Four Signals That Tell You It's Time to Sell
These aren't guaranteed predictors. Nothing is in crypto. But they're the signals that, when they cluster together, have historically preceded significant pullbacks. The goal isn't to call the exact top — it's to identify when the risk/reward has shifted against you.
1. Momentum Shifts
The Relative Strength Index (RSI) measures how fast and how far a price has moved. When the weekly RSI on a coin pushes above 70, it's in overbought territory. That doesn't mean it will crash tomorrow, but it means the upward move is getting extended.
The more actionable signal is RSI divergence. If the price is making new highs but RSI is making lower highs, the momentum behind the rally is fading. Historically, bearish RSI divergence on the weekly timeframe is one of the most reliable precursors to a meaningful correction in major cryptocurrencies.
2. Volume Divergence
Healthy rallies are accompanied by rising volume. When a coin is making new highs on declining volume, it means fewer participants are driving the price up. The rally is thinning out.
Watch the 30-day average volume compared to the 90-day average. If the short-term average is dropping while the price is rising, that's a warning sign. The move is running on momentum, not conviction, and momentum fades.
3. Sentiment Extremes
The crypto Fear & Greed Index is a composite measure of market sentiment. When it sits above 75 (extreme greed) for sustained periods, that's historically been a time to trim positions, not add to them. This isn't contrarian for the sake of it — it reflects the reality that when everyone is euphoric, most of the easy money has already been made.
Social media activity is another useful gauge. When your non-crypto friends start asking you which altcoins to buy, when Crypto Twitter is posting yacht pictures, when mainstream news is writing “Bitcoin to $1 million” headlines — that's late-cycle behavior.
4. Stop-Loss Discipline
Every position should have a predefined level where you exit to protect capital. For a crypto position, a common approach is to set a stop-loss 15-25% below your entry or below a key technical support level.
The key word is “predefined.” You set this level before emotions get involved. When the price hits your stop-loss, you sell. No renegotiating, no “let me wait one more day.” The stop-loss exists because you decided, with a clear head, that below this price the reason you bought no longer holds.