Market cap does not tell you whether you can exit

The short answer

Market cap combines a quoted token price with an estimate of circulating supply. Fully diluted valuation uses a broader supply figure according to the provider's definition. Neither number describes money that has entered the asset, and neither describes what you could realise by selling.

A worked example

Suppose a token's quoted price is $0.001 and reported circulating supply is one billion tokens. The displayed market cap is $1,000,000.

That figure does not mean:

• $1,000,000 has flowed into the asset.
• $1,000,000 sits in the liquidity pool.
• Holders could collectively sell at $0.001.

An actual sale interacts with buyers or with pool reserves. If the pool holds $40,000 of quote asset in total, a $20,000 sell is enormous relative to available depth, and the average execution price will be far below the marginal quote. A displayed portfolio value usually assumes the marginal price applies to every unit you hold. In a thin market that assumption fails badly.

Why provider numbers disagree

Supply is an estimate, not a fact read from one place. Providers differ on whether to exclude burned tokens, treasury allocations, unvested amounts, locked liquidity or bridged representations. Some tokens have mechanics — rebasing, transfer fees, ongoing mint authority — that complicate the calculation entirely.

Two consequences follow. First, two sites can show different market caps for the same asset and both be internally consistent. Second, an unavailable supply field means unknown, not zero. A tool that renders a missing value as 0 or omits it silently is making your decision worse.

What to inspect instead

For the specific question "can I exit this size", look at:

• The pool or route your quote came from, and its quote asset.
• Reserve depth, and your intended size as a proportion of it.
• Whether liquidity is fragmented across multiple pools, and which one your route would actually use.
• Recent trade sizes, not just aggregate volume.
• Expected costs on both sides of the round trip.
• Any transfer restriction, tax or permission that could change the arithmetic.

Pool reserve ratios give useful context, but concentrated liquidity, multiple routes, dynamic fees and moving prices all complicate simple estimates. A current executable quote for your actual size is more relevant to an exit than multiplying a chart price by your balance.

Common mistakes

• Treating a low unit price as "cheap". A $0.000001 token with a quadrillion supply is not cheaper than a $100 token; price per unit means nothing without supply.
• Comparing a new token's market cap to a large established asset as if the comparison implies a path.
• Reading FDV as a debt the market must repay, or as an upper bound on price.
• Using an unrealised portfolio figure as though it were cash.

What this evidence cannot establish

Depth today does not predict depth tomorrow. Liquidity can be withdrawn, migrated or locked; a route can disappear. Even an executable quote is only valid for a short window. The honest framing is: what evidence suggests this amount can be sold through an accessible route, and what could change before execution?

Checklist

• Which pool or route is the displayed price from?
• What is my size as a share of executable depth?
• Is the supply figure current, and is it the provider's estimate or the contract's total?
• Are there fees or restrictions that change the sale amount?
• Have I taken a quote for my actual size rather than multiplying the chart price?