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Supply and Market Cap

Dispatches from D47K

September 29, 2025

Posts and notes on trust, blockchains, and the messy history in between.

SupplyMarket capValuation

Why supply matters

Price alone is a bad compass. A token trading at $0.10 can be “bigger” than one trading at $40,000 if it has billions in circulation. Market cap—circulating supply multiplied by current price—is the better lens.

Supply also moves over time. New issuance, unlocks, burns, and lost coins all change the float. If you ignore those levers, you’re guessing in the dark about how heavy (or light) a token really is.

Circulating vs. max supply

Circulating supply is what’s out in the wild right now—held in wallets or on exchanges. It can rise as new coins are mined or minted, and fall when coins are burned or lost.

Max supply is the hard ceiling coded into many networks (e.g., 21 million for Bitcoin). Some assets have no fixed cap; others burn tokens on schedule to shrink supply.

Lost keys matter. Coins sent to burn addresses or locked behind lost seeds never come back. That can tighten real float, even if max supply is unchanged.

Supply over time (illustrative)
Year Circulating supply Max supply Notes
Launch 0.5B 10B Genesis + small issuance
Year 2 2B 10B Rewards + team unlocks
Year 4 5B 10B Mid-curve; some burns
Year 8 8B 10B Near max; unlocks taper
Circulating changes as rewards, unlocks, burns, and lost coins shift the float. Max may stay fixed.

Market cap: the quick math

Market Cap = Circulating Supply × Current Price.

Example (Jan 11, 2022 numbers): Bitcoin ~18.9M coins × ~$42,784 ≈ $809B. Dogecoin ~132B coins × ~$0.15 ≈ $20B. Same “cheap” coin, massive supply, much smaller cap.

Fully Diluted Value (FDV) = Max Supply × Current Price. FDV shows the “priced-in” valuation if every promised token existed today. If FDV is enormous and unlocks are coming, expect pressure when those tokens hit the market.

Cap math (illustrative)
Asset Circulating Max Price Mkt cap FDV
Token X 1B 10B $0.50 $0.5B $5B
Token Y 100M 150M $10 $1B $1.5B
Token Z 20B 20B $0.05 $1B $1B
Cheap price doesn’t mean small cap; FDV shows the weight if all tokens existed.

Common traps

“It’s under $1, so it’s early.” Not if the supply is in the tens of billions. If that token hit $40,000, the cap might dwarf the entire crypto market by orders of magnitude.

Inflation vs. deflation. Coins with ongoing issuance may face sell pressure; coins that burn supply can create scarcity. Both dynamics hit price.

Fully diluted valuation. For tokens with large unminted allocations, compute the fully diluted market cap (max supply × current price) to see the potential future weight.

Unlock cliffs. Team/investor unlocks can release big chunks of supply on specific dates. A thin market can’t absorb that without price impact.

Liquidity vs. headline cap. A large market cap on paper can hide shallow liquidity. Check order-book depth or on-chain liquidity before assuming size equals stability.

Compare market caps, not just prices

To gauge upside, compare market caps of similar assets. Recalculate what a token’s price would be if it matched a peer’s market cap—while adjusting for supply. That keeps you from comparing apples to space shuttles.

Example: If Token A has 1B supply and Token B has 20B, a $10 price on A is the same market cap as $0.50 on B. Cap is the anchor; price is just cap divided by supply.

Checklist before you ape

Check circulating, total, and max supply. Check FDV. Read the vesting schedule. See who holds the top wallets. Look at actual liquidity, not just cap. Then decide if the story fits the math.