TL;DR
A token unlock is a scheduled event where previously locked tokens (from team, investor, or ecosystem allocations) become available for trading, often creating sell pressure.
When a project raises funds from VCs or allocates tokens to the team, those tokens are typically locked with a vesting schedule. A common schedule: 1-year cliff (no tokens released for a year), then linear vesting over 2-3 years. A “cliff” unlock releases a large batch at once (e.g., 10% of supply on the 1-year anniversary). Linear vesting releases tokens continuously (e.g., daily or monthly).
When millions of dollars in tokens unlock, recipients (VCs, team members) often sell — they need to realize profits or cover expenses. This creates sell pressure that can significantly drop the price, especially for tokens with thin liquidity. Large cliff unlocks are particularly impactful because a huge batch hits the market at once. The market often prices in anticipated unlocks, with prices declining in the days leading up to the event.
Check unlock schedules on token pages or analytics platforms. Avoid buying large positions right before major unlocks. Some traders short tokens into cliff unlocks. After the sell pressure subsides, tokens sometimes recover — creating buying opportunities. For memecoins launched on Pump.fun with fully circulating supply, unlocks aren’t a concern since there’s no vesting schedule.