This week, two star enterprises created online game platforms.$Roblox Corporation (RBLX.US) $And the so-called Amazon.Com Inc of South Korea.$Coupang (CPNG.US) $Landing in US stocks one after another, it was very popular.

However, Roblox does not start trading until after 13:30 EDT, while Coupang starts trading earlier, at 12:27Many cattle friends who want to invest in these new stocks are wondering when they will start trading in the US stock market.

For this question, the editor can not give a specific answer.Unlike Hong Kong stocks, new shares of US stocks cannot be traded directly after they open at 9:30 EDT, and they usually have to wait for an hour or more, and the time to start trading may be at any time of the day, so they need to pay attention to them.

This stems from an ancient "price discovery" (Price Discovery) mechanism of the NYSE's IPO process, in which designated market makers (DMM) gather large buyers and sellers together before public trading to conduct public auctions of shares on the day of IPO.I believe many cattle friends have seen this scene in Wall Street movies.

The purpose of price discovery is to use the supply and demand mechanism to stabilize the price at a more reasonable price, so that the stock price can be maintained at a relatively stable level after the start of public trading.

NASDAQ Exchange, another major exchange, as the first electronic exchange in the world, does not adopt this artificial mechanism, but uses the "IPO CROSS" electronic program specially priced for IPO.On the morning of IPO trading on NASDAQ, traders can submit buy and sell orders. Nasdaq matches these orders and determines the opening price in real time on its electronic market, a process that can usually be completed in a very short time.

Then why are hot stocks still trading so late? This is not a delay or glitch, but a matter of artificial preference or style, that is, IPO can negotiate a special opening time with the NASDAQ.

Of course, the electronic mechanism is not necessarily better than the artificial mechanism of the New York Stock Exchange.$Facebook Inc (FB.US) $At the time of listing, some hedge funds came out to complain that Nasdaq's technical glitch led to Facebook Inc's poor performance in IPO, and Nasdaq servers were overwhelmed by investors' unprecedented enthusiasm for star companies like Facebook Inc, exacerbating technical problems. therefore$Twitter (TWTR.US) $Chose the New York Stock Exchange conservatively in IPO.

Of course, although the opening mechanisms of the two exchanges are different, the aim is to pursue relatively stable prices after the start of trading.To be sure, the opening times of new shares on both exchanges are uncertain, especially hot ones, which are also common in the afternoon in the US East.

Niu you, who want to buy and sell new US stocks, can only wait patiently for those who like to buy and sell new stocks. Niu friends, if you have any experience about trading new shares, you are welcome to share it with us in the comments area.