When pulling data based on ticker symbol (for multiple tickers), why do some of the tickers start with @ and some start with U:?
ie:
ds.get_data(tickers='@AAPL, @FB, @GOOGL, @MSFT, @NXPI, U:JPM, U:XOM, U:BAC, U:BABA, U:V', fields=['SOCOO01V','ENPIDP048','SOHRDP012','SOEQ','SOTDDP018','SODODP0012','ENRRDP033','ENERDP05 2','CGVSDP030'], start='-5Y', freq='Y')
What's the difference, and how could I tell which one to use?
