Some firms say they short such stock, particularly new issues, as a way of supporting prices.
The stock issue of $500,000 was divided equally between the two companies.
The number of new stock issues from developing countries has also dropped sharply.
Analysts said that the new stock issue should raise about $300 million.
The original stock issue was 10,700 shares, selling for between $4 and $5 a share.
As a result, several stock issues were announced to big investors.
The performance may lead to the delay of stock issues by other companies with close ties to the Chinese government.
In the case of a new stock issue, this sale is a public offering.
In fact, there have been few stock issues brought to market this year.
The market for new stock issues has cooled in the last month.