CMC Markets专栏：离岸人民币大幅贬值 央行暂停部分外资银行跨境外汇业务
【CMC Markets专栏：离岸人民币大幅贬值 央行暂停部分外资银行跨境外汇业务】由于近日在岸人民币与离岸人民币价差急速扩大， 为稳定人民币币值, 防止跨境套利行为, 中国央行暂停了至少3家外资银行的跨境外汇业务至3月底. 据路透社消息，被暂停的业务包括清算客户现货头寸与一些其他的相关跨境、在岸与离岸业务。德意志银行为被暂停外汇业务的银行之一。
自央行在8月11日实行人民币对美元贬值1.9个百分点后, 人民币便打开来持续的跌势. 尤其是离岸人民币贬值速度更为突出。截至今日，在岸人民币与美元汇率为6.4902， 离岸人民币对美元汇率为6.5760，价差达858点。 而在昨日上午时分，两者差价一度超逾1200点。周三，国家外汇管理局表示其将防止非正常跨境资本流动。据有关人士表示，由于近期价差扩大，此举措是为抑制外汇交易套利行为。
自从中国央行汇改以后，人民币便持续贬值， 主要是由于央行对于汇率的管制逐步放开，实行由市场自动调节汇率的机制。这也是支持人民币成为国际储备货币的重要举措。在人民币被批准加入国际货币基金组织特别提款权（SDR）以后，受国际金融环境影响，离岸人民币对美元再次出现大幅度贬值以致在岸与离岸人民币汇率出现史上几乎最大。
在岸人民币与离岸人民币对美元现价汇率走势
数据来源：布伦伯格
套利交易将鼓励购汇行为，将导致外汇储备量减少。2015年，为稳定币值，中国央行动用了近4000千亿美元的外汇储备量。前摩根士丹利首席执行官John Mack在布伦伯格的电视采访中表示：“（中国央行）他们做的是对的”。“中国是为最小化市场波动。当套利交易被建仓后，将引发更多人加入此交易， 这将导致很大的市场波动”。中国央行将部分外资银行的外汇业务暂行以在短期内冷却市场的此种行为，是为减少过度套利行为引起大幅波动而带来不良影响。
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Investing in CFDs carries significant risks and is not suitable for all investors. Losses can exceed your deposits. You do not own, or have any interest in, the underlying assets. We recommend that you seek independent advice and ensure you fully understand the risks involved before trading. The information in this Market Commentary has been prepared by CMC Markets using information from external sources, believed to be accurate and reliable at the time it was sourced. It is general information only. Neither CMC Markets, its subsidiaries, nor any director, employee or agent of CMC Markets gives any guarantee, representation or warranty as to the reliability, accuracy or completeness of the information contained in the Market Commentary, nor accepts any responsibility or liability arising in any way (including by reason of negligence) for errors in, or omissions from, the information in the Market Commentary to the fullest extent permitted by law. In preparing this Market Commentary, CMC Markets did not take into account your objectives, financial situation and needs. Consequently, you should consider the information in light of your objectives, financial situation and needs. It's important for you to consider the relevant Product Disclosure Statement ('PDS') and any other relevant CMC Markets Documents before you decide whether or not to acquire any of the financial products. Our Financial Services Guide contains details of our fees and charges. All of these documents are available at cmcmarkets.com.au or you can call us on 1300 303 888.
