因追加保证金而强制出售股票，中国天瑞集团水泥股份有限公司股价下跌 99%。 99% stock drop of China Tianrui Group Cement Co. due to margin call-induced forced share sale.

中国天瑞集团水泥股份有限公司股价暴跌99%，原因是其大股东要求追加保证金，导致4.53%的股份被强制抛售。 China Tianrui Group Cement Co.'s stock drop by 99% was triggered by a margin call involving a major shareholder, causing shares worth 4.53% of total value to be forcibly sold. 此次暴跌使得天瑞的市值几乎全部蒸发。 This plunge wiped out nearly all of Tianrui's market value. 其股价的突然大幅下跌凸显了股权集中度高和涉及股东保证金账户的中国公司的风险。 The sudden and steep fall of its shares highlights the risks associated with Chinese companies with high shareholding concentration and those involved in owners' margin accounts.