Bonding Curves Explained: How pump.fun Prices Meme Coins
By Alphacino Editorial Team ·
Quick Take
On pump.fun there is no order book: a math formula sets every price, and understanding it tells you exactly where early buyers get their edge.
Every token launched on pump.fun starts life on a bonding curve, and if you trade Solana memes without understanding it, you're guessing at prices that are actually set by a formula.
A bonding curve is a smart contract that acts as the only market maker. There's no order book and no liquidity pool at launch. When you buy, you send SOL into the curve and it mints you tokens at the current price. When you sell, the curve takes your tokens back and pays you SOL. The price is determined entirely by how much supply has already been bought.
The key feature is that the price climbs as supply gets bought. The first buyers pick up tokens for fractions of a cent. Each purchase pushes the price a little higher along the curve, so later buyers pay more for the same amount. That's why the first few minutes of a launch are so competitive, and why sniper bots fight to land in the earliest blocks.
The curve also works in reverse. Sells push the price back down, and because liquidity is only what's sitting in the curve, a few large exits can crater a coin quickly. Early snipers dumping on late buyers is the most common way pre-graduation tokens die.
When enough SOL has flowed in and the curve fills, the token graduates. Liquidity migrates to a real DEX pool, the curve closes, and trading moves to open-market pricing. Graduation is a milestone, but not a guarantee: plenty of coins peak right at migration as curve buyers take profit. Know where on the curve you're entering, and you'll know how much edge you actually have.
Stay ahead of Solana meme coin moves at alphacino.io