Tetra Tech (TTEK) could be a solid choice for investors given its recent upgrade to a Zacks Rank #2 (Buy). This upgrade primarily reflects an upward trend in earnings estimates, which is one of the most powerful forces impacting stock prices.The sole determinant of the Zacks rating is a company's changing earnings picture. The Zacks Consensus Estimate -- the consensus of EPS estimates from the sell-side analysts covering the stock -- for the current and following years is tracked by the system.Individual in ...

Agco (AGCO) came out with quarterly earnings of $0.41 per share, beating the Zacks Consensus Estimate of $0.03 per share. This compares to earnings of $2.32 per share a year ago. These figures are adjusted for non-recurring items.This quarterly report represents an earnings surprise of 1,266.67%. A quarter ago, it was expected that this farm equipment maker would post earnings of $1.80 per share when it actually produced earnings of $1.97, delivering a surprise of 9.44%.Over the last four quarters, the comp ...