The cryptocurrency market is heading toward the end of the third quarter with performance that stands in stark contrast to its historically sluggish summer season. BTC/USD is on course for one of its strongest third-quarter performances on record, while Ethereum has already surpassed its previous quarterly benchmark.

Bitcoin has climbed from around $58,500 at the start of July to approximately $84,000, a gain of roughly 43.5%. If BTC holds those levels through the end of September, Q3 2026 would rank as its second-best third-quarter performance ever, surpassed only by 2017, when Bitcoin surged about 80.4%. Quarter-by-quarter comparisons like this one serve as a benchmark for how unusual the current move is, putting the rally in perspective against Bitcoin's longer seasonal history.

Ethereum has performed even more strongly. ETH has gained around 71% during the third quarter, comfortably exceeding its previous Q3 record of approximately 66.5%, set in 2025. If Ethereum maintains its current levels through the end of September, Q3 2026 will mark the asset's strongest third-quarter performance on record. (Source: CoinGlass)

ETF Inflows Add Support to the BTC/USD Rally

Bitcoin's recent surge has been supported by a resurgence in institutional demand. According to CoinGlass data, U.S. spot Bitcoin exchange-traded funds (ETFs) attracted approximately $2.39 billion in net inflows from September 21 to September 24 alone. September 21 was the strongest day of that period, with net inflows reaching $999 million. Because spot ETFs purchase and hold Bitcoin directly, net inflows into these products reflect fresh buying by the funds themselves, which is why their daily figures have become a closely followed gauge of institutional participation in the market.

The rally is being bolstered not only by activity in the derivatives market but also by capital flowing through ETFs and increased spot-market demand.

The market also navigated a major quarterly options expiry on September 25. As previously reported, the total notional value of expiring Bitcoin and Ethereum options neared $18 billion, with about $16 billion tied to Bitcoin. Expiries of this scale draw particular attention from traders because a large volume of derivative contracts settles at once, a dynamic that can amplify price swings around the event. Despite the potential for increased volatility, Bitcoin remained stable around the mid-$80,000 range. (Source: CoinGlass)

Bitcoin Enters Q4 in Strong Shape, but Serious Resistance Lies Ahead

Following a strong third quarter, attention is gradually turning to levels that could limit the next phase of the recovery. The next significant resistance zone is expected around $98,000 to $100,000. Zones of this kind mark price areas where selling pressure has previously capped advances, and they are monitored for early signs that momentum is cooling.

A robust third quarter, however, does not guarantee that the rally will continue. The key question is whether buyers can keep absorbing supply after BTC/USD has risen more than 40% and Ethereum (ETH) has gained more than 70% this quarter.

Historically, the fourth quarter has been stronger for the crypto market than the third. This year, however, Bitcoin and Ethereum are entering the fourth quarter after already posting substantial gains. Going forward, price action will likely depend more on the durability of ETF inflows, spot demand, and investor behavior at these elevated price levels.

Source: 99Bitcoins