Renaming a financial time series taking a long time

Right now I have

newfts = oldfts to change the name of the financial time seris but there is a good few second pause when this happens. Is there a way to eliminate this and just change the name of the financial time series

[Eike]

Why would you want to do something like this? Is having exactly the same variable but with a different name good for anything except causing reader's confusion?

Apart from that, the following blog post suggests there shouldn't be any delay in that situation due to lazy copying...?

http://blogs.mathworks.com/pick/2008/04/18/renaming-variables/