Bitcoin is on course to close Q3 2026 with a 43.5 percent gain, climbing from $58,500 at the start of July to approximately $84,000 by the end of September. This performance positions Q3 2026 as Bitcoin's second-best third quarter on record, trailing only 2017, when the asset surged about 80.4 percent.
Ethereum delivered stronger performance. ETH gained around 71 percent during the period, surpassing its previous Q3 record of approximately 66.5 percent set in 2025. If ETH holds current levels, this marks Q3 2026 as Ethereum's strongest third-quarter performance ever.
Bitcoin's recent price surge drew substantial institutional demand. U.S. spot Bitcoin exchange-traded funds attracted approximately $2.39 billion in net inflows from Sept. 21 to Sept. 24 alone, according to CoinGlass data. Sept. 21 marked the strongest day within this period, registering $999 million in net inflows.
The rally was driven by activity in derivatives markets, capital flowing through ETFs, and increased spot-market demand. This broad-based buying pressure indicates robust investor interest beyond speculative trading.
Market participants also navigated a major quarterly options expiry on Sept. 25. The total notional value of expiring Bitcoin and Ethereum options neared $18 billion, with about $16 billion tied specifically to Bitcoin. Bitcoin maintained stability around the mid-$80,000 range despite the potential for increased volatility around such events.
Analysts expect the next significant resistance zone for Bitcoin to materialize between $98,000 and $100,000.
