WILMINGTON,Three analysts upgraded their ratings of PPD stock today, helping spark a buying spree on Wall Street.

After PPD reported Wednesday strong earnings for the second quarter, the three analyst firms all raised its stock (Nasdaq: PPDI) to “outperform”. The three firms are Robert W. Baird, Friedman Billings and Raymond James.

In noontime trading, PPDI surged more than $10 a share, or 20 percent, to $58.63.

By the time markets closed, PPDI hit $58.82, an increase of 21 percent.

After hours, trading sent the stock another 7 cents higher to $58.89.

For details on the earnings report, see: www.localtechwire.com/article.cfm?u=11793