I just checked it and it seems one of the best options to track stocks especially if you use more than one brokerage account and for Europeans, if someone has local holdings, yahoo can also look up their data. For example I have one holding in Baltic stock market, and they manage to get its data, same with ETF’s that are listed in different exchanges.
Would that not satisfy most people asking questions about where to track your holdings? Sure there are some paid features, but basic info is more than enough it seems.
Here are some photos so you could evaluate with out registering.