Quandl for now, but fairly soon I'll be collecting realtime prices from interactive brokers. (My strategies generally run on a daily basis, so daily data is go

Quandl for now, but fairly soon I'll be collecting realtime prices from interactive brokers. (My strategies generally run on a daily basis, so daily data is good enough for that. But soon I'm going to switch to a full algo strategy, which will require realtime data to backtest.)