Silver prices plunged more than 10% to $72 per ounce following the CME Group's decision to increase margin requirements for silver futures. This adjustment, effective Monday, comes after a routine review of market volatility and is likely to prompt leveraged traders to reduce their positions, impacting the risk-to-reward dynamics. The move also affected other precious metals, with gold dropping nearly 5% to $4,325 per ounce. Copper and platinum experienced significant declines as well, reflecting broader market reactions to the increased margin requirements.