Uncertainty clouds the US stock IPO market as smart ring manufacturer Oura (OURA.US) joins the list of postponed listings.

According to Golden Ten Data APP, smart ring manufacturer Oura (OURA.US) has become the latest company to delay its initial public offering (IPO) in the United States due to market uncertainty. The wearable technology startup and its shareholders had originally planned to raise up to $2.2 billion in a Nasdaq IPO. Previously, it was reported that its IPO was about four times oversubscribed.