You Have a Thesis. Do You Have a Risk Plan?
Study the greatest traders and investors, and one lesson keeps appearing: protecting capital is fundamental to lasting success.
Yet look at where so much of our attention goes.
The macro trader can become consumed by the thesis, the research, and the intellectual stimulation of explaining what should happen next.
The growth and momentum trader can spend endless hours studying setups, running screens, and hunting for the next hot stock.
The systematic trader can get trapped in a loop of backtesting and tweaking, eventually fitting the rules to historical results while searching for a perfect system.
The value investor can spend months digging through financial statements, convinced the next overlooked company will be the needle in the haystack.
Research is important. Understanding your approach and finding opportunities are essential parts of the work.
But how much effort goes into managing the money attached to those ideas?
Can you clearly explain:
How much of your account you are willing to risk on a trade?
How you determine the size of each position?
What requires you to reduce or exit a position?
When and how you sell a portion into strength or reduce into weakness?
When and how you add to a winning position?
How much total exposure and concentration you will allow?
What happens if several positions move against you together?
How you adjust when losses accumulate or market conditions deteriorate?
These decisions deserve a process every bit as deliberate as your research.
The same trade signals can produce dramatically different account results depending on position sizing.
Three traders can start with the same capital and follow the same buy and sell signals, yet finish with very different outcomes. One can generate substantial profits, another finish roughly flat, and another suffer devastating losses.
The difference can be how much each risks on each trade and how that amount changes along the way.
Why would something that consequential be an afterthought in your trading process?
A sound strategy is still important. Position sizing does not replace the need for an edge, but poor sizing and undisciplined risk-taking can undermine an otherwise sound approach.
Before assuming your next breakthrough requires another screen, another indicator, or another round of backtesting, examine the part of your process that determines how much you risk when you’re wrong and how much of a gain you are willing to give back when you’re right.
If you can explain your thesis in detail but cannot explain your risk, your trading strategy / plan is unfinished.




