Risk Management: The Essential Guide

By Sam Davila on 2025-01-05 - 2 min read

Risk management is the only part of trading where discipline reliably beats talent. Entries decide how often you are right; risk management decides whether being wrong is survivable. This guide covers the five controls that do most of the work, and the drawdown math that explains why they are not optional.

The math that makes the case

Losses and gains are not symmetric. A 10% drawdown needs 11% to recover. A 30% drawdown needs 43%. A 50% drawdown needs 100%. This asymmetry is the entire argument for risk management: your first job is never to visit the deep end of that table, because the climb out grows faster than the fall.

Control 1: Fixed risk per trade

Professionals commonly risk 1% to 2% of the account per trade, where risk means the loss if the stop is hit. Decide the stop first, then size the position from it. Ten straight losses at 1% is a bruise; at 10% it is the end of the account. Losing streaks are a statistical certainty for every strategy, so size for their existence.

Control 2: Stops decided before entry

A stop placed before the trade is a plan; a stop improvised during the trade is a negotiation you will lose. Put it where the trade idea is invalidated (below the level that made you enter, not at a round number), and treat moving a stop away from price as what it is: refusing to admit the trade failed.

Control 3: Correlation is hidden size

Three positions in three semiconductor names are not three trades; they are one large trade with extra commissions. Cap the total risk of correlated positions, not just each one. This is also the multi-account trap: the same name or sector held at two brokers doubles your real exposure while each account looks fine on its own.

Control 4: A daily and weekly loss limit

Decide in advance the loss that ends your trading day and the loss that ends your week. The point is not the number; it is that judgment degrades exactly when losses mount, so the rule must be made while you are calm and obeyed while you are not.

Control 5: Review the risk, not just the P&L

Weekly, look at your largest drawdown, your biggest position as a percent of the account, and every trade where you overrode a rule. Traders drift toward more risk when winning and more revenge when losing; a review catches the drift while it is still cheap.

Where tooling helps

Most risk failures are visibility failures: you did not see the concentration, the streak, or the rule override until after it cost money. Sentient Logic aggregates positions across every connected broker so your true exposure is one number, and its psychology tracking flags the emotional patterns (revenge trades, size creep) that no spreadsheet catches.

Educational content, not financial advice. Trading involves risk of loss.