Dear all, I'm using *rugarch* and *rmgarch *to implement a DCC model over 30 different assets. While using *ugarchspec *for defining input parameters of univariate GARCH using a t-Student distribution, I have noticed that there is a parameter called *fixed.pars*. Using the example given in GitHub, this parameter is set as following: fixed.pars = list(shape = 5) in case of a t-Student distribution. If I change this setting from 5 to 3 (for example) results are very different. Can someone tell me the importante and the usage of this parameter? Thanks to all Tommaso [[alternative HTML version deleted]]