As I said in a previous post, I would NOT hang my hat to high on terms like "a while".
Time, in NUAN's case is based on where most traders got in; they already know BEFORE they buy, just where they are going to sell. Knowing when to sell is MORE important than knowing when to buy.
Just ask any of the "investors" here, still holding NUAN.
Traders' purchases AND sales are measured in percentages, not in days or weeks. If NUAN gets close to a 10% pop or so and if I just bought NUAN down here somewhere, I'd sell into any rally after that 10% was achieved. If you're convinced that NUAN will go higher, sell 50% of your holdings then. If NUAN continues higher, say 3% further than when you sold, selling half of what you've got left.
That's how you get out.
Watch the next rally in NUAN to see just how long "a while" lasts with "traders" and their ilk.