RSI — the speedometer
RSI (Relative Strength Index) is a number from 0–100 measuring how
fast a stock has been rising or falling recently. Above 70 = "overbought" — it rose very fast and
might need a rest. Below 30 = "oversold" — it fell very fast and might bounce. It's a speedometer,
not a fortune teller: strong stocks can stay overbought for months.
After running very fast, a player usually slows to catch breath. RSI tells you who's been
sprinting. It doesn't tell you who wins the match.