How it works

Two ways to ask “what if”. Here’s an example with ETH and BTC.

Market cap

What if ETH had BTC's market cap?

We give ETH the same market cap as BTC, then divide by the supply used for ETH. NOW uses the current market cap of BTC; ATH uses its historical high.

Peak ratio

What if ETH hit its peak BTC ratio?

We find the highest recorded ETH/BTC price ratio in our available daily history, then apply it to the price of BTC today. This shows what one ETH would cost if it regained that relative strength.

Use the question below your result to flip between the two modes.

What if A had B's market cap?

Select A
Select B

BUIDL at a $5B market cap

As of Sep 14, 2026, if BlackRock USD Institutional Digital Liquidity Fund (BUIDL) had a market cap of $5B, one BUIDL would be worth $1.82, 1.82x its current price of $1.00. Its market cap today is $2.75B.

Price of BlackRock USD Institutional Digital Liquidity Fund at a $5B market cap: ($5B ÷ $2.75B) × $1.00 = $1.82.

Questions

What would BUIDL be worth at a $5B market cap?
BlackRock USD Institutional Digital Liquidity Fund (BUIDL) would be worth $1.82 per coin at a $5B market cap. That is 1.82x its price of $1.00 on Sep 14, 2026.
How much would BlackRock USD Institutional Digital Liquidity Fund need to grow to reach a $5B market cap?
BlackRock USD Institutional Digital Liquidity Fund would need to grow 1.82x. Its market cap is $2.75B today.

Data: CoinGecko, refreshed daily. Last update Sep 14, 2026.