Relative strength index — an oscillator from 0 to 100 measuring the magnitude of recent gains against recent losses.
Last verified 13 September 2026 · written by the DexLadder team
What it means
Relative strength index — an oscillator from 0 to 100 measuring the magnitude of recent gains against recent losses.
Why it matters when you trade
RSI is usually taught as overbought above 70 and oversold below 30, which is exactly backwards in a strong trend: powerful moves live above 70 for weeks, and shorting them because a number is high is a reliable way to lose money. Its more useful reading is as a momentum description, and as divergence — price making a new extreme that the oscillator does not confirm.
Worked example
RSI holds above 70 for three weeks while price grinds up 40%. The indicator was describing strength, not warning of a top.
See it on live markets
DexLadder runs rsi against live market and pool data, with simulated capital, so you can watch it act on an order instead of reading about it — no account, no wallet, nothing installed.