Bitcoin (BTC) is trading below its 2026 opening price as the third quarter approaches its close, having recorded a gain of just over 40%. This performance marks the asset's best Q3 since 2017, significantly outpacing the average Q3 return of 8.6% observed since 2013. Despite this strength, BTC/USD fell under $83,000 to reach one-week lows following Sunday’s weekly close, driven by broader market declines linked to potential fresh US strikes on Iran. The weekly close at $84,450 remains the highest level for the pair since late January.

Market structure analysis indicates artificial barriers to upside, with $30 million in ask liquidity clustered around $85,700 on Monday, causing spot prices to accelerate downward. Critical reference levels include the 2026 yearly open at $88,700 and the cost basis for US spot Bitcoin exchange-traded fund investors at approximately $86,000. Conversely, support zones are identified at the corporate treasury cost basis of $80,500 and the True Market Mean near $76,700. Recent buyers, who acquired BTC between one and four weeks ago at an aggregate cost basis of $78,300, remain in profit according to CryptoQuant data. Analyst Rekt Capital highlights $82,500 as a pivotal support level; retaining it would confirm an inverse head-and-shoulders pattern, whereas failure could revert prices to the $60,000-$80,000 range.