Why it matters
Why spread matters to traders
A wider spread means price must move farther before a trade reaches economic breakeven. For tight-stop and short-horizon strategies, spread changes can materially alter expected results.
Practical use
How traders use it
Monitor normal spread by instrument and session, avoid assuming quoted conditions stay constant around news or rollover, and include spread in backtests where it materially affects entries and stops.
Common mistake
What to avoid
Comparing brokers or markets by headline spread alone ignores commission, slippage, fill quality and the conditions under which that spread is actually available.
Primary & authoritative references
Go deeper into the market mechanics
These references are included where the concept connects to published market data, official definitions, or monetary-policy statistics. Framework-specific charting labels may not have an official exchange definition.
Use the concept, not the label
Trading terminology is useful only when it improves a repeatable process. Define the concept clearly, test how you use it, pair it with risk management, and avoid turning chart language into certainty about what the market must do next.