What took place at the opening
Held at the opening when the guard is not allowed to trade on the stock exchange opening for the day.
Penetration took place at the opening
Is subject to discovery in the action when you stop on the trading of shares is called to open the trading day. Stock exchanges can halt trading on securities at any time, but trading usually resumes in about an hour. Such halts are used for the protection of investors. There are three main reasons why the action took place on the discovery: new information is expected to be issued by the company, which can have a significant impact on the share price; there is an imbalance in buy and sell in the market, stocks do not meet the regulatory requirements of listing. Latency trading suspension of the trades that occur at the beginning of the trading day. Traders can find the trading halt and delay information on the website of the exchange.
At the stop of the trade in General is a suspension of trading in securities on one or more exchanges, usually in anticipation of a news announcement or to correct imbalance of the order. Trading halt can also be used for regulatory purposes. If trading halt, open orders may be canceled and options may be exercised.
The suspension of trading
Securities and exchange Commission (sec) identifies two types of trading halts and delays, which can affect investors: regulatory and non-regulatory. While the SEC can’t stop the bidding, he may suspend trading for up to 10 days and, if necessary, to revoke the registration of securities. Regulatory halts occur when a company has pending news that may affect the price of securities. Halting or delaying trading, everyone has time to assess the impact of this news. These halts may occur in cases where security is unable to continue to meet the listing standards of the exchange. Regulatory halts occur due to the significant imbalance in the pending buy and sell the security. The exchange of experts, as a rule, react to the dissemination of information to investors regarding the price range where trades can start again on the exchange. In particular, the offensive halts are not common to all exchanges, so that the security may continue to trade.
Switches exchange scheme
Stock exchange can take action to alleviate the panic, referring to rule 48 and the cessation of trade. According to the rules of 2012, market-wide circuit breakers blow when the S&P 500 drops 7% at level 1; 13% for level 2; and 20% for level 3 from the closing price of the previous day. The market decline that triggers a level 1 or level 2 circuit breaker before 3:25 p.m. Eastern time to halt trading for 15 minutes, but will not lead to the cessation of trading on or after 3:25 PM