股票是投資還是投機?

股票有很多種，您想要投資的還是投機的股票。
一間可投資的公司也可以在數星期內由投資被轉為投機類別的股票。您看一看美國一些昔日的大藍籌，就會了解這個道理。

It all depends on your wish on buying shares. If you are buying this for long-term, looking for dividend and increase in its assets value in the long run, then this is an investment. If you are looking for a short-term, looking for sudden buying and selling on news, rumours etc. to give you a quick profit, then it is a speculation.
So, it is the intention of the investor of acquring the shares.