SpaceX's Bitcoin holdings have decreased in value by $300 million due to a recent decline in Bitcoin prices. The company currently holds over 8,000 Bitcoin, now valued at $687.6 million, down from $1.03 billion as of October 7. According to Arkham data, there have been no significant movements in SpaceX's Bitcoin wallet, indicating that the loss is attributed to market price changes rather than asset sales. The portfolio experienced a 2.3% drop in the last 24 hours, reflecting the broader weakness in Bitcoin prices. Analysts remain cautious, with mixed signals from Bitcoin price prediction models.