What caught my attention with Ethereum is not just the 70.8% gain in Q3.

It is how quickly ETH changed its position after two difficult quarters.

Ethereum lost around 29.26% in Q1 and another 25.28% in Q2. Then Q3 delivered a 70.8% recovery. That was stronger than its previous quarterly high of 66.55% in Q3 2025.

ETH also outperformed Bitcoin by 42.71% during the quarter.

But I would not assume that one strong quarter guarantees another.

Historical data gives a reason to stay cautious. Ethereum's median Q4 return is reportedly around 0.36% compared with a historical average of 16.97%. Past returns do not predict the next quarter but they show why momentum alone is not enough.

The whale activity is also interesting.

A wallet associated with Ethereum co-founder Joseph Lubin transferred 133,298 ETH worth around $356.2M into a new wallet. This is a significant movement but it was not a direct exchange deposit. I would not treat it as confirmed selling or buying.

Another whale opened a $40.6M ETH long alongside a $33.62M Bitcoin short. That position is more interesting because it is designed to benefit from ETH outperforming BTC rather than simply betting on the entire market rising.

Now I am watching the ETH/BTC ratio.

It moved from around 0.0316 to 0.0325 before pulling back. Buyers defended the 0.0319 area and pushed it back toward 0.0323.

That level matters because ETH needs to maintain relative strength if the Q3 trend is going to continue.

Derivatives positioning is active too. Hyperliquid ETH open interest reportedly exceeds $3.1B while funding remains mildly positive around 0.00125% hourly.

That suggests long positioning is present but it also means leverage deserves attention.

For me the important question in Q4 is whether spot demand can support ETH while the ETH/BTC ratio continues holding higher levels.

If spot activity weakens then crowded expectations could unwind quickly.

ETH has already proved it can outperform Bitcoin for one quarter.

Now it needs to prove that the move has enough demand behind it to continue.