#Ethereum rose 70% in Q3 as liquidity declined — There’s one thing about these figures that feels off: $ETH rose about 70% in the third quarter, outperforming $BTC ’s roughly 42% gain, but median order book depth was only 35% to 45% of Bitcoin’s, compared with at least 60% in the same period last year. Prices rose while the order book got thinner — a contradiction, according to the textbooks.

Let’s lay out the facts first: From July 6 to September 30, within 0.15% of the market price, ETH’s bid and ask depth was only about $13 million to $14 million. The report also noted that small retail traders would barely notice, with liquidity on both sides above $1 million. The real bottleneck is for large orders: the same size order has to sweep through more price levels, making it more likely to move the price.

The bullish argument holds up: This rally was mainly driven by ETF demand, with U.S. spot ETH ETFs seeing around $3.1 billion in net inflows. That’s real money buying, and those funds aren’t sitting on the order book — a shallow book is a natural side effect. The bears have a strong counterargument too: Demand came in, but market makers didn’t add depth to their quotes. That suggests the rally was driven more by flows and leverage than by the depth of spot-market trading. If inflows slow, there won’t be much liquidity to absorb sell orders.

My take: What’s rising in this rally is the “balance sheet,” not the “order book.” Thin liquidity doesn’t automatically mean bearish; it changes the nature of the risk — from “directional risk” to “magnitude risk.” Position sizing should be based on how large a wick you can withstand, not on whether you’re right about the direction. As an aside, during the same period, $SOL ’s one-sided depth fell from about $28 million to around $20 million. This isn’t just an ETH story.

If you add to your ETH position in Q4, how would you execute: slowly scale in with limit orders, or wait for a panic wick and buy in one shot at market?

#Ethereum rose 70% in Q3 as liquidity declined