Liquidity Locks and Rug Pulls

What "liquidity" actually means

When a new token launches on Solana, it usually gets paired with SOL or USDC in a liquidity pool on a decentralized exchange like Raydium or Orca. This pool is what lets people buy and sell the token. The person who creates the token also deposits the initial liquidity — meaning they put in both the new token and some real SOL to seed the pool.

Here's the key detail: whoever deposits that liquidity receives LP (liquidity provider) tokens in return, which represent ownership of the pool. Holding those LP tokens means you can withdraw the underlying SOL and tokens whenever you want.

What a rug pull looks like

A "rug pull" happens when the token creator withdraws their liquidity, draining the SOL (or USDC) out of the pool while leaving buyers holding a token that's now worth almost nothing. Because the price of a token in these pools is based on the ratio between the two assets, removing one side collapses the price instantly. People who bought in can no longer sell for anything close to what they paid.

This isn't a hack or a bug — it's simply someone using ownership rights they always had. The pool was never "safe" by default; it was safe only as long as the creator chose not to pull it.

What an LP lock does

To reassure buyers, some projects "lock" their LP tokens. This usually means sending the LP tokens to a smart contract (a locker or vesting contract) that holds them for a fixed period — say, six months or a year — during which they cannot be withdrawn or moved.

This is a real, verifiable action. You can usually check it on a Solana block explorer or a locker service's dashboard, which shows the locked amount and the unlock date.

What an LP lock does NOT guarantee

This is where a lot of beginners get too comfortable. A lock only restricts the *liquidity pool* tokens. It says nothing about:

  • Token supply control: the creator may still hold a huge portion of the actual token supply and can dump it on the market, crashing the price even with liquidity locked.
  • Mint authority: if the token's mint authority hasn't been revoked, the creator can create unlimited new tokens, diluting everyone else's holdings.
  • Lock duration: a 30-day lock isn't much protection if you're planning to hold long-term — the rug can simply happen the day after unlock.
  • Lock legitimacy: some "locks" are on fake or unaudited locker contracts, or the "proof" screenshot isn't even from a real transaction.

A locked pool reduces one specific risk. It does not make a token safe.

A concrete example

Imagine a new token called "SOLPUP" launches with a 100 SOL / 1,000,000 SOLPUP liquidity pool. The team locks the LP tokens for 90 days — verifiable on-chain. Buyers see this and feel reassured, and the price rises as people buy in.

But the team kept 40% of the total token supply in their own wallet, unlocked. Over the following weeks, they slowly sell that 40% into the rising demand, pushing the price back down to near zero — all while the liquidity pool itself remains fully locked and untouched. Technically, "the LP is locked" was true the entire time. It just wasn't the risk that mattered.

Common mistake

Treating "LP locked" as a green light to ape in without checking anything else. A lock is one data point, not a safety certificate. Always check mint authority status, holder distribution, and lock duration together — not just one signal in isolation.

On MAPLUStrade

Before trading a new token, use MAPLUStrade's token screener to check mint authority status, LP lock duration and percentage locked, and top holder concentration side by side. Set a price alert for the LP unlock date so you're not caught off guard if you're still holding when the lock expires.

Recap

An LP lock only stops the creator from pulling the pool — it says nothing about token supply, mint authority, or what happens after the lock expires. Check all the risk signals together, not just one.

--- *This lesson is educational only and not financial advice. Solana tokens carry high risk, including total loss of funds — never invest more than you can afford to lose.*