I have a healthy slug of SingPost in my portfolio, and as of today i'm sitting on a 30-plus percent paper gain due to alibaba and all. And like you, its extremely tempting for me to want to divest my stake too as I think it is overvalued currently.
However, my original investment plan was to hold my stocks unless I needed the cash or the company's fundamentals were deteriorating (trying to minimize transaction costs as much as possible). I never thought about selling when the stock is potentially overvalued until now though.
I think Singpost's fundamentals are still sound, and I am not in need of cash anytime soon. Furthermore, I don't think there's anyplace else to put the cash in the event that i sell as I think local stocks are mostly fully valued at the moment, hence I'm still holding on.
Any bros out here having similar thoughts?