The index, which underperformed the Dow Jones and the Nasdaq, gave back the 11 percent gain it made in June.
Financial analysts seemed convinced of the long-term advantages of the deal but noted that investors may remain skeptical in the near term.
The company's total revenues were $114.1 million compared with $95.6 million in the same quarter last year, beating analysts' expectations.
Exact said it will pay $72 per share for Genomic Health for a total transaction price of $2.8 billion in cash and stock.
Authors concluded that all three assays — Oncotype DX, EndoPredict, and Prosigna — met Canadian thresholds for cost-effectiveness and urged caution in considering the findings.
Under the determination, which will become final following publication in Germany's Federal Gazette, Oncotype DX becomes the only multigene test nationally reimbursed in Germany for its target population early-stage breast cancer patients.
The investment bank cited management confidence in US and European test growth as meriting the upgrade, which was necessary to maintain a current $72 price target on the firm's stock.
Meeting presentations supported tweaking the clinical interpretation of Genomic Health's Oncotype DX and bolstered Biotheranostics' Breast Cancer Index.
Individual stocks in the GenomeWeb Index were mostly down in May, with 21 of the 30 stocks posting losses and nine stocks recording gains.
The randomized data continue to distinguish Genomic Health's test for node-negative women, while new questions come to the fore node-positive disease and other areas of clinical care.
Holden Thorp is to be the new editor-in-chief of Science and its related journals.
A genetic analysis of salmon scales collected over the course of a century points to a sharp decline in the number of fish returning each year to river in British Columbia, CBC reports.
Adelaide University has suspended the head of an ancient DNA lab as its investigation of workplace bullying continues, Australia's ABC News reports.
In PNAS this week: gene expression profiles of adipocyte subtypes, computational approach for improving plant expressome analysis, and more.