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the paper reporter ding xinqing

on september 27, the shanghai stock market, which continued to rise, encountered unexpected trading abnormalities. the inability to cancel orders and the failure of transactions made investors who wanted to participate in the market feel on pins and needles.

in response, the shanghai stock exchange issued two announcements that day, one at 11:00 a.m. saying that "relevant reasons are being investigated" and an apology announcement in the evening.

"after the opening of the market today, the stock bidding transaction of the exchange experienced an abnormal situation of slow transaction confirmation, which caused the transaction to be affected. after handling, the stock bidding transaction gradually resumed at 11:13. regarding the occurrence of this abnormal situation, the exchange deeply expresses its sincerity apologize," the shanghai stock exchange said in an evening announcement.

subsequently, some investors reported that orders were still being traded after the market closed on september 27 or even late at night. in this regard, some insiders pointed out that stock orders are basically executed immediately during the day, but the feedback to investors' accounts is delayed. different brokerage systems have different response speeds, which is also the reason why investors receive confirmation information in different order. under normal circumstances, after an investor places an order, the trading system will quickly confirm the transaction and provide immediate feedback. however, on september 27, there was a delay in confirming the transaction of some stocks on the shanghai stock exchange.

faced with the investment impact caused by the exchange "downtime" incident, how should investors respond?

some economists pointed out that the shanghai stock exchange's announcement stated that "the exchange's stock bidding transactions have experienced abnormal slowdowns in transaction confirmation." investors need to understand the difference between "slow trading" and "unable to trade." pan helin, an economist and member of the information and communication economy expert committee of the ministry of industry and information technology, said that "slow trading" and "unable to trade" are two different concepts. if the transaction is just slow, which is a normal technical failure caused by excessive traffic, then investors have no problem. it is necessary to safeguard rights, because this itself is force majeure.