By Marcus Reed
Bitcoin eased on Friday as financial markets reacted to rising geopolitical tensions between the U.S. and Iran and as traders grew cautious ahead of a key U.S. inflation release. The world's largest cryptocurrency fell 1.7% to $77,197.6 by 01:51 ET (05:51 GMT), ending the session down and registering a roughly 3% drop for the week after snapping a three-week winning streak.
Risk appetite across the crypto sector cooled alongside Bitcoin. Market participants cited concerns about the U.S.-Iran situation and the potential for higher interest rates as drivers of some profit-taking after a vigorous early-September rally in digital assets.
Geopolitical pressure and energy markets
Markets moved into a risk-off mode as investors digested a spate of aggressive incidents affecting shipping that were described as some of the worst attacks on maritime traffic since the conflict began in late-February. The emergence of a new confrontation between Yemen's Houthis and Saudi Arabia further amplified worries about disruptions to energy flows.
Those developments coincided with a pronounced jump in oil prices - a rise of over 11% during the week - which heightened concern that energy-driven inflation could accelerate. Some of the oil gains eased after a Financial Times report said Iran and Oman were due to meet Gulf states next week to discuss a plan to reopen the Strait of Hormuz, but the initial surge nevertheless reinforced fears about upward pressure on consumer prices.
Monetary policy backdrop and market positioning
Monetary policy expectations were another focal point for investors. Both the Federal Reserve and the Bank of Japan are scheduled to meet next week, and markets were positioned for potential rate hikes. Recent U.S. producer price index data released this week added to bets on a Fed rate increase.
Traders also entered the CPI release with caution. Friday's consumer price index print was widely expected to show inflation holding steady in August. Any signs of rising inflation could reinforce market expectations for another Fed rate hike - an outcome typically viewed as unfavorable for risk assets such as cryptocurrencies.
Altcoins and broader market moves
Other digital assets tracked Bitcoin's decline. Ether slipped 0.5% to $2,468.17, while XRP fell 2.7%. Solana and Cardano each dropped by more than 2%, BNB declined 0.7%, Dogecoin fell 2%, and the token $TRUMP lost 0.8%.
Rising U.S. Treasury yields during the week also exerted downward pressure on cryptocurrencies, according to market commentary, compounding the effects of geopolitics and rate expectations on the sector.
Bottom line
Heightened U.S.-Iran military tensions and an uptick in oil prices, combined with investor focus on upcoming central bank decisions and U.S. inflation data, moved traders away from risk assets and helped drive a pullback in cryptocurrencies after recent gains.