Bundles, explained

A bundle is a group of buys packed into the same block as the token's creation, usually from wallets the dev controls. It is the most common setup behind fast rugs on pump.fun.

How a bundle works

1. The dev prepares 5 to 30 fresh wallets and funds them with SOL.
2. In the same transaction bundle as the coin's creation, all of those wallets buy.
3. Because they bought at the very bottom of the bonding curve, they own a large share of supply at almost no cost.
4. The dev promotes the coin, or just waits for organic buyers.
5. When enough people have bought, the bundle wallets sell together. The price collapses.

From the outside, the holder list looks like many small holders. In reality it is one person.

How to spot it

• Launch block buys. Terminals show how much supply was bought in the first block. Anything above 10 to 15% deserves a closer look.
• Similar amounts. Bundled wallets often buy nearly identical amounts.
• Shared funding. Trace two or three top holders back. If they were funded from the same address shortly before launch, they are connected.
• Bundle flags. Most terminals mark bundled supply directly. Check what percent is still held, not only what was bought.

Is every bundle a rug?

No. Some devs bundle to stop snipers from taking the supply, and then hold or distribute it. But you are trusting one person with a large share of the coin. Size your position as if they will sell, because many of them do.

See Exhibit 017 for what a bundle exit looks like on a chart.