How liquidity pools work
The mechanism that lets you trade instantly, without a buyer on the other side.
When you buy a token there is often no person selling to you at that exact moment — yet the trade fills instantly. That is a liquidity pool at work. This guide explains automated market makers, how prices are set by a formula, and the risk called impermanent loss.
From order books to pools
Traditional markets match a buyer to a seller through an order book. Decentralized markets often use a different model: an automated market maker (AMM), where trades happen against a shared pool of two assets instead of against another trader.
Anyone can add both assets to the pool as a "liquidity provider" and earn a share of trading fees in return.
Price set by a formula
A common AMM keeps the product of the two reserves constant (the x·y=k rule). When you buy one asset, its share of the pool shrinks and the other grows, so the price automatically rises as the pool rebalances.
This is why large trades move the price more: they take a bigger bite out of the pool. The formula, not a human, quotes every price.
Where this happens on STARTUPOS
STARTUPOS has two ways to launch. An instant launch trades in its own Uniswap V4 pool, created in the same transaction as the token itself. There is no curve to fill and no migration later: the pool is the token’s market for life, and its liquidity is locked permanently. A bonding curve launch trades on a curve first, and when the curve sells out it graduates into its own Uniswap V4 pool whose liquidity is also locked. Both models therefore end in the same kind of market.
One detail matters when you are reading a brand new instant launch. Its pool is opened holding only the token, with no ETH on the other side. The ETH you would sell into is ETH that earlier buyers paid in, so early on there is very little of it and a large sell moves the price a long way down.
Impermanent loss
If you provide liquidity, the pool automatically trades your assets against every buyer and seller. When prices swing a lot, you can end up with less value than if you had simply held the two assets — a difference called impermanent loss.
It is "impermanent" because it can shrink if prices return, but it becomes real if you withdraw while prices are far apart. Fees earned can offset it, but not always.
- AMMs let you trade instantly against a pool instead of a matched counterparty.
- Prices come from a formula on the pool’s reserves, so big trades move price more.
- Providing liquidity earns fees but exposes you to impermanent loss.
References & further reading
Fun tokens are experimental and highly speculative. Prices can move fast in both directions and you could lose everything you put in. Nothing here is investment advice.