美股熔断币圈行情美股熔断币圈最新消息

2022-04-23 08:28:59

A. 美股熔断是什么意思

美股熔断一般是指标普500指数下跌到某一阈值，当美股出现熔断情况时，意味着美国股市出现大跌的情况，投资者在熔断期间不能进行股票交易。就是当股市跌到一定幅度之后，市场自动停止交易一段时间，可能是几分钟，也可能是全天交易就此终止。在美国交易时段和非美国交易时段，甚至于部分个股，美国都有熔断机制。除了非美国交易时段的期货有针对上涨幅度的熔断外，美国交易时段只对跌幅有熔断机制。
根据标普500指数下跌幅度不同，美国熔断可以分为三个级别，一级市场熔断，是指市场下跌达到7％；二级市场熔断，是指市场下跌达到13％；三级市场熔断，是指市场下跌达到20％。以标普500指数的走势做对比：一级熔断，标普500跌度达7％会触发；二级熔断，跌幅达13％触发；三级，跌幅达20％触发。如果触发一、二级，全市场会暂停15分钟（美东时间15:25后不暂停）；如果触发三级熔断，全市场当天停止交易，下个交易日再开放。
拓展资料：当美国股市触发一级或者二级市场熔断，且时间是在美东时间9：30－15：25（含）之间，全市场所有股票暂停交易15分钟；美东时间15：25之后，不暂停交易；如果该交易日为半天交易，则时间分界点为12：25。
全天任意交易时段，如果触发三级市场熔断，全市场停止交易，直至下个交易日开盘。基于一级市场熔断、二级市场熔断的全市场交易暂停，一天只触发一次。
股市熔断，指的是股市指数，意思是当指数的下跌（或者上涨）达到一定幅度的时候，股市将会暂时停止交易一段时间，过一段时间重新开盘后，如果指数在上一次熔断点位之上，那么可以正常交易，如果继续下跌（或者涨），在没有达到下一个熔断幅度之前可以正常交易，达到下一个熔断幅度，则会再次熔断；有的熔断也可以在达到第一次熔断后直接停止交易，隔日再重新开盘。

B. 2020年打算投资数字货币该从那方面上手

一投资BTC为例，目前有三个渠道可以选：

1、直接买卖，靠行情、差价来赚取收益，风险较大，耗费时间精力也比较多。

2、成为矿工，以成本价获取比特币，然后再拿到市场上去卖，但现在矿机的成本太高了，前期投入非常多。

3、比特币的理财，收益较前两个会少一定，但胜在稳定安全，和银行的基金一个意思，目前市面上比较火的有AEX的理财超市、币安的币安宝、ok的余币宝，其中AEX的理财超市有其它平台没有的债转功能，在上面投资，你的资金周转会更加灵活。

个人偏向第三种。

C. 美股个股熔断规则是什么

1、美国的个股和熔断没有关系。因为美国的熔断主要看整个交易所的指数，所以熔断出现的情况不是很多。以纽交所为例，根据标普指数的7%、13%、20%这几个层级来确定熔断时间，第一层和第二层暂停15分钟，第三层当天就不再交易了。同时美国熔断只看股指跌的幅度，涨不会出现熔断。
2、美股熔断可以分为3级，当标普500指数下跌7%时，触发一级市场熔断，中断交易15分钟；当标普500指数下跌13%，触发二级市场熔断，中断交易15分钟；当标普500指数下跌20%，全天交易提前结束。在一级和二级市场熔断基础上，一天内不会发生2次同级别的熔断。在非美国时间，股指期货涨跌幅达到5%时，涨跌幅超过5%的期货合约都无法成交。
3、市场熔断机制这是指一个主要的股票或商品交易所暂时停止交易，因为一个指数，甚至是一只股票，在一个交易日中下跌了一定的百分比。其目的是通过重新平衡买卖指令，防止市场或股价自由下跌。例如，如果道琼斯工业平均指数下跌10%，纽约证券交易所(NYSE)可能会暂停市场交易一小时。还有其他的熔断机制导致20%和30%的下跌。除了市场范围内的熔断机制外，美国证券交易委员会Securities and Exchange Commission在2010年还试行了一项市场规则，允许熔断机制暂停某些证券的交易，这些证券的价格在五分钟内波动10%或以上。这种熔断机制暂停适用于标准普尔500指数S&P 500 Index、罗素1000指数Russell 1000 Index和数百种交易所交易产品。他们在五分钟内暂停所有美国市场适用证券的交易。

D. 美股“熔断”熔断是什么意思

就是当股市跌到一定幅度之后，市场自动停止交易一段时间，可能是几分钟，也可能是全天交易就此终止。在美国交易时段和非美国交易时段，甚至于部分个股，美国都有熔断机制。除了非美国交易时段的期货有针对上涨幅度的熔断外，美国交易时段只对跌幅有熔断机制。

一、在美国交易时段，熔断机制可以分为三级

1、一级市场熔断，是指市场下跌达到7%。

2、二级市场熔断，是指市场下跌达到13%。

3、三级市场熔断，是指市场下跌达到20%。

在这里，市场下跌，是指标普500指数在常规交易时段（美东时间9：30-16：00），指数点位相对于前一日收盘点位的下跌。如果该交易日为半天交易，则收盘时间为13：00

二、非美国交易时段熔断规定

在非美国交易时段，如果股指期货价格上涨或下跌达到5%就会触发熔断机制。

另外，如果主要期货合约是在上午8：23提供的限价买入或限价交易，而在上午8：25仍然是限价买入或限价卖出，那么交易将被暂停直到上午8：30。在暂停期间，交易所将提供指示性开仓价格限制下调至7%。

三、触发熔断后会发生的情况

1、下跌7%或13%

如果触发一级或者二级市场熔断，且时间是在：美东时间9：30-15：25（含）之间，全市场所有股票暂停交易15分钟。美东时间15：25之后，不暂停交易。另外，如果该交易日为半天交易，则时间分界点为12：25。

需要注意的是，基于一级市场熔断、二级市场熔断的全市场交易暂停，一天只触发一次。比如，下跌达到7%，触发一级市场熔断，然后价格反弹，再次下跌达到7%时，不再次熔断，除非价格下跌触发二级市场熔断。

二、下跌20%

全天任意交易时段，如果触发三级市场熔断，全市场停止交易，直至下个交易日开盘。

(4)美股熔断币圈扩展阅读

熔断机制出台背景

熔断机制最早起源于美国，美国的芝加哥商业交易所曾在1982年对标普500指数期货合约实行过日交易价格为3%的价格限制。但这一规定在1983年被废除，直到1987年出现了股灾，才使人们重新考虑实施价格限制制度。

1987年10月19日，纽约股票市场爆发了史上最大的一次崩盘事件，道琼斯工业指数一天之内重挫508.32点，跌幅达22.6%，由于没有熔断机制和涨跌幅限制，许多百万富翁一夜之间沦为贫民，这一天也被美国金融界称为“黑色星期一”。

1988年10月19日，美国商品期货交易委员会与证券交易委员会批准了纽约股票交易所和芝加哥商业交易所的熔断机制。根据美国的相关规定，当标普指数在短时间内下跌幅度达到7%时，美国所有证券市场交易均将暂停15分钟。

E. 美股熔断机制的意义是什么能具体说说吗

美股的熔断机制是指的什么呢？熔断机制又是在什么样情况下会触发呢？接下来我就给大家分享一下关于熔断机制的一些相关信息。

一.熔断机制

首先来说，说什么是熔断机制？垄断机制就是指股指大幅度下跌触发到一定幅度的时候，就会导致强制性的停止交易。一级熔断是指股指下跌7%，二级熔断是指股指下跌13%，三级熔断是指股指下跌20%。熔断机制就是用于暂停市场的交易，用于防范一些突发的风险而采用的一些手段。因为有的时候并不是市场真正的利空，而是一些虚假的消息导致了市场下跌之类的。

如果说不进行熔断，那很有可能会导致非常多的融资仓直接爆仓。所以为了防范这样的金融风险，就采用了熔断的方式，市场是否是真正的出现了利空。如果是真的有利空的话，那也是逃不掉，该跌还得跌。

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F. 美股熔断是什么历史上发生过哪几次美股熔断的现象

所谓熔断机制（Circuit Breaker），也称之为自动停盘机制，是指为了控制股票、期货或其他金融衍生产品的交易风险，为其单日价格波动幅度设置区间限制。一旦成交价触及区间上下限，交易或者自动中断一段时间（熔即断），或者继续交易但不能突破上下限（熔而不断）。国际上更多采用的是“熔即断”的交易机制。之所以将上述机制命名为熔断机制，这是因为该机制的原理与电路保险丝类似，一旦电流异常，保险丝就会自动熔断以免电器受损。

值得注意的是，美股牛市是与次贷危机后美联储实施的极其宽松的货币政策高度相关的。在这11年牛市中，美国股市仅在2015年与2018年经历过两次较为显著的调整。第一次调整发生在美联储退出量化宽松政策之后，而第二次调整发生在美联储连续多次加息之后。毋庸置疑的是，的大幅下跌，包括4次熔断，与新冠病毒肺炎疫情（COVID-19）在全球范围内的快速扩散高度相关。

G. 美国股市经历五次熔断，什么叫熔断

你好，所谓熔断机制，指的是基于参考价格的一系列价格波动限制。简单来说，就是当股市跌到一定幅度之后，市场自动停止交易一段时间，可能是几分钟，也可能是全天交易就此终止。这样做的主要目的就是，防范恐慌情绪进一步扩散，给市场带来更大的冲击。美国推出熔断机制的动因是1987年的“黑色星期一”。1987年10月19日，道指暴跌508.32点，跌幅22.6％。3个月之后，1988年2月熔断机制出台，10月首次开始实施。目前，在美国交易时段和非美国交易时段，甚至于部分个股，美国都有熔断机制。除了非美国交易时段的期货有针对上涨幅度的熔断外，美国交易时段只对跌幅有熔断机制。

H. 美股熔断机制有什么意义

1、所谓“熔断机制”(Circuit Breakers)，是指当股指跌幅达到某个设定标准时，将根据该机制自动全部中断交易若干分钟，以便使投资者得以借此了解市场情况，获得更多信息，并在冷静下来后根据市场实际情况作出理性的决策。
2、熔断机制的出现，源于1987年10月19日、史称“黑色星期一”的美国战后最大股灾：当日美股因莫名恐慌单日创出历史最大跌幅，其中道琼斯指数收跌508点，跌幅高达22%，令美国金融市场“失血”惨重，美国经济也遭遇“大地震”。“熔断机制”正是金融学家为避免重演“黑色星期一”而设置的一道“保险丝”。
3、1997年1月熔断机制首次调整，触发阈值增加100点，但同年10月27日道指就单日暴跌7.18%，从而首次，也是“黑色星期一”之前唯一一次触发“熔断”。
1998年4月15日，新的熔断机制出台，修改内容包括将熔断机制触发标准从原来的7%提高至10%，并将熔断值参照标准从前一个交易日收盘值，改为每个季度开始时纽交所所规定的平均值，其目的显然意在尽可能避免“熔断”，因此受到不少批评。
鉴于熔断机制在2008-2009年“次贷”危机中“呆若木鸡”，毫无反应，2012年5月31日，纽交所再一次，也是迄今最新一次修改熔断机制。

拓展资料
一、美国纽约证交所早盘交易开始后仅6分钟，即因暴跌触发美股第一级熔断机制，从而导致这个世界最大股票交易市场全部股票交易自动中止15分钟。这是美国股市引入熔断机制以来的第二次，也是熔断机制调整为现行规则后的第一次。
二、美股熔断是美股现行三挡，分别是7%、13%和20%。
根据现行机制，当标普500指数实时价较前一个交易日收盘价相比跌幅达到7%，即触发15分钟一切交易中止，跌幅达到13%触发又一次15分钟一切交易中止，跌幅达到20%触发当天剩余交易时间交易全部中止。如“熔断阈值”达到的时间在当天美东时间15时25分或之后，则交易不会停止。

I. 美股触发熔断机制啥叫熔断机制

美股及美股期货熔断机制

所谓熔断机制，简单来说，就是当股市跌到一定幅度之后，市场自动停止交易一段时间，可能是几分钟，也可能是全天交易就此终止。这样做的主要目的就是，防范恐慌情绪进一步扩散，给市场带来更大的冲击。

美国推出熔断机制的动因是1987年的“黑色星期一”。

1987年10月19日，道指暴跌508.32点，跌幅22.6%。3个月之后，1988年2月熔断机制出台，10月首次开始实施。

目前，在美国交易时段和非美国交易时段，甚至于部分个股，美国都有熔断机制。

除了非美国交易时段的股指期货有针对上涨幅度的熔断外，美国交易时段只对跌幅有熔断机制。

在美国交易时段，熔断机制可以分为三级。

（1）一级市场熔断，是指市场下跌达到7%

（2）二级市场熔断，是指市场下跌达到13%

（3）三级市场熔断，是指市场下跌达到20%

今日，标普500指数下跌7%，触发第一层熔断。

J. 美股熔断意味着什么

一、在美国交易时段，熔断机制可以分为三级

1、一级市场熔断，是指市场下跌达到7%。

2、二级市场熔断，是指市场下跌达到13%。

3、三级市场熔断，是指市场下跌达到20%。

二、非美国交易时段熔断规定

在非美国交易时段，如果股指期货价格上涨或下跌达到5%就会触发熔断机制。

三、触发熔断后会发生的情况

1、下跌7%或13%

二、下跌20%

全天任意交易时段，如果触发三级市场熔断，全市场停止交易，直至下个交易日开盘。

(10)美股熔断币圈扩展阅读

熔断机制出台背景

A. What does the U.S. stock market circuit breaker mean?

The U.S. stock market circuit breaker generally means that the S&P 500 index falls to a certain threshold. When a circuit breaker occurs in the U.S. stock market, it means that the U.S. stock market has fallen sharply. , investors cannot conduct stock transactions during the circuit breaker period. That is, when the stock market drops to a certain level, the market automatically stops trading for a period of time, which may be a few minutes, or it may terminate trading for the whole day. The United States has a circuit breaker mechanism during U.S. trading hours, non-U.S. trading hours, and even for some individual stocks. In addition to futures during non-U.S. trading hours having a circuit breaker for rising prices, U.S. trading hours only have a circuit breaker for falling prices.
According to the different extent of the decline of the S&P 500 Index, the US circuit breaker can be divided into three levels. The primary market circuit breaker refers to the market decline reaching 7%; the secondary market circuit breaker refers to the market decline reaching 13%; the tertiary market circuit breaker A circuit breaker refers to a market drop reaching 20%. Compare the trend of the S&P 500 Index: Level 1 circuit breaker will be triggered when the S&P 500 drops by 7%; Level 2 circuit breaker will be triggered when the S&P 500 drops by 13%; Level 3 circuit breaker will be triggered when the S&P 500 drops by 20%. If Level 1 or Level 2 is triggered, the entire market will be suspended for 15 minutes (no pause after 15:25 ET); if Level 3 circuit breaker is triggered, the entire market will stop trading that day and will reopen on the next trading day.
Extended information: When the U.S. stock market triggers a primary or secondary market circuit breaker, and the time is between 9:30 and 15:25 (inclusive) Eastern Time, all stocks in the market will be suspended for 15 minutes; Eastern Time After 15:25, trading will not be suspended; if the trading day is half-day trading, the time cut-off point is 12:25.
At any trading period throughout the day, if the third-level market circuit breaker is triggered, the entire market will stop trading until the opening of the next trading day. The market-wide trading suspension based on primary market circuit breaker and secondary market circuit breaker is only triggered once a day.
The stock market circuit breaker refers to the stock market index, which means that when the decline (or rise) of the index reaches a certain level, the stock market will temporarily stop trading for a period of time. After a period of time, it will reopen. If the index was circuit breaker last time If it is above the level, you can trade normally. If it continues to fall (or rise), you can trade normally before reaching the next circuit breaker range. When the next circuit breaker range is reached, it will be circuit breaker again; some circuit breaker can also be triggered after reaching the first circuit breaker range. Trading was immediately stopped after the first circuit breaker and reopened the next day.

B. Where should I start investing in digital currencies in 2020

Take investing in BTC as an example. There are currently three channels to choose from:

1. Direct trading, relying on market prices and price differences to earn income, is risky and takes a lot of time and energy.

2. Become a miner, obtain Bitcoin at cost price, and then sell it on the market. However, the cost of mining machines is too high now, and the initial investment is very high.

3. The income from Bitcoin financial management will be lower than the previous two, but it is more stable and safe.Bank funds mean one thing. Currently, the popular ones on the market include AEX’s financial supermarket, Binance’s Binance Bao, and OK’s Yubibao. Among them, AEX’s financial supermarket has a debt swap function that other platforms do not have. If you invest on it, you can The capital turnover will be more flexible.

Personally, I prefer the third option.

C. What are the circuit breaker rules for U.S. stocks?

1. U.S. individual stocks have nothing to do with circuit breaker. Because the circuit breaker in the United States mainly depends on the index of the entire exchange, there are not many cases of circuit breaker. Taking the New York Stock Exchange as an example, the circuit breaker time is determined based on the 7%, 13%, and 20% levels of the S&P Index. The first and second levels are suspended for 15 minutes, and the third level will no longer trade that day. At the same time, the circuit breaker in the United States only depends on the extent of the stock index's decline, and there will be no circuit breaker when it rises.
2. U.S. stock market circuit breakers can be divided into three levels. When the S&P 500 index falls by 7%, the primary market circuit breaker is triggered and trading is interrupted for 15 minutes; when the S&P 500 index falls by 13%, the secondary market circuit breaker is triggered and the trading is interrupted. Trading lasts 15 minutes; when the S&P 500 drops 20%, trading ends early for the day. Based on the circuit breaker in the primary and secondary markets, circuit breaker of the same level will not occur twice in a day. During non-U.S. time, when the stock index futures increase or decrease reaches 5%, futures contracts with an increase or decrease of more than 5% cannot be traded.
3. Market circuit breaker mechanism This refers to a major stock or commodity exchange temporarily halting trading because an index, or even a stock, fell by a certain percentage in a trading day. Its purpose is to prevent the market or stock price from free falling by rebalancing buy and sell orders. For example, if the Dow Jones Industrial Average drops 10%, the New York Stock Exchange (NYSE) may suspend market trading for an hour. There are other circuit breakers that lead to 20% and 30% declines. In addition to market-wide circuit breakers, the Securities and Exchange Commission piloted a market rule in 2010 that allowed circuit breakers to suspend trading in certain securities whose prices fluctuated by 10% or more within five minutes. above. The circuit breaker pause applies to the S&P 500 Index, Russell 1000 Index and hundreds of exchange-traded products. They suspended trading in all applicable securities on the U.S. market for five minutes.

D. What does "circuit breaker" mean in the U.S. stock market?

It means that when the stock market falls to a certain level, the market automatically stops trading for a period of time, which may be a few minutes or the entire day. The transaction is terminated. The United States has a circuit breaker mechanism during U.S. trading hours, non-U.S. trading hours, and even for some individual stocks. In addition to futures during non-U.S. trading hours having a circuit breaker for rising prices, U.S. trading hours only have a circuit breaker for falling prices.

1. During U.S. trading hours, the circuit breaker mechanism can be divided into three levels

1. Primary market circuit breaker, which isIt means the market fell by 7%.

2. The secondary market circuit breaker refers to the market falling by 13%.

3. Tertiary market circuit breaker refers to the market falling by 20%.

Here, the market decline refers to the index point of the S&P 500 index during the regular trading period (9:30-16:00 ET) relative to the previous day's closing point. fell. If the trading day is a half-day trading, the closing time is 13:00

2. Circuit breakers during non-U.S. trading hours

During non-U.S. trading hours, if stock index futures If the price rises or falls by 5%, the circuit breaker mechanism will be triggered.

Also, if the primary futures contract is offering a buy limit or a limit trade at 8:23 a.m. and is still a buy limit or sell limit at 8:25 a.m. out, trading will be suspended until 8:30 am. During the suspension, the exchange will lower the indicative opening price limit to 7%.

3. What will happen after the circuit breaker is triggered

1. A drop of 7% or 13%

If the primary or secondary market is triggered Circuit breaker, and the time is between 9:30 and 15:25 (inclusive) Eastern Time, all stocks in the market will be suspended for 15 minutes. Trading will not be suspended after 15:25 Eastern Time. In addition, if the trading day is a half-day trading, the time cut-off point is 12:25.

It should be noted that the market-wide trading suspension based on primary market circuit breaker and secondary market circuit breaker is only triggered once a day. For example, if the price falls by 7%, the primary market circuit breaker is triggered, and then the price rebounds. When the price falls again by 7%, the circuit breaker will not be triggered again, unless the price drop triggers the secondary market circuit breaker.

2. Drop of 20%

If the third-level market circuit breaker is triggered during any trading period throughout the day, the entire market will stop trading until the opening of the next trading day.

(4) Extended reading on the U.S. stock circuit breaker currency circle

Background of the introduction of the circuit breaker mechanism

The circuit breaker mechanism first originated in In the United States, the Chicago Mercantile Exchange in the United States implemented a price limit of 3% on the S&P 500 Index futures contract in 1982. However, this regulation was abolished in 1983. It was not until the stock market crash in 1987 that people reconsidered the implementation of the price limit system.

On October 19, 1987, the largest crash in history occurred in the New York stock market. The Dow Jones Industrial Index plummeted 508.32 points in one day, a drop of 22.6%. Due to restrictions, many millionaires became poor overnight. This day was also called "Black Monday" by the American financial community.

On October 19, 1988, the U.S. Commodity Futures Trading Commission and the Securities and Exchange Commission approved the New York Stock Exchangeand circuit breakers at the Chicago Mercantile Exchange. According to relevant regulations in the United States, when the S&P index falls by 7% in a short period of time, all securities market transactions in the United States will be suspended for 15 minutes.

E. Can you elaborate on what the circuit breaker mechanism of the US stock market means?

What does the circuit breaker mechanism of the US stock market mean? Under what circumstances will the circuit breaker mechanism be triggered? Next, I will share with you some relevant information about the circuit breaker mechanism.

1. Circuit Breaker Mechanism

First of all, what is the circuit breaker mechanism? The monopoly mechanism means that when the stock index falls sharply to a certain extent, it will lead to a mandatory stop of trading. The first-level circuit breaker means that the stock index falls by 7%, the second-level circuit breaker means that the stock index falls by 13%, and the third-level circuit breaker means that the stock index falls by 20%. The circuit breaker mechanism is a means used to suspend market transactions and prevent some sudden risks. Because sometimes it is not the market that is really bad, but some false news that causes the market to fall.

If circuit breakers are not implemented, it is very likely that a lot of financing positions will be liquidated directly. Therefore, in order to prevent such financial risks, a circuit breaker is adopted to determine whether the market is truly negative. If it is really bad, there is no way to escape it. It will fall when it should.

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F. What is the U.S. stock market circuit breaker? How many U.S. stock market circuit breakers have occurred in history?

The so-called circuit breaker (Circuit Breaker), also known as the automatic suspension mechanism, refers to In order to control the trading risks of stocks, futures or other financial derivatives, set range limits for their single-day price fluctuations. Once the transaction price touches the upper and lower limits of the range, the transaction will either be automatically interrupted for a period of time (melt and break), or the transaction will continue but cannot break through the upper and lower limits (melt and continue). The "melt-and-break" trading mechanism is more commonly used internationally. The reason why the above mechanism is named the fuse mechanism is because the principle of this mechanism is similar to that of a circuit fuse. Once the current is abnormal, the fuse will automatically blow to avoid damage to the electrical appliance.

It is worth noting that the bull market in U.S. stocks is highly related to the extremely loose monetary policy implemented by the Federal Reserve after the subprime mortgage crisis. In this 11-year bull market, the U.S. stock market has only experienced two significant adjustments in 2015 and 2018. The first adjustment occurred after the Fed exited its quantitative easing policy, while the second adjustment occurred after the Fed raised interest rates several times in a row. There is no doubt that the sharp decline, including four circuit breakers, is highly related to the rapid spread of the new coronavirus pneumonia epidemic (COVID-19) around the world.

G. The U.S. stock market has experienced five circuit breakers. What is a circuit breaker?

Hello, the so-called circuit breaker mechanism refers to a series of price fluctuation limits based on reference prices. To put it simply, when the stock market falls to a certain level, the market will naturallyTrading is automatically stopped for a period of time, which may be a few minutes, or trading may be terminated for the entire day. The main purpose of this is to prevent panic from spreading further and causing a greater impact on the market. The motivation for the United States to launch the circuit breaker mechanism was the "Black Monday" in 1987. On October 19, 1987, the Dow Jones Industrial Average plummeted 508.32 points, or 22.6%. Three months later, the circuit breaker mechanism was introduced in February 1988 and implemented for the first time in October. Currently, the United States has a circuit breaker mechanism during U.S. trading hours, non-U.S. trading hours, and even for some individual stocks. In addition to futures during non-U.S. trading hours having a circuit breaker for rising prices, U.S. trading hours only have a circuit breaker for falling prices.

H. What is the significance of the US stock circuit breaker mechanism?

1. The so-called "Circuit Breakers" means that when the stock index decline reaches a certain set standard, the system will Automatically interrupt all transactions for a few minutes so that investors can understand the market situation, obtain more information, and make rational decisions based on the actual market conditions after calming down.
2. The emergence of the circuit breaker mechanism originated from the largest post-war stock market disaster in the United States on October 19, 1987, known as "Black Monday" in history: On that day, the U.S. stock market suffered its largest single-day decline in history due to inexplicable panic, with the Dow Jones Index closing at It fell 508 points, a drop of as much as 22%, causing heavy blood loss to the U.S. financial market and a "major earthquake" to the U.S. economy. The "circuit breaker" is a "fuse" set up by financial scientists to avoid a repeat of "Black Monday".
3. The circuit breaker mechanism was adjusted for the first time in January 1997, with the trigger threshold increased by 100 points. However, on October 27 of the same year, the Dow Jones Industrial Average plummeted 7.18% in a single day, thus triggering the circuit breaker for the first and only time before "Black Monday" ".
On April 15, 1998, a new circuit breaker mechanism was introduced. The modifications included increasing the triggering standard of the circuit breaker mechanism from the original 7% to 10%, and changing the circuit breaker reference standard from the closing value of the previous trading day to every The average value set by the New York Stock Exchange at the beginning of each quarter is obviously intended to avoid "circuit breaker" as much as possible, so it has been criticized a lot.
In view of the fact that the circuit breaker mechanism was "dumb" and unresponsive during the 2008-2009 "subprime mortgage" crisis, on May 31, 2012, the New York Stock Exchange once again modified the circuit breaker mechanism for the latest time so far.

Extended information
1. Only 6 minutes after the start of morning trading on the New York Stock Exchange in the United States, the first-level circuit breaker mechanism of the U.S. stock market was triggered due to the plunge, resulting in the automatic suspension of all stock trading in the world's largest stock trading market. 15 minutes. This is the second time since the circuit breaker mechanism was introduced in the U.S. stock market, and the first time since the circuit breaker mechanism was adjusted to the current rules.
2. The U.S. stock market circuit breakers are the current three levels of U.S. stocks, which are 7%, 13% and 20%.
According to the current mechanism, when the real-time price of the S&P 500 Index drops by 7% compared with the closing price of the previous trading day, a 15-minute suspension of all transactions will be triggered.Stop, a drop of 13% triggers the suspension of all trading for another 15 minutes, and a drop of 20% triggers the suspension of all trading for the rest of the day. If the "circuit breaker threshold" is reached at or after 15:25 ET on the same day, trading will not stop.

I. What is the circuit breaker mechanism when the U.S. stock market triggers the circuit breaker mechanism?

The circuit breaker mechanism for U.S. stocks and U.S. stock futures

The so-called circuit breaker mechanism, simply put, is when the stock market falls. After reaching a certain range, the market automatically stops trading for a period of time, which may be a few minutes, or it may terminate trading for the whole day. The main purpose of this is to prevent panic from spreading further and causing a greater impact on the market.

The motivation for the United States to launch the circuit breaker mechanism was the “Black Monday” in 1987.

On October 19, 1987, the Dow Jones Industrial Average plummeted 508.32 points, a drop of 22.6%. Three months later, the circuit breaker mechanism was introduced in February 1988 and implemented for the first time in October.

Currently, the United States has a circuit breaker mechanism during U.S. trading hours, non-U.S. trading hours, and even for some individual stocks.

In addition to stock index futures during non-U.S. trading hours that have a circuit breaker for rising prices, U.S. trading hours only have a circuit breaker mechanism for falling prices.

During US trading hours, the circuit breaker mechanism can be divided into three levels.

(1) The primary market circuit breaker refers to the market falling by 7%

(2) The secondary market circuit breaker refers to the market falling by 13%

(3) The third-level market circuit breaker refers to the market falling by 20%

Today, the S&P 500 index fell by 7%, triggering the first-level circuit breaker.

J. What does the U.S. stock market circuit breaker mean?

It means that when the stock market falls to a certain level, the market automatically stops trading for a period of time, which may be a few minutes, or it may terminate trading for the whole day. . The United States has a circuit breaker mechanism during U.S. trading hours, non-U.S. trading hours, and even for some individual stocks. In addition to futures during non-U.S. trading hours having a circuit breaker for rising prices, U.S. trading hours only have a circuit breaker for falling prices.

1. During US trading hours, the circuit breaker mechanism can be divided into three levels

1. Primary market circuit breaker refers to a market drop of 7%.

2. The secondary market circuit breaker refers to the market falling by 13%.

3. Tertiary market circuit breaker refers to the market falling by 20%.

II. Non-U.S. trading session circuit breaker regulations

During non-U.S. trading hours, if the price of stock index futures rises or falls by 5%, the circuit breaker mechanism will be triggered.

3. What will happen after the circuit breaker is triggered

1. A drop of 7% or 13%

2. Drop of 20%

If the third-level market circuit breaker is triggered during any trading period throughout the day, the entire market will stop trading until the opening of the next trading day.

(10) Extended reading on the U.S. stock circuit breaker currency circle

Background of the introduction of the circuit breaker mechanism

On October 19, 1988, the U.S. Commodity Futures Trading Commission and the Securities and Exchange Commission approved the circuit breakers for the New York Stock Exchange and the Chicago Mercantile Exchange. According to relevant regulations in the United States, when the S&P index falls by 7% in a short period of time, all securities market transactions in the United States will be suspended for 15 minutes.

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