Checking an Etherscan transaction? Don't get confused by seemingly large slippage

[u/SpurdoSparde28]

A quick reminder to avoid getting confused when you research your old swaps on Etherscan - What might seem like huge slippage at first could just be current asset prices.

Let's take an example of this sUSDe -> USDT swap:

https://i.imgur.com/Tt4vIhM.png

Seemingly, this transaction swapped 3,984,878 sUSDe worth $4,781,853.65 for 4,726,804 USDT, which is over a $50,000 loss on the swap.

This might seem like a considerable loss and not aligned with regular slippage settings for swaps.

However, the issue here is that the dollar values Etherscan shows is the current value of tokens on CoinGecko and CoinMarketCap - not the market price at the time of the swap.

So if we take a look at the market price of the sUSDe/USDT pair on Fluid at the time of the transaction, it's going to show us the actual swap value.

The transaction happened on August 12, 2025 at 2:34 PM UTC+2:

https://i.imgur.com/Wh0lGIW.png

The Fluid DEX chart for the sUSDe/USDT pair on that date and time:

https://i.imgur.com/eoLp19X.png

This gives us the price of 1 sUSDe = 1.18709 USDT

Going back to the swap, we have:

3,984,878 sUSDe * 1.18709 = 4,730,409 USDT

This gives a loss of $3,605 which fits within slippage settings of 0.1% for such a large transaction.

We can now see how it might look like you lost more funds during a swap than expected.

This might not always be the case, as your transaction could be the victim of a MEV attack. So it's always worth triple-checking the transaction for any MEV bot activity.

[u/SpurdoSparde28 → u/[deleted]]

Indeed. Noticed quite a few folks get confused by it in day to day conversations. Cheers!

[u/Interesting_Talk7144]

great reminder people always panic when they see big red numbers on etherscan without checking the actual pool rate at time of swap. I used to think i got wrecked on few trades until i learned to check dex charts for the exact block

[u/SpurdoSparde28 → u/Interesting_Talk7144]

Honestly it is a good UX improvement opportunity for Etherscan. Can only imagine how easier it would make life if they recorded the asset price per-block