The debut of the social Internet service Pinterest in the stock market on Thursday last week showed investor interest in its shares, which, following the results of the IPO, rose by almost 30%. Thus, the cost of Pinterest was estimated at approximately $16 billion. This IPO, as well as the planned initial public offering of Uber, reinforces interest in the US IPO market. Pinterest Chief Financial Officer Todd Morgenfeld stated that the company was working to create a better version of Pinterest in the next few years. During trading on Friday, its shares were traded at $23.75 per share, which is higher than their value of $19 during the IPO. At the close of trading, their price rose to 24 dollars 40 cents per share.