Bitcoin's price stability is under scrutiny as it hovers near a critical long-term support line, causing bulls to brace for potential volatility. However, a key indicator has already signaled a bearish trend, as the shares of the largest publicly listed BTC holder, Strategy (MSTR), have slipped below the 100-week simple moving average (SMA), a trusted metric for technical analysts. This 100-week SMA, which represents the average price over roughly two years, has been a crucial safety net for Bitcoin, halting its decline from record highs above $126,000 for three weeks. A break below this average could trigger a cascade of events, with frustrated holders potentially selling more and bears gaining confidence, leading to deeper price declines. This scenario played out in November when MicroStrategy's shares dropped to $220, piercing the 100-week SMA, and have since fallen to $160, a 60% decline from their year-to-date high. This development is significant for BTC bulls, as MSTR's earlier breach of the 50-week SMA had a similar impact on Bitcoin's price. The critical takeaway is that bulls must defend the 100-week SMA to prevent a potential downward spiral, as prices risk following MSTR's path into deeper losses. If bulls can maintain prices above this average, it could signal a bullish rebound, acting as a safety net and trampoline for a strong recovery. Meanwhile, the crypto market continues to face challenges, with overall capitalization falling below $3 trillion for the third time in a month, despite moderate gains in major Asian equity indices driven by fiscal stimulus expectations from Beijing. This contrast highlights the ongoing volatility and uncertainty in the crypto space, as large-cap assets, particularly those with ETF exposure, experience selling pressure as institutional investors reassess risk.