Peter Navarro is saying that Ricardian free trade only works if exchange rates are freely floating.
https://www.zerohedge.com/news/2018-11-09/dollar-bonds-spike-stocks-tumble-after-navarro-crushes-hopes-china-deal-slams
You want to get hosting close to the matching engine of the poduct you are trading. What are trading?
See https://www.speedytradingservers.com there are others.
Google post earnings announcement drift. There are a number of academic papers on the subject publically available. Large accounts take time to accumulate a position.
https://sourceforge.net/projects/jcharts/
This is real-time and interactive brokers mosaic uses it so it must be real-time.
https://sourceforge.net/projects/jchart2d/
Sign up for esignal classic $50 a month. Use qcollector from www.mechtrading.com to get all the intraday data into CSV files for $129. Cancel esignal. If you keep the esignal classic delayed the CSV files can be kept up to date automatically.