if it is manual trading, it is easy to open several brokers to smear trades around. but if you do programming trading, it is more complex, since you have codes for two platforms, managing positions on two brokers is a little complex.
trump uses every tool he can find to boost market. he even asked fed to consider negative interest. if fed indeed takes negative interest road, what will happen to the asset price? just wish he will lose the coming election in 2020.
i am an advanced programmer, with 30 years of coding experience under belt. I know the back test result is not accurate, but it is suffice to demonstrate the model has positive expectancy. the key is to kick out potential losers while scan for targets. the logic behind the model is sound.
a little about my background. bachelor and phd from top universities. landed a research scientist position in US government institute, working on big data. tweaked my expertise to finance. luckily hit a strategy that has been working so far, so quitted the job in 2008. In the last 10 years...
for up day, i always assume low comes first, then go up; vice verse for down day. that is because I entered at low. I admitted by that assumption, the back-test result is significant different from live trading, but backtest results are positive, that is a green light for me to go live anyway.