市场熔断机制：
<ul>
<li>一级市场熔断： 市场下跌达到7%，暂停交易15分钟（9:30-15:25之间），否则不暂停。</li>
<li>二级市场熔断： 市场下跌达到13%，暂停交易15分钟（9:30-15:25之间），否则不暂停。</li>
<li>三级市场熔断： 市场下跌达到20%，全天停止交易，直至下个交易日开盘。</li>
</ul>
个股暂停交易机制：
<ul>
<li>涨跌幅暂停： 如果个股涨跌幅触及限制，美东时间9:45-15:35（含）期间，暂停交易5分钟；15:35之后不暂停交易。但是如果该交易日为半天交易，则时间分界点调整为12:35。</li>
</ul>
通过了解以上信息，您可以更好地参与美股市场，合理规划交易策略并控制风险。

Market circuit breaker mechanism:
<ul>
<li>Primary market circuit breaker: If the market falls by 7%, trading will be suspended for 15 minutes (between 9:30-15:25), otherwise it will not be suspended.</li>
<li>Secondary market circuit breaker: If the market falls by 13%, trading will be suspended for 15 minutes (between 9:30-15:25), otherwise it will not be suspended.</li>
<li>Third level market circuit breaker: The market falls by 20%, and trading is stopped throughout the day until the opening of the next trading day.</li>
</ul>
Suspension trading mechanism for individual stocks:
<ul>
<li>Suspension of price fluctuation: If the price fluctuation of a stock touches the limit, trading will be suspended for 5 minutes during the period of 9:45-15:35 Eastern Time (inclusive); trading will not be suspended after 15:35. However, if the trading day is half a day, the time cutoff point will be adjusted to 12:35.</li>
</ul>
By understanding the above information, you can better participate in the US stock market, plan trading strategies reasonably, and control risks.

美股熔断机制有哪些？

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