Crypto
Bitcoin Just Closed Its Second Best Third Quarter Ever, While Ethereum Set a Brand New Record
Bitcoin gained roughly 43.5 percent in the third quarter of 2026, climbing from about $58,500 at the start of July to around $84,000 as September winds down. That puts the quarter on track to become Bitcoin's second best third quarter ever, behind only the 80.4 percent surge of 2017. Ethereum did even better. Ether rose about 71 percent, beating its previous third quarter record of 66.5 percent from 2025. The numbers come from Coinglass, and both records stand with only a few trading days left in the quarter.
The third quarter is usually crypto's quiet stretch. July, August, and September have a long history of flat or modest returns next to the stronger fourth quarter. This year the quiet quarter became the loud one. Bitcoin posted its best third quarter since 2013. Ethereum posted its strongest summer rally on record. Analyst Luciano called the combination extraordinary on X, writing that it is the second best quarter ever recorded for BTC and the best quarter ETH has ever had.
The bid underneath the rally looks institutional. US spot Bitcoin ETFs drew about $2.39 billion in net inflows from September 21 to September 24 alone, with September 21 landing $999 million in a single day, according to Coinglass. Spot trading volume has been rising, and profit taking has stayed lighter than at previous peaks. Then came the September 25 quarterly options expiry, carrying about $18 billion in notional value, and Bitcoin held the mid $80,000s straight through it. A rally that survives its biggest derivatives hurdle of the quarter is a rally built on real buying.
Ethereum's setup deserves its own line. Record quarterly momentum, strengthening ETF and spot demand, and an upgrade pipeline that keeps giving traders something to price in, including the serious discussion this week around moving from 12 second blocks to 10 second blocks. When the market's second asset outruns the first by nearly 30 points in a quarter, capital is rewarding the network that ships upgrades.
What comes next is where it gets interesting. The fourth quarter has historically been crypto's strongest, and this year the market enters it already standing on a record third quarter. Glassnode's latest buyer map shows dry powder waiting at the sidelines, and the next meaningful resistance sits near the $96,700 mean MVRV level, with the psychological $100,000 line just above. A strong summer guarantees nothing about autumn, but it changes the launchpad.
For holders, the quarter rewarded patience through every September curse narrative. For builders, the ETF and spot bid is the institutional plumbing doing exactly what it was designed to do. And for everyone watching, the takeaway is plain. The market's two largest assets just turned their sleepiest quarter into their strongest, with light profit taking and heavyweight buyers still in the room. The fourth quarter starts from strength.
Quick answers
What is this story about?
Bitcoin gained roughly 43.5 percent in the third quarter of 2026, climbing from about $58,500 at the start of July to around $84,000 as September winds down. That puts the quarter on track to become Bitcoin's second best third quarter ever, behind only the 80.4 percent surge of 2017. Ethereum did even better. Ether rose about 71 percent, beating its previous third quarter record of 66.5 percent from 2025. The numbers come from Coinglass, and both records stand with only a few trading days left in the quarter.
Why does this story matter?
For holders, the quarter rewarded patience through every September curse narrative. For builders, the ETF and spot bid is the institutional plumbing doing exactly what it was designed to do. And for everyone watching, the takeaway is plain. The market's two largest assets just turned their sleepiest quarter into their strongest, with light profit taking and heavyweight buyers still in the room. The fourth quarter starts from strength.
Sources
- CryptoNews, Bitcoin price gains 44 percent for second best Q3 as Ethereum jumps 71 percent, September 26, 2026
- 99Bitcoins, BTC USD gains momentum as it posts super strong Q3 numbers, September 2026
- CaptainAltcoin, Where Bitcoin and Ethereum prices might go this week, September 27, 2026
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