Bitcoin and the US Dollar Index are rising in tandem. This unusual movement has attracted high attention from traders and analysts, who have long relied on the inverse relationship between these two assets for judgment.
Since early August, Bitcoin has surged from around $63,000 to a recent high near $87,000, then slightly pulled back, currently trading around $84,600. In the same period, the US Dollar Index has climbed from a low of 98.40 in early September to above 101.00. The simultaneous strengthening of both breaks a long-standing pattern where Bitcoin typically rises when the dollar weakens, and vice versa.
Bitcoin and gold have long been seen as safe-haven tools against dollar weakness, especially during periods of expected monetary easing or uncertain fiscal prospects. When Bitcoin rises in sync with the dollar, it means other forces are overriding the traditional pull of the dollar on cryptocurrency prices—these may include rising risk appetite, institutional fund allocations, or specific catalysts for Bitcoin itself.
This rally concludes Bitcoin's second-best performing third quarter in history. According to Pluang citing CoinGlass data, Bitcoin accumulated a decline of over 36% in the first half of 2026, but rebounded strongly in the third quarter with a gain of about 43.5%.
Despite the notable divergence, analysts warn against overinterpreting a single overlapping rally. Over multiple cycles, the relationship between Bitcoin and the US Dollar Index (DXY) has fluctuated between weakening and reaffirming, with brief positive correlations in the past, but without breaking the overall inverse trend pattern.
U.Today's Arman Shirinyan wrote: "For now, the US Dollar Index strengthening in tandem with Bitcoin appears more like a temporary decoupling rather than a shift in the long-term pattern." He noted that more valuable signals will emerge in the coming weeks when the dollar continues to rise while Bitcoin holds its gains or experiences a pullback.
Traders are now focusing on upcoming major macroeconomic catalysts—the Federal Reserve's policy statements, inflation data, and changes in market risk sentiment—to determine whether Bitcoin's rally can continue independently of the dollar's movement, or if the historical inverse relationship will ultimately re-dominate the market.