On opening day Salesforce.com's stock was up $6.20 to $17.20, a 56.4% increase over the initial offering price of $11.
Salesforce.com's stock remained above $17 on opening day.
Since stocks typically fluctuate throughout the day, there is no way of knowing from this text whether it dipped below $17 or not; system recognized the number, but didn't have background knowledge of how stocks work.