Pump.fun Bonding Curve Explained: Graduation, Supply and Price

What is the pump.fun bonding curve?

The pump.fun bonding curve is a constant-product pricing mechanism that prices a token automatically as people buy and sell, without a traditional order book or a market maker. Every token launched on pump.fun starts on its own bonding curve rather than going straight into a liquidity pool.

As buyers put SOL into the curve, the price rises along a deterministic formula; as sellers take SOL out, it falls the same way. This removes the need for anyone to seed an initial liquidity pool manually before trading can begin.

How supply is split between the curve and graduation

A pump.fun token's total supply is fixed at 1,000,000,000 tokens. Of that, roughly 800 million are available to trade on the bonding curve itself, while the remaining roughly 200 million are held back specifically to seed the liquidity pool at graduation.

• Total supply: 1,000,000,000 tokens, fixed for every pump.fun launch.
• Available on the bonding curve: approximately 800,000,000 tokens.
• Reserved for the graduation liquidity pool: approximately 200,000,000 tokens.

The graduation threshold: roughly 85 SOL

A pump.fun token graduates once its bonding curve accumulates approximately 85 SOL in real reserves, on top of an initial 30 SOL virtual bootstrap the curve starts with - commonly cited as roughly $69,000 in market cap, though the exact dollar figure moves with SOL's price since the threshold itself is SOL-denominated, not dollar-denominated.

Because the SOL figure is the stable reference point and the dollar figure floats with the market, creators and traders tracking progress toward graduation are better served watching the SOL amount in the curve than a dollar market-cap target.

What happens when a token graduates

• The bonding curve closes to further trading on the curve itself.
• The accumulated SOL reserves and the reserved supply move together to seed a new liquidity pool.
• Since pump.fun launched its own exchange, graduated tokens migrate to PumpSwap; earlier tokens migrated to Raydium before that change.
• Trading continues in the new pool under standard two-sided AMM dynamics, replacing the one-sided bonding-curve pricing the token traded under before.

Why most tokens never graduate

Multiple independent trackers put pump.fun's overall graduation rate under 2% - the large majority of tokens launched never accumulate enough buy pressure to reach the threshold and instead stall out on the curve at low value.

This is a structural feature of an open, permissionless launchpad rather than a flaw: anyone can launch a token for a small fee, so the volume of low-effort or purely speculative launches is high, and graduation acts as a real filter rather than a formality.

Common misconceptions about the bonding curve

• "The curve can be manipulated." The bonding curve is an on-chain program with a fixed formula - price moves only in response to real buys and sells, there is no manipulation lever built into the mechanism itself.
• "Graduation means guaranteed profit." Graduation confirms the curve reached its threshold, not that the token's price will hold afterward - the period immediately after graduation is typically volatile in both directions.
• "Every token is trying to graduate." Some tokens are launched with no real expectation of graduating - treating graduation as evidence of legitimate intent on its own is a mistake.

FAQ

• What is the pump.fun graduation threshold? Approximately 85 SOL of real reserves in the bonding curve, on top of the curve's initial 30 SOL virtual bootstrap - commonly cited as around $69,000 in market cap, though that dollar figure moves with SOL's price.
• What percentage of pump.fun tokens graduate? Independent trackers consistently put the graduation rate under 2% of all tokens launched.
• Where does a token go after it graduates from pump.fun? It migrates to PumpSwap, pump.fun's own exchange; tokens that graduated before that exchange existed migrated to Raydium.
• Can the bonding curve price be manipulated? No - it is a fixed, on-chain formula that only responds to actual buy and sell transactions.