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
Sticker Wall
$1/day·$5/day on top of another coin 😈
Your coin could be up here

EURSAFO vs ARB market cap comparison

As of Sep 17, 2026, if Spiko Amundi Overnight Swap Fund (EUR) (EURSAFO) had Arbitrum's (ARB) market cap of $1.21B, one EURSAFO would be worth $1.01, 0.873x its current price of $1.16.

At Arbitrum's all-time-high market cap of $16.22B (Jan 12, 2024), EURSAFO would be worth $13.52 (11.66x).

Arbitrum is 0.873x the size of Spiko Amundi Overnight Swap Fund (EUR) by market cap. The rank gap between them is 8 places.

The gap between EURSAFO and ARB widened 0.98% since Sep 17, 2026.

MetricSpiko Amundi Overnight Swap Fund (EUR) (EURSAFO)Arbitrum (ARB)
Price (USD)$1.16$0.179
Market cap (USD)$1.39B$1.21B
Market cap rank#60#68
Circulating supply1.2B EURSAFO6.79B ARB
24h change+0.11%+9.45%

Price of Spiko Amundi Overnight Swap Fund (EUR) at Arbitrum's market cap: ($1.21B ÷ $1.39B) × $1.16 = $1.01.

Questions

What would EURSAFO be worth with Arbitrum's market cap?
Spiko Amundi Overnight Swap Fund (EUR) (EURSAFO) would be worth $1.01 per coin with Arbitrum's market cap of $1.21B. That is 0.873x its price of $1.16 on Sep 17, 2026.
How many times would EURSAFO need to grow to reach Arbitrum's market cap?
Spiko Amundi Overnight Swap Fund (EUR) would need to grow 0.873x. Its market cap is $1.39B and Arbitrum's market cap is $1.21B.
How is the EURSAFO price at ARB's market cap calculated?
Price of Spiko Amundi Overnight Swap Fund (EUR) at Arbitrum's market cap: ($1.21B ÷ $1.39B) × $1.16 = $1.01.

Data provided by CoinGecko. Refreshed daily. Last update Sep 17, 2026.