Pump.fun coins can't be rugged the old way. There is no liquidity pool for the creator to empty while a coin is on its bonding curve, and mint and freeze authority are switched off when the coin is made. Coins still collapse all the time. The difference is how: on pump.fun, a rug is almost always someone holding a big share of the supply and selling it into the people buying.
This guide explains the common patterns and the public signs you can check for each one. If pump.fun itself is new to you, start with what is pump.fun and how does its bonding curve work.
UK note: pump.fun has blocked UK users since December 2024, after the FCA added it to its Warning List of firms that may be providing financial services without permission. Its coins still trade on other Solana apps, with no UK consumer protection.
Why the classic rug doesn't apply
In a classic rug pull, a creator puts money into a trading pool, waits for buyers, then withdraws the pool and leaves holders with tokens nobody can sell. See liquidity locks and burns for how that works.
Pump.fun removed that step. While a coin is on the curve, the curve itself quotes the price, and there is no pool for anyone to withdraw. When a coin graduates, pump.fun creates the PumpSwap pool itself, and the creator can't simply pull it in the usual way.
Mint authority (the power to print more tokens) and freeze authority (the power to stop wallets selling) are also switched off on standard pump.fun coins. Our guide to mint and freeze authority explains both.
So the tools for the old tricks are gone. What is left is supply: who holds it, how they got it and when they sell.
How pump.fun rugs happen
1. The bundled launch
The creator buys a large share of the supply in the same moment the coin launches, spread across many fresh wallets so it looks like lots of small, separate buyers. When real buyers push the price up, those wallets sell together. On a bonding curve, early tokens are the cheapest, so whoever buys first can sell to later buyers at a profit even if nothing about the coin has changed.
The signs: several top holders with near-identical bags, wallets funded from the same source, and a creator wallet that holds almost nothing itself. See bundled launches and insider wallets.
2. The dev dump
The creator keeps their tokens in their own wallet and sells them once the price has risen. It is the simplest version, and the easiest to see in advance.
The signs: the creator wallet still holds a meaningful share of the supply. RugCheck shows the creator's balance, and the holder list on Solscan or Bubblemaps shows who holds what.
3. The graduation dump
Insiders hold their tokens through the curve, push the coin over the line to graduation, then sell into the new PumpSwap pool. Graduation looks like a milestone, so it can pull in buyers at exactly the moment early holders want to sell.
The signs: a few wallets that bought early still hold a large share as the coin nears graduation, and the price chart shows a run straight up into graduation. Graduation is not a quality badge.
4. Fake activity
Bots can trade a coin back and forth to make its volume, transaction count and holder number look healthy. That can lift a coin up trending lists and draw in buyers. Pump.fun pays creators a share of trading fees, which gives some creators a reason to fake volume on their own coin.
The signs: volume that looks large next to the number of real holders, lots of tiny buys and sells of the same size, and the same few wallets trading again and again.
5. The copycat
When a coin gets attention, copies with the same name and picture appear within minutes. Some buyers end up holding a copy that was made to be dumped.
The signs: another, older coin with the same ticker. Always check the contract address, not the name. See copycat tokens.
6. The serial launcher
Some creator wallets launch coin after coin, dump each one and move on.
The signs: RugCheck flags creators whose earlier tokens rugged, and a creator wallet with a long list of past launches on Solscan.
What to check on a pump.fun coin
| Check | Where to look | What a warning sign looks like |
|---|---|---|
| Top holders | RugCheck, Solscan, Bubblemaps | One wallet with 8% or more, or the top 10 with 30% or more, not counting the curve or pool |
| Identical bags | RugCheck or Solscan holder list | Three or more top wallets holding nearly the same amount |
| Linked wallets | RugCheck insider graph, Bubblemaps | Clusters of wallets funded from one source |
| Creator holdings | RugCheck | The creator still holds 5% or more |
| Creator history | RugCheck | Earlier tokens from the same creator that rugged |
| Ticker | DexScreener search | An older coin with the same ticker |
| Trading pattern | DexScreener | Volume far larger than the number of holders would suggest |
Holder figures on a coin still on the curve include the curve's own account, which holds the unsold tokens. Leave it out when you add up the top holders. Our grades already do this, and they leave out pools and lockers too.
Key point: A clean result means the visible tools for a rug are not there. It does not stop holders selling. Read can a coin that passes every check still rug before trusting any check, ours included.
How our grades handle pump.fun coins
Our live board grades new Solana memecoins A to F, including pump.fun coins on the curve. Every check above that can be read from public data adds points: identical bags, linked insider wallets, large holders, creator holdings and history, and copycats. The thin-liquidity check waits until a coin graduates, because a coin on the curve has no pool yet. The full table is in what our grades mean.
To check a single coin, paste its contract address into our rug check.
Related
- What is pump.fun and how does its bonding curve work?
- How to spot a rug pull on Solana
- Bundled launches
- How to read a RugCheck report