S&P 500 and Bitcoin fall as Brent crude oil prices surge.

• Bitcoin falls amid tensions between the US and Iran.
• Oil prices put pressure on the cryptocurrency market.
• The S&P 500 is down today, along with the Nasdaq.

The escalating geopolitical tension involving Iran put pressure on financial markets at the start of this week and triggered a new wave of selling in the cryptocurrency sector. Current US President Donald Trump stated on Sunday that "time is running out" for a nuclear deal with Tehran, raising concerns among global investors.

The reaction was immediate in the energy market. Brent crude oil reached $112 a barrel overnight before partially retreating to $111,32, still up 1,89% for the day. The movement increased pressure on risk assets and heightened caution among global investors.

In traditional markets, the S&P 500 fell today to 7.365,71 points, down 0,58%. The Nasdaq retreated 1,10%, trading at 25.936,96 points, while the Dow 30 dropped 0,15% to 49.450,81 points. The Russell 2000 also followed the negative trend, losing 0,94%.

The VIX index, known as Wall Street's volatility indicator, remained at 18,34 points. Meanwhile, gold traded with a moderate decline of 0,28%, at US$4.549,20, showing that some investors still maintained defensive positions in the face of increased international tension.

In the cryptocurrency sector, Bitcoin fell to US$76.321,74, accumulating a daily loss of 2,44%. The leading cryptocurrency in the market lost the support level of US$77 and extended the negative streak observed in recent days.

Ethereum retreated to near $2.100, while Solana fell to $84. XRP traded near $1,38 amid deteriorating market sentiment.

Data from the Fear and Greed Index showed a significant worsening in investor sentiment. The indicator, which was at 48 points a few days ago, plummeted to 28, entering the zone classified as "Fear." This movement signals a relevant increase in caution regarding cryptocurrencies.

The pressure from oil prices on markets goes beyond the impact on energy. Higher energy costs increase inflationary concerns and reduce expectations of interest rate cuts by the Federal Reserve. This scenario often directly affects technology stocks and also the performance of Bitcoin.

Despite often being referred to as "digital gold," Bitcoin has once again shown a strong correlation with risk assets amid rising international tensions. This behavior reinforces the perception that large institutional investors continue to treat cryptocurrencies similarly to traditional stock markets during periods of economic stress.

The $76 level is being closely monitored by Bitcoin investors. A price remaining below this range could open the door to further sell-offs should the diplomatic conflict involving Iran continue to escalate in the coming days.