I stand corrected, Yahoo Finance used to have real-time data only from BATS but now also features real-time data from NYSE and NASDAQ.
https://help.yahoo.com/kb/finance/SLN2310.html?impressions=true
Thanks for helpful reply.
I should choose roughly 300 (at most 500) good equities, for my personal logic. (Not interested in option/future+commodity+else) Possibly some of them are SnP500.
I wonder if BATS is related to my good(???) 500 equities.
