exchange hours provider instance used to resolve exchange hours for new subscriptions</param>
 public void EnsureCurrencyDataFeeds(SecurityManager securities, SubscriptionManager subscriptions, MarketHoursDatabase marketHoursDatabase)
 {
     foreach (var cash in _currencies.Values)
     {
         cash.EnsureCurrencyDataFeed(securities, subscriptions, marketHoursDatabase);
     }
 }
Пример #11
0
        /// <summary>
        /// Ensures that we have a data feed to convert this currency into the base currency.
        /// This will add a subscription at the lowest resolution if one is not found.
        /// </summary>
        /// <param name="securities">The security manager</param>
        /// <param name="subscriptions">The subscription manager used for searching and adding subscriptions</param>
        /// <param name="marketHoursDatabase">A security exchange hours provider instance used to resolve exchange hours for new subscriptions</param>
        /// <param name="symbolPropertiesDatabase">A symbol properties database instance</param>
        /// <param name="marketMap">The market map that decides which market the new security should be in</param>
        /// <param name="cashBook">The cash book - used for resolving quote currencies for created conversion securities</param>
        /// <returns>Returns the added currency security if needed, otherwise null</returns>
        public Security EnsureCurrencyDataFeed(SecurityManager securities, SubscriptionManager subscriptions, MarketHoursDatabase marketHoursDatabase, SymbolPropertiesDatabase symbolPropertiesDatabase, IReadOnlyDictionary <SecurityType, string> marketMap, CashBook cashBook)
        {
            if (Symbol == CashBook.AccountCurrency)
            {
                SecuritySymbol  = QuantConnect.Symbol.Empty;
                _isBaseCurrency = true;
                ConversionRate  = 1.0m;
                return(null);
            }

            if (subscriptions.Count == 0)
            {
                throw new InvalidOperationException("Unable to add cash when no subscriptions are present. Please add subscriptions in the Initialize() method.");
            }

            // we require a subscription that converts this into the base currency
            string normal = Symbol + CashBook.AccountCurrency;
            string invert = CashBook.AccountCurrency + Symbol;

            foreach (var config in subscriptions.Subscriptions.Where(config => config.SecurityType == SecurityType.Forex || config.SecurityType == SecurityType.Cfd))
            {
                if (config.Symbol.Value == normal)
                {
                    SecuritySymbol = config.Symbol;
                    return(null);
                }
                if (config.Symbol.Value == invert)
                {
                    SecuritySymbol       = config.Symbol;
                    _invertRealTimePrice = true;
                    return(null);
                }
            }
            // if we've made it here we didn't find a subscription, so we'll need to add one
            var currencyPairs = Currencies.CurrencyPairs.Select(x =>
            {
                // allow XAU or XAG to be used as quote currencies, but pairs including them are CFDs
                var securityType = Symbol.StartsWith("X") ? SecurityType.Cfd : SecurityType.Forex;
                var market       = marketMap[securityType];
                return(QuantConnect.Symbol.Create(x, securityType, market));
            });
            var minimumResolution = subscriptions.Subscriptions.Select(x => x.Resolution).DefaultIfEmpty(Resolution.Minute).Min();
            var objectType        = minimumResolution == Resolution.Tick ? typeof(Tick) : typeof(TradeBar);

            foreach (var symbol in currencyPairs)
            {
                if (symbol.Value == normal || symbol.Value == invert)
                {
                    _invertRealTimePrice = symbol.Value == invert;
                    var  securityType     = symbol.ID.SecurityType;
                    var  symbolProperties = symbolPropertiesDatabase.GetSymbolProperties(symbol.ID.Market, symbol.Value, securityType, Symbol);
                    Cash quoteCash;
                    if (!cashBook.TryGetValue(symbolProperties.QuoteCurrency, out quoteCash))
                    {
                        throw new Exception("Unable to resolve quote cash: " + symbolProperties.QuoteCurrency + ". This is required to add conversion feed: " + symbol.ToString());
                    }
                    var marketHoursDbEntry = marketHoursDatabase.GetEntry(symbol.ID.Market, symbol.Value, symbol.ID.SecurityType);
                    var exchangeHours      = marketHoursDbEntry.ExchangeHours;
                    // set this as an internal feed so that the data doesn't get sent into the algorithm's OnData events
                    var config = subscriptions.Add(objectType, symbol, minimumResolution, marketHoursDbEntry.DataTimeZone, exchangeHours.TimeZone, false, true, false, true);
                    SecuritySymbol = config.Symbol;

                    Security security;
                    if (securityType == SecurityType.Cfd)
                    {
                        security = new Cfd.Cfd(exchangeHours, quoteCash, config, symbolProperties);
                    }
                    else
                    {
                        security = new Forex.Forex(exchangeHours, this, config, symbolProperties);
                    }
                    securities.Add(config.Symbol, security);
                    Log.Trace("Cash.EnsureCurrencyDataFeed(): Adding " + symbol.Value + " for cash " + Symbol + " currency feed");
                    return(security);
                }
            }

            // if this still hasn't been set then it's an error condition
            throw new ArgumentException(string.Format("In order to maintain cash in {0} you are required to add a subscription for Forex pair {0}{1} or {1}{0}", Symbol, CashBook.AccountCurrency));
        }
Пример #12
0
        /// <summary>
        /// Ensures that we have a data feed to convert this currency into the base currency.
        /// This will add a subscription at the lowest resolution if one is not found.
        /// </summary>
        /// <param name="securities">The security manager</param>
        /// <param name="subscriptions">The subscription manager used for searching and adding subscriptions</param>
        /// <param name="marketHoursDatabase">A security exchange hours provider instance used to resolve exchange hours for new subscriptions</param>
        /// <param name="symbolPropertiesDatabase">A symbol properties database instance</param>
        /// <param name="marketMap">The market map that decides which market the new security should be in</param>
        /// <param name="cashBook">The cash book - used for resolving quote currencies for created conversion securities</param>
        /// <param name="changes"></param>
        /// <returns>Returns the added currency security if needed, otherwise null</returns>
        public Security EnsureCurrencyDataFeed(SecurityManager securities,
                                               SubscriptionManager subscriptions,
                                               MarketHoursDatabase marketHoursDatabase,
                                               SymbolPropertiesDatabase symbolPropertiesDatabase,
                                               IReadOnlyDictionary <SecurityType, string> marketMap,
                                               CashBook cashBook,
                                               SecurityChanges changes
                                               )
        {
            // this gets called every time we add securities using universe selection,
            // so must of the time we've already resolved the value and don't need to again
            if (ConversionRateSecurity != null)
            {
                return(null);
            }

            if (Symbol == CashBook.AccountCurrency)
            {
                ConversionRateSecurity = null;
                _isBaseCurrency        = true;
                ConversionRate         = 1.0m;
                return(null);
            }

            // we require a security that converts this into the base currency
            string normal             = Symbol + CashBook.AccountCurrency;
            string invert             = CashBook.AccountCurrency + Symbol;
            var    securitiesToSearch = securities.Select(kvp => kvp.Value)
                                        .Concat(changes.AddedSecurities)
                                        .Where(s => s.Type == SecurityType.Forex || s.Type == SecurityType.Cfd || s.Type == SecurityType.Crypto);

            foreach (var security in securitiesToSearch)
            {
                if (security.Symbol.Value == normal)
                {
                    ConversionRateSecurity = security;
                    return(null);
                }
                if (security.Symbol.Value == invert)
                {
                    ConversionRateSecurity = security;
                    _invertRealTimePrice   = true;
                    return(null);
                }
            }
            // if we've made it here we didn't find a security, so we'll need to add one

            // Create a SecurityType to Market mapping with the markets from SecurityManager members
            var markets = securities.Select(x => x.Key).GroupBy(x => x.SecurityType).ToDictionary(x => x.Key, y => y.First().ID.Market);

            if (markets.ContainsKey(SecurityType.Cfd) && !markets.ContainsKey(SecurityType.Forex))
            {
                markets.Add(SecurityType.Forex, markets[SecurityType.Cfd]);
            }
            if (markets.ContainsKey(SecurityType.Forex) && !markets.ContainsKey(SecurityType.Cfd))
            {
                markets.Add(SecurityType.Cfd, markets[SecurityType.Forex]);
            }

            var potentials = Currencies.CurrencyPairs.Select(fx => CreateSymbol(marketMap, fx, markets, SecurityType.Forex))
                             .Concat(Currencies.CfdCurrencyPairs.Select(cfd => CreateSymbol(marketMap, cfd, markets, SecurityType.Cfd)))
                             .Concat(Currencies.CryptoCurrencyPairs.Select(crypto => CreateSymbol(marketMap, crypto, markets, SecurityType.Crypto)));

            var minimumResolution = subscriptions.Subscriptions.Select(x => x.Resolution).DefaultIfEmpty(Resolution.Minute).Min();

            foreach (var symbol in potentials)
            {
                if (symbol.Value == normal || symbol.Value == invert)
                {
                    _invertRealTimePrice = symbol.Value == invert;
                    var  securityType     = symbol.ID.SecurityType;
                    var  symbolProperties = symbolPropertiesDatabase.GetSymbolProperties(symbol.ID.Market, symbol.Value, securityType, Symbol);
                    Cash quoteCash;
                    if (!cashBook.TryGetValue(symbolProperties.QuoteCurrency, out quoteCash))
                    {
                        throw new Exception("Unable to resolve quote cash: " + symbolProperties.QuoteCurrency + ". This is required to add conversion feed: " + symbol.Value);
                    }
                    var marketHoursDbEntry = marketHoursDatabase.GetEntry(symbol.ID.Market, symbol.Value, symbol.ID.SecurityType);
                    var exchangeHours      = marketHoursDbEntry.ExchangeHours;

                    // use the first subscription defined in the subscription manager
                    var type       = subscriptions.LookupSubscriptionConfigDataTypes(securityType, minimumResolution, false).First();
                    var objectType = type.Item1;
                    var tickType   = type.Item2;

                    // set this as an internal feed so that the data doesn't get sent into the algorithm's OnData events
                    var config = subscriptions.Add(objectType, tickType, symbol, minimumResolution, marketHoursDbEntry.DataTimeZone, exchangeHours.TimeZone, false, true, false, true);

                    Security security;
                    if (securityType == SecurityType.Cfd)
                    {
                        security = new Cfd.Cfd(exchangeHours, quoteCash, config, symbolProperties, cashBook);
                    }
                    else if (securityType == SecurityType.Crypto)
                    {
                        security = new Crypto.Crypto(exchangeHours, quoteCash, config, symbolProperties, cashBook);
                    }
                    else
                    {
                        security = new Forex.Forex(exchangeHours, quoteCash, config, symbolProperties, cashBook);
                    }

                    ConversionRateSecurity = security;
                    securities.Add(config.Symbol, security);
                    Log.Trace("Cash.EnsureCurrencyDataFeed(): Adding " + symbol.Value + " for cash " + Symbol + " currency feed");
                    return(security);
                }
            }

            // if this still hasn't been set then it's an error condition
            throw new ArgumentException(string.Format("In order to maintain cash in {0} you are required to add a subscription for Forex pair {0}{1} or {1}{0}", Symbol, CashBook.AccountCurrency));
        }