Ether posted a 70% rally throughout the third quarter of 2026, outperforming Bitcoin, which recorded a 42% gain over the same period. According to CoinDesk data, ETH is currently trading around $2,696, while Bitcoin hovers near the $85,502 mark.
Yet behind the green price percentages, the underlying strength in exchange order books tells the opposite story.
Plunging Market Depth
ETH’s daily market depth between July 6 and September 30 lingered at just 35% to 45% compared to Bitcoin’s liquidity. A CoinGecko research report noted that this contraction is a stark contrast to the same period last year, when the ETH-to-BTC liquidity ratio held at a minimum of 60%.
CoinGecko described the decline in ETH liquidity as a sharp slump. On the ground, ETH holds $13 million to $14 million in market depth within 0.15% of the mid-price. Order book depth at this level is sufficient to handle orders from retail traders, but too thin to accommodate executions from large-scale capital flows.
The drying order book trend has also hit Solana. SOL’s market depth within 2% of the trading price slid to around $20 million per side, down from $28 million last year.
SOL’s daily activity remains robust despite thinning exchange liquidity. XRP’s market cap is 40% larger than Solana’s, yet SOL’s daily trading volume led XRP by 25%, according to the same report.
Impact of Thin Order Books on Traders
Third-quarter liquidity data shatters a classic assumption among crypto investors. Many believe that price surges automatically deepen order books and draw in more active traders. Exchange realities prove that ETH’s 70% price rally occurred alongside a shrinking pool of queued liquid assets.
Thin markets accelerate price slippage during execution. Large buy and sell orders can easily clear out the nearest order queues, forcing subsequent orders to execute at worse prices. Slippage risk - the gap between the target price and the final execution figure - immediately rises for traders, particularly when the market reacts to rallies or sharp sell-offs.
Execution price risks are compounded by mounting pressure from within the Ethereum network. ETH’s unstaking queue has surged 392% since the start of October. For market participants, thin order books mean placing large orders amid heightened liquidity uncertainty that can drive up additional transaction costs.
Reported by CoinDesk.
Read also: How Crypto Staking Works and Its Risks
Read also: Pay for AI Without Being Tracked - Ethereum Launches zkAPI on Mainnet Powered by ZK Proofs
Disclaimer: This article is for informational and educational purposes only, not financial advice. Cryptocurrency assets are highly volatile and carry significant risk. Always do your own research (DYOR) and never invest more than you can afford to lose.
