예제 #1
0
        /// <summary>
        /// Values at, overriding calibrated Wing Model with supplied parms
        /// </summary>
        /// <param name="stock"></param>
        /// <param name="expiry">The expiry.</param>
        /// <param name="strikes">The strikes.</param>
        /// <param name="parms">The parms.</param>
        /// <param name="oride"></param>
        /// <param name="cache">if set to <c>true</c> [cache].</param>
        /// <returns></returns>
        public ForwardExpiry ValueAt(Stock stock, DateTime expiry, List <Double> strikes, OrcWingParameters parms, bool oride, bool cache)
        {
            var fwdExpiry = new ForwardExpiry {
                ExpiryDate = expiry
            };
            double forward = stock.GetForward(stock.Date, expiry);

            fwdExpiry.FwdPrice = Convert.ToDecimal(forward);
            foreach (double strike in strikes)
            {
                double           val = OrcWingVol.Value(strike, parms);
                IVolatilityPoint vp  = new VolatilityPoint();
                vp.SetVolatility(Convert.ToDecimal(val), VolatilityState.Default());
                bool   node = VolatilitySurfaceHelper.IsMatch(strike, expiry, NodalExpiries);
                Strike newstrike;
                if (node & oride)
                {
                    newstrike = VolatilitySurfaceHelper.GetStrike(strike, expiry, NodalExpiries);
                    //new data points, derefernce fitting model
                    newstrike.InterpModel = null;
                }
                else
                {
                    //var wingModel = new WingInterp {WingParams = parms};
                    newstrike = new Strike {
                        StrikePrice = strike, InterpModel = null
                    };
                    //newstrike.InterpModel = wingModel;
                    fwdExpiry.AddStrike(newstrike, node);
                }
                newstrike.SetVolatility(vp);
            }
            return(fwdExpiry);
        }
예제 #2
0
        /// <summary>
        /// Failures the specified exception.
        /// </summary>
        /// <param name="exception">The exception.</param>
        /// <returns></returns>
        public static VolatilityState Failure(System.Exception exception)
        {
            VolatilityState state =
                new VolatilityState(VolatilityStateType.Failure, exception.GetBaseException().Message)
            {
                FailureException = exception
            };

            return(state);
        }
예제 #3
0
        /// <summary>
        /// Values at.
        /// </summary>
        /// <param name="stock"></param>
        /// <param name="expiries">The expiries.</param>
        /// <param name="strikes">The strikes.</param>
        /// <param name="?">Cache to vol object</param>
        /// <param name="cache"></param>
        /// <returns></returns>
        public List <ForwardExpiry> ValueAt(Stock stock, List <DateTime> expiries, List <Double> strikes, bool cache)
        {
            var forwardExpiries = new List <ForwardExpiry>();

            foreach (DateTime exp in expiries)
            {
                var fwdExpiry = new ForwardExpiry();
                foreach (double str in strikes)
                {
                    var    wingModel = new WingInterp();
                    double forward   = stock.GetForward(stock.Date, exp.Date);
                    double spot      = Convert.ToDouble(stock.Spot);
                    fwdExpiry.FwdPrice = Convert.ToDecimal(forward);
                    double y     = str;
                    double x     = (exp.Subtract(Date)).Days / 365.0;
                    IPoint point = new Point2D(x, y);
                    InterpCurve.Forward = forward;
                    InterpCurve.Spot    = spot;
                    var val             = InterpCurve.Value(point);
                    IVolatilityPoint vp = new VolatilityPoint();
                    vp.SetVolatility(Convert.ToDecimal(val), VolatilityState.Default());
                    fwdExpiry.ExpiryDate = exp;
                    bool node = VolatilitySurfaceHelper.IsMatch(str, exp, NodalExpiries);
                    // copy model used to return ForwardExpiry object
                    var newstrike = new Strike {
                        StrikePrice = str
                    };
                    var wing = (WingModelInterpolation)InterpCurve.GetYAxisInterpolatingFunction();
                    //SABRModelInterpolation wing = (SABRModelInterpolation)_interpCurve.GetYAxisInterpolatingFunction();
                    wingModel.WingParams  = wing.WingParameters;
                    newstrike.InterpModel = wingModel;
                    fwdExpiry.AddStrike(newstrike, node);

                    newstrike.SetVolatility(vp);
                }
                forwardExpiries.Add(fwdExpiry);
            }
            return(forwardExpiries);
        }
예제 #4
0
        /// <summary>
        /// Defaults this instance.
        /// </summary>
        /// <returns></returns>
        public static VolatilityState Default()
        {
            VolatilityState state = new VolatilityState(VolatilityStateType.Default, string.Empty);

            return(state);
        }