Ethereum hits new highs, but is ETHs rally built on a bubble?

Ethereum

Ethereum hits new highs, but is ETHs rally built on a bubble？

Ethereums 24-hour trading volume shows that derivatives are still doing the heavy lifting.

Between the 10th and 17th of July, daily futures and perpetuals trading ranged from $39.5 billion to a massive $65.3 billion, completely overshadowing spot volumes, which barely nudged above $3 billion.

Even on the 17th of July, with ETF-driven interest spiking, spot activity remained a small slice of the total market action.

Source: Cryptoquant Quicktake

This persistent imbalance shows how little actual buying is backing ETHs rally. The overwhelming share of volume is speculative, likely driven by short-term traders and arbitrage desks.

Until the spot component grows meaningfully, the rallys structure remains vulnerable to sudden unwinding by over-leveraged participants.

Not all that bullish？

Ethereum ETFs just posted a record weekly net inflow of $1.78 billion, pushing total net assets to $17.3 billion.

This looks like a resounding vote of confidence. But dig deeper, and its clear that much of this capital is likely tied to basis trades – delta-neutral strategies that profit from discrepancies between spot and futures prices.

Source: SoSoValue

These aren‘t long-only bets. They’re hedged positions where traders often short futures against ETF longs, applying latent sell pressure to derivatives markets.

This arbitrage dynamic artificially boosts ETF flows without actually indicating directional conviction.

ETH basis return surges

The ‘Basis trade’ is booming again. The 30-day Weighted Annualized ETH Basis Return has surged to 14%, its highest since early March.

That spike reflects widening gaps between spot and futures pricing – fertile ground for arbitrage, but also a warning sign.

Source: Cryptoquant Quicktake

Aggressive basis expansion has usually coincided with highly leveraged market conditions. Traders borrow to exploit spreads, inflating derivatives activity without meaningful spot participation.

The problem？ These flows can reverse fast, especially when funding flips negative or volatility returns.

To sustain the rally, ETH needs more than just basis-driven liquidity. It needs long-only inflows, genuine conviction, and real demand – none of which are clearly visible yet. Without that shift, price strength remains at the mercy of derivatives.