The balance of available Ether (ETH) across crypto exchanges dropped to a five-year low on May 26, bringing the total amount of Ether held on exchanges to 17.86 million. A drastic decline in the exchange supply of ETH like this has not been seen since April 2018.

According to Glassnode data, only 14.85% of the total Ether supply is currently held on centralized exchanges, compared with the 25–26% of supply held during the 2021 bull run.

The decline in Ether exchange balances. Source: Glassnode

The drop in ETH supply began in September 2022, dropping significantly after the FTX crisis in November. Apart from a decline in the exchange balance, Ethereum wallet addresses holding more than 100 ETH have also declined to a six-month low.

Two significant events could have influenced the decline in ETH balances on centralized exchanges in the recent past. The first is the collapse of the FTX crypto exchange, prompting many to move their crypto assets from exchange wallets to self-custody wallets; the second, and most important, is the Shapella upgrade.

Shapella made way for thousands of validators to withdraw their staked ETH. However, contrary to popular belief, a minority of validators decided to unstake, while the majority only withdrew their staking rewards.

The movement of assets away from exchanges is considered a bullish sign, indicating traders are not looking to sell at the current price. In Ethereum’s case, re-staking ETH is the most apparent reason for the declining exchange supply.

Related: Ethereum price metrics hint that ETH might not sell off after the Shapella hard fork

Major crypto exchanges like Binance, Bitfinex, Kraken and others that supported the Shapella upgrade saw a significant outflow of ETH from their exchange wallets, leading to the current balance decline.

ETH withdrawal from crypto exchanges. Source: Nansen

As Cointelegraph reported earlier, in the week after the Shapella upgrade, the amount of ETH being staked surpassed the amount of ETH being withdrawn. Another report from Glassnode estimated that less than 1% of staked ETH was expected to be sold. Thus, a significant chunk of ETH moving away from centralized exchanges returned to staking.

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