How would you compare the relative advantages and disadvantages of systems
trading
versus
discretionary trading?
Systems trading is ultimately discretionary. The manager still has to decide how much risk to accept, which
markets to play, and how aggressively to increase and decrease the trading base as a function of equity change.
These decisions are quite important—often more important than trade timing.
What percentage of your trading is systems based? Has this percentage changed over time?
Over time, I have become more mechanical, since (1)1 have become more trusting of trend trading, and (2)
my mechanical programs have factored in more and more "tricks of the trade." I still go through periods of thinking I
can outperform my own system, but such excursions are often self-correcting through the process of losing money.
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