Pump.fun is where most Solana memecoins are born. It’s also where most people lose money. Both things are true, and neither is an accident — the platform is designed to make launching effortless and buying frictionless, which means the only thing standing between you and a bad decision is what you know before you click.
This is the short version of how it works, and what to check.
What a launch actually is
Anyone can create a coin in under a minute. No presale, no team allocation, no application. You pick a name, ticker and image, and it goes live with a bonding curve.
A bonding curve is just a price formula. As people buy, the price rises automatically; as they sell, it falls. There’s no order book and no market maker — the contract is the counterparty. Once enough has been bought, the coin “graduates” to a normal liquidity pool on PumpSwap, where it trades like any other token.
That’s the whole mechanic. Everything else — the trends, the raids, the Telegram groups — is behaviour layered on top.
Where the money comes from
This is the part people skip, and it explains almost everything else.
Early buyers profit when later buyers pay more. That’s it. There’s no revenue, no product, no cash flow — the only exit is selling to someone who bought later than you.
Which means: every winner is funded by a loser, and the loser is usually the person who arrived after it trended. That’s not a scam, it’s the structure. Knowing it changes what you’re willing to risk.
The four checks that matter
Before you buy anything, run these. They take about a minute total.
1. Is the mint authority revoked? If it isn’t, the supply can be inflated whenever the creator wants.
2. Does one wallet hold more than 10%? Check the holder list. A single wallet holding a third of the supply is a countdown, not a launch. See the rug pull checklist for how to read it properly.
3. Is liquidity locked, and for how long? Unlocked liquidity means the pool can be pulled in one transaction.
4. What did the dev wallet do on their last launch? Their history is public. If they dumped the last one, they’ll dump this one.
If you can’t answer all four, you’re not investing — you’re guessing with extra steps.
The patterns that repeat
Most rugs are one of six shapes, and they all leave evidence before the token trends. Bundled wallets buying in the same block. Wash-traded volume that looks like interest. Dev supply sold slowly into buyers. A honeypot where buys work and sells fail.
The full breakdown is in the rug pull warning signs. Read it once and you’ll start seeing the setups before they play out.
What to do differently
Three habits separate people who survive this from people who don’t:
Size like it’s going to zero. Because most of them do. A position you can lose without changing your month is the only sane size.
Decide your exit before you enter. Not a price target — a rule. “If it doubles I sell half” is a rule. “I’ll know when to sell” is how people round-trip a 5x back to zero.
Don’t chase the trend. By the time a coin is trending, the people who bought the launch are already deciding when to sell to you.
If you’re launching one
Understand the creator fee before you build a plan around it — it’s smaller than most people assume, and only meaningful if the coin actually runs. The pre-launch checklist covers what to verify before anyone can buy.
Not financial advice. Memecoin trading carries a high risk of total loss — most tokens go to zero, and that’s the normal case rather than the failure case.