Key Highlights
- Bitcoin maintained its position around $84,626 on Sunday, registering a daily increase of 0.84% while staying firmly above $84,000.
- The leading cryptocurrency has surged approximately 43.5% during the current quarter, marking its strongest Q3 performance since 2017.
- Spot bitcoin ETFs in the United States attracted $2.4 billion in capital during the previous week, representing the largest weekly influx in almost twelve months.
- Exchange platform Bitget experienced a security breach resulting in $387.5 million in losses, with hackers already transferring $83 million worth of XRP.
- Technical analyst Aksel Kibar identified concerning weekly candle patterns, suggesting potential for a downward correction.
The world’s largest cryptocurrency by market capitalization maintained stability above the $84,000 threshold throughout Sunday trading. Bitcoin was changing hands at $84,626.50 at 01:39 ET, reflecting a daily gain of 0.84%.

The current price level positions Bitcoin near the conclusion of what ranks as its second-strongest third quarter performance historically. Since beginning July around the $58,500 mark, the digital asset has appreciated by approximately 43.5%.
This performance represents Bitcoin’s most impressive Q3 showing since 2017, when the cryptocurrency surged approximately 80%. Meanwhile, Ethereum has outperformed even more dramatically this quarter with gains of roughly 71%, positioning it for its best-ever third quarter.
The leading cryptocurrency also navigated Friday’s substantial quarterly options expiration event without experiencing significant volatility. Spot market trading volumes expanded throughout the week, while market participants demonstrated restraint from aggressive profit-taking behavior.
Bitcoin ETFs Post Strongest Weekly Performance in Nearly a Year
Spot bitcoin exchange-traded funds in the United States recorded net inflows totaling $2.4 billion during the week concluding September 25. This figure represents the most substantial weekly capital influx since October 2025.
These inflows propelled the 2026 cumulative net flows for bitcoin ETFs back into positive territory. Just mid-July, these investment vehicles were showing approximately $5.8 billion in net outflows.
Monday dominated the week’s inflow activity. The dozen tracked bitcoin ETF products collectively absorbed $999 million on that single day, marking the largest one-day inflow recorded since October 2025.
Subsequent trading days witnessed progressively declining inflow figures. Tuesday registered $714.7 million in new capital, while Wednesday saw $347 million. Thursday brought $190.6 million, and Friday concluded the week with $134.5 million.
BlackRock’s IBIT product dominated weekly performance with $1.2 billion in new investments. Fidelity’s FBTC attracted $701.7 million, representing its strongest weekly showing since early September.
Ethereum-focused ETFs similarly reversed their trajectory during the past week. These products attracted $689.9 million in fresh capital, contrasting sharply with the previous week’s $140 million in outflows.
Solana-based investment products established their own benchmark, recording an $86.7 million single-day inflow on Friday, the highest daily total ever recorded for that asset class.
Banking Integration Proposals and Technical Warning Signs
Michael Saylor, Chairman of Strategy, advocated for expanded Bitcoin participation among American banking institutions. He proposed that banks should provide Bitcoin custody services and offer lending products collateralized by the digital asset.
Saylor contended that existing capital requirement frameworks constrain banking sector involvement. He particularly referenced the 1,250% risk weighting assigned to the most speculative cryptocurrency holdings under global banking regulations.
Additionally, he suggested regulatory authorities should establish distinct frameworks for custody operations, lending activities, and direct institutional Bitcoin ownership.
Technical analyst Aksel Kibar highlighted potential warning signals in Bitcoin’s recent price behavior. “As we get close to end of week, the weekly candle does not look like a decisive breakout,” Kibar noted, explaining that genuine breakouts typically generate extended weekly candles, and the current hesitant movement might result in prices retreating to previous trading ranges.
Security concerns remained prominent following Bitget exchange’s $387.5 million security compromise. By Saturday, the perpetrator had relocated approximately $83 million in stolen XRP tokens from three separate wallets, according to CoinDesk reporting, with roughly $75 million remaining in the initial compromise addresses.
Ripple lacks the capability to freeze the compromised XRP holdings directly, as the XRP Ledger’s freezing mechanisms do not extend to its native cryptocurrency. Bitget has confirmed that its protection fund will cover all losses and emphasized that customer account balances remain unaffected.
The exchange has scheduled Bitcoin withdrawal functionality to restart on September 28, with ether withdrawals resuming September 29 and USDT withdrawals becoming available September 30.
The post Bitcoin (BTC) Price Surges 43.5% in Strongest Q3 Performance Since 2017 appeared first on Blockonomi.
This articles is written by : Nermeen Nabil Khear Abdelmalak
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BULLISH: U.S. Bitcoin ETFs just recorded their BIGGEST weekly inflow of 2026