It's common for people starting to invest to spend almost all their time deciding "what to buy" and very little deciding "how am I going to manage the risk of that decision." This is probably the biggest difference between an improvised approach and one with some discipline.
1. How much am I willing to lose on this position?
Not in the abstract ("not much"), but as a concrete number, defined before buying. This is, in practice, what a volatility-based stop-loss (like the one ATR calculates) does for you: it sets the point where you admit the idea didn't work ahead of time, instead of deciding it in the heat of the moment when the price is already falling and emotions kick in.
2. What percentage of my total capital does this position represent?
Concentrating too large a share of your capital in a single stock — no matter how convinced you are of the idea — multiplies the impact of being wrong. Diversifying across several positions, sectors, and even asset types reduces the effect of any single bad decision wrecking the overall outcome.
3. Is this risk consistent with my time horizon?
A position meant to be held for years shouldn't react to a single day's volatility, and a short-term position shouldn't be justified with "the company is good long-term" arguments. Mixing time horizons is a common source of inconsistent decisions.
Why this comes before technical or fundamental analysis
No indicator — not RSI, not the scanner's score, not an analyst's recommendation — eliminates uncertainty. Risk management isn't about always being right; it's about making sure that when you're wrong (and at some point you will be), the cost is manageable.
This article is educational content, not personalized investment advice. Before making decisions, read our disclaimer.