PumpSwap — Vertical Integration of Issuance and Trading
Note: PumpSwap launched in March 2025 and its parameters may have changed since this was written. Treat the specific numbers below as directional — verify against current on-chain state if precision matters.
PumpSwap is Pump.fun’s proprietary AMM, replacing Raydium V4 as the destination for tokens that graduate from the Pump.fun bonding curve. The move is strategically significant: Pump.fun now controls the full lifecycle of a token, from primary issuance through secondary trading.
Before PumpSwap: The Raydium Era
Prior to PumpSwap, a token’s lifecycle involved two separate protocols:
- Pump.fun — bonding curve (primary market).
- Raydium V4 — constant-product AMM (secondary market).
At graduation, Pump.fun deposited the accumulated SOL and token supply into a Raydium V4 pool. From that point forward, all trading fees accrued to Raydium (and its LPs), not to Pump.fun or the token creator.
The economics were clear: Pump.fun captured value only during the bonding curve phase. Once a token graduated — which is precisely when trading volume tends to spike — the fee stream transferred to Raydium.
After PumpSwap: Full-Stack Control
PumpSwap is a constant-product AMM (the same math from constant-product-amm) operated by Pump.fun itself. Graduated tokens now flow into PumpSwap pools instead of Raydium.
Fee Structure
| Fee component | Rate | Recipient |
|---|---|---|
| LP fee | 0.20% | Liquidity providers |
| Protocol fee | 0.05% | Pump.fun treasury |
| Creator fee | Up to 0.05% (planned) | Token creator |
| Total | 0.25% |
Compare with Raydium V4’s 0.25% fee (of which 0.22% to LPs, 0.03% to protocol). The total swap cost to traders is the same, but the fee distribution shifts: Pump.fun now captures the protocol fee directly, and a creator-fee mechanism gives token creators a revenue share on secondary trading.
Migration Mechanics
At graduation (85 SOL threshold), the transition is now instant and free — Pump.fun eliminated the ~6 SOL migration fee that was previously charged to seed the Raydium pool. The bonding curve’s reserves are deposited directly into a PumpSwap pool in a single atomic transaction.
The TradFi Analogy
The closest traditional-finance parallel is NYSE running its own IPO platform. Imagine if the New York Stock Exchange not only listed stocks for secondary trading but also operated the primary issuance process — setting the IPO price via a deterministic mechanism, collecting the proceeds, and then automatically listing the stock on its own exchange.
In TradFi, these functions are deliberately separated: investment banks handle issuance; exchanges handle secondary trading; regulators enforce boundaries. The separation exists partly for conflict-of-interest reasons (the entity setting the IPO price should not also profit from secondary trading volume) and partly for structural resilience.
Pump.fun’s vertical integration collapses this separation. Whether this is an efficient elimination of rent-seeking intermediaries or a concerning concentration of control depends on your priors about market structure.
Business Model Analysis
The vertical integration creates a compounding revenue model:
- Bonding curve phase: Pump.fun earns fees on every primary purchase.
- Graduation: The protocol captures the full token supply and liquidity (no leakage to a third-party AMM).
- Secondary trading: The protocol earns 0.05% on every swap, in perpetuity, across all graduated tokens.
- Creator fees: Incentivize creators to promote their tokens, driving volume, which generates more fees for the protocol.
Each graduated token becomes a perpetual fee-generating asset for the platform. With thousands of tokens graduating per day, even small per-swap fees aggregate into substantial revenue.
Implications for LPs
The LP fee of 0.20% (vs. Raydium’s 0.22%) is slightly lower, which means:
- LPs earn marginally less per unit of volume.
- The break-even volatility from lp-profitability is slightly lower.
- For the tokens traded on PumpSwap — which tend to be extremely volatile meme tokens — the LP position is challenging. High IL from volatility, partially offset by high volume during hype cycles.
The typical PumpSwap LP position is a high-risk, high-variance bet: very profitable during volume spikes, deeply unprofitable during price collapses. This is the extreme end of the profitability quadrant discussed in lp-profitability.
Open Questions
Several aspects of PumpSwap’s design and impact remain unresolved:
- Creator fee gaming: If creators earn fees on secondary volume, they have an incentive to generate wash trading. How will this be mitigated?
- Competition: Will Raydium, Orca, or other Solana DEXs lose meaningful market share for meme tokens? Or will arbitrage routing distribute volume across venues?
- Regulatory surface: Vertical integration of issuance and trading is precisely the structure that securities regulators have historically sought to prevent. How long before this draws attention?
- LP sustainability: Are PumpSwap LPs subsidizing the platform, or is the fee structure competitive enough to attract rational capital?
Companion notebook: notebooks/defi/06-pumpswap.py — Altair
visualization of fee distribution before/after PumpSwap; simulation of
protocol revenue as a function of graduation rate and secondary volume.
Questions to sit with:
- Pump.fun eliminated the ~6 SOL migration fee at graduation. This makes graduation cheaper but also removes a friction that slowed down bot activity. What second-order effects might this have?
- The creator fee creates an alignment between token creators and the protocol. But it also creates an incentive to launch tokens purely for fee farming. How would you design a mechanism to distinguish organic volume from wash trading?
- In TradFi, the separation of issuance and trading is enforced by regulation. In DeFi, it was enforced by the protocol boundary between Pump.fun and Raydium. PumpSwap removes that boundary. Is there an argument that the old structure was better for market quality?