Should I use stop-loss orders?
In one paragraph
Yes — stop-loss orders are the primary tool traders use to limit downside and preserve capital when a trade moves against them.
What this actually means
Stop-loss orders are widely considered non-negotiable in active trading. They set a predefined exit point below a long position (or above a short), automatically closing the trade if price reaches that level. Their purpose is not to prevent all losses — losses are inevitable in trading — but to ensure no single trade inflicts disproportionate damage on the account.
The case for stop-losses rests on mathematics. A 25% loss requires a 33% gain just to break even. A 50% loss requires a 100% gain. Traders who allow losses to run without a defined exit often find themselves trapped in positions that require extraordinary recoveries to get back to even. Stop-losses interrupt this spiral by capping the damage at a predetermined level.
The most common objection is that stop-losses get "hunted" — meaning market makers or algorithms push price briefly to common stop levels before reversing. This is a real phenomenon in some instruments, and the practical response is not to abandon stops but to place them at technically meaningful levels (below key support, outside a pattern's range) rather than round numbers or arbitrary percentage thresholds.
Another approach used by systematic traders is the mental stop combined with an alert, executing the exit manually when the level is hit rather than leaving a visible order in the book. This requires greater discipline but avoids telegraphing exit levels to the market.
For investors with long time horizons who are not actively managing positions, traditional stop-losses can introduce more harm than good by shaking out positions during normal volatility. The distinction matters: stop-losses are a tool for active traders managing defined risk per trade, not a blanket rule for every participant.
The consistent message across professional trading literature is that capital preservation comes before profit-seeking, and stop-losses are the mechanism that enforces that priority in practice.