Bitcoin drops 1.5% in 24h, altcoins including SIREN suffer sharp declines amid weak market sentiment

Bitcoin lost 1.5% in the last 24 hours and over 15% in the past week, dragging down altcoins which saw a 9.7% market cap drop. The memecoin sector also fell 10%, with weak altcoins like SIREN losing 12% in a day alongside declining trading volume and interest, signaling low risk appetite. Despite a brief rally on June 4, SIREN failed to hold key support levels and is expected to fall further toward $0.575 and $0.48. The overall bearish pressure on Bitcoin continues to weigh heavily on altcoin prices and market sentiment.