What is circulating supply, and why does it matter more than 'total tokens'?
Understand three related but different numbers first. Max supply: the absolute protocol cap for this token, never to be exceeded — Bitcoin's is 21 million. Total supply: the total number of tokens minted (created) so far, minus burned amounts; may be less than max supply. Circulating supply: among all existing tokens, the portion that's currently freely tradable on the market — excluding team and investor tokens locked in vesting contracts awaiting unlock, excluding reserves held by the official foundation yet to be distributed, and excluding tokens currently staked in smart contracts that can't be freely transferred. Circulating supply matters more than total supply because market price is determined by the supply and demand of tokens that are actually tradable, not tokens that exist theoretically but can't be used. Market cap = circulating supply × price is calculated based on this reality.
How do circulating supply and other supply figures differ? One example explains it.
Using WLD's actual numbers from April 2026. WLD's max supply is 10 billion tokens. As of April 2026, unlocked tokens (released from vesting contracts) were roughly 4.9 billion — i.e. the total supply. But of those 4.9 billion, only about 3.3 billion actually circulated in the market — the rest remain in project and early investor wallets, not necessarily sold. The actual circulating 3.3 billion × the price of $0.27 gives a market cap of roughly $891 million. But using the max supply of 10 billion × $0.27 gives an FDV of roughly $2.7 billion — the 'hypothetical market cap' if all future tokens unlocked at current prices. FDV / market cap = 2.7 / 0.891 ≈ 3x. This means: if demand stays flat, future token unlocks will subject current holders to roughly 3x dilution pressure.
Why is market cap calculated using circulating supply rather than max supply, and what is FDV for?
The answer involves which number better reflects the market's real supply and demand. Using max supply for market cap means treating tokens that won't unlock for five years as if they're already circulating — a severe overstatement of actual market size, in a sense deceiving yourself. Using circulating supply reflects the market size represented by 'tokens actually tradable right now' at 'the current price' — much closer to reality. But circulating market cap has a blind spot: it can severely understate future dilution risk. That's why FDV (Fully Diluted Valuation) exists: it shows you what the project's 'complete market cap' would be if all tokens entered circulation at current prices, helping you judge whether the current valuation has already priced in future token supply. Mature projects (like Bitcoin) have FDV close to 1:1 with market cap because most tokens are already circulating; new projects' FDV/market cap can be 10x or more, representing massive future dilution potential — a risk you must confront before buying.
Circulating supply is a number that can be gamed — how do you spot misreporting?
Yes, the definition and calculation of circulating supply has gray areas in practice, and teams have incentive (and some ability) to adjust it. A few situations to watch for. First, teams count 'distributed but non-circulating' tokens as circulating: e.g. tokens nominally sent to a partner and unlocked, but subject to a transfer restriction in a side agreement — these should count as locked but may be counted as circulating to make the market cap number look better. Second, circulating supply jumps sharply: a sudden spike can indicate locked tokens being reclassified or a large unlock, bringing immediate sell pressure. Third, conflicting circulating supply numbers across data sources: CoinMarketCap and CoinGecko sometimes calculate circulating supply differently for the same token, with gaps of billions — itself a warning sign that the token's supply structure is insufficiently transparent. How to identify: read the project's whitepaper and unlock schedule directly (on-chain tools like Dune Analytics), rather than just trusting CMC's number.
An example that really drives home the destructive power of FDV. During the 2021 DeFi boom, some newly issued DeFi tokens hit seemingly impressive market caps on their first day — for instance 'circulating market cap $50M, seems cheap.' But look at the token allocation: only 2% of total supply was circulating; the remaining 98% was scheduled to unlock over the next two years. That means the true FDV was $2.5 billion. After the DeFi bubble deflated, token prices crashed, and as the locked tokens unlocked and hit the market, they pushed prices down further — forming a death spiral: unlock → mass sell → price drops → more panic selling → more unlocks → continued decline. Many holders realized only afterward that 'I thought I was buying a cheap opportunity at $50M market cap; I was actually buying a systematically-about-to-be-diluted asset at $2.5B market cap.' This is why 'looking at market cap without checking FDV' is one of the most common beginner traps, and the unlock schedule must be considered alongside any buying decision.
The trade-off of using circulating supply as a metric is 'reflecting current market reality' in exchange for 'ignoring future dilution risk.' Looking only at circulating market cap lets you quickly compare current valuation against peers, but without FDV and the unlock schedule you may severely underestimate future supply pressure. The best framework: use circulating market cap to assess 'is the current valuation expensive?', use FDV to assess 'does this project make sense if all supply is released?', and use the unlock schedule to assess 'what does the supply pressure timeline look like over the next 6–12 months?' All three dimensions together make up a complete token valuation analysis.