Bitcoin fell below $78,000 on Saturday, extending a brutal two-day selloff that erased $80 billion in market value. Iran's renewed threats regarding the Strait of Hormuz, a critical global oil chokepoint, drove the downturn as geopolitical tensions mounted.

The drop marks an acceleration of selling pressure that began earlier in the week. Bitcoin's inability to hold above $80,000 signals weakening support at a key psychological level. The token traded near $77,000 at the time of reporting, down sharply from recent highs.

Geopolitical risk typically triggers flight-to-safety trades that pressure speculative assets like Bitcoin. Iran's Hormuz threat raises the stakes for crude oil prices and broader macroeconomic uncertainty. Markets worry that supply disruptions from the Middle East could reignite inflation, forcing the Federal Reserve to maintain higher interest rates longer than expected. Higher rates compress valuations for risk assets across stocks and crypto.

Bitcoin's sensitivity to oil prices and macro headwinds has intensified as institutional adoption expands. Major holdings by MicroStrategy and corporate treasuries mean BTC now moves in lockstep with equity market sentiment. When equities sell off on recession fears or geopolitical shocks, Bitcoin follows.

The $80 billion two-day loss reflects capitulation from retail and leverage traders. On-chain data would show whether long positions faced liquidation cascades on derivatives exchanges. Spot outflows from Bitcoin ETFs could accelerate if the selloff extends into the new trading week.

Support levels below $78,000 become critical. A break below $75,000 would open the door to deeper losses and test conviction among long-term holders. Conversely, stabilization above $77,000 could attract dip buyers, particularly if Hormuz tensions ease or Fed rate expectations soften.

The confluence of geopolitical risk and macro uncertainty leaves Bitcoin vulnerable in the near term. Recovery depends on either a resolution to Iran tensions or a shift in rate expectations from the Fed.