Sei Token Tumbles Amid Altcoin Weakness and Upcoming Supply Catalyst

The Sei (SEI) token has experienced a decline of 3.6% over the past ~42 hours, which is largely attributed to the overall weakness in the altcoin market.

According to CoinMarketCap, SEI's recent performance is not an outlier relative to other altcoins, with the total crypto market cap falling about 2.7% and altcoin market cap also dropping around 2.7% over the same period.

The CMC Fear & Greed Index currently sits at 27, indicating a 'Fear' zone, which suggests that traders are more inclined to sell bounces than buy dips.

A notable supply catalyst for SEI is the upcoming token unlocks, with over $660.8 million of tokens set to unlock in the third week of July 2026.