Liked: Facebook shares jumped 5 percent, to $109.03 Thursday after the social network reported an 11 percent gain in quarterly profits, helped by higher advertising revenue and a 17 percent increase in daily users from a year ago. Shares closed the week at $107.10.
Under pressure: Whole Foods Market fell 5 percent, to $29.18 Thursday after reporting its latest quarterly profit fell by more than half as it faces more intense competition now because organic foods are becoming more widely available. The results missed analysts' estimates. Shares closed the week at $31.11.
Bad harvest: Archer Daniels Midland fell 9 percent Tuesday, to $42.17. The ethanol and agricultural products maker posted third quarter earnings that badly missed analysts' expectations. The stock closed the week at $42.13.
Outbreak: Chipotle Mexican Grill shares declined 5 percent to $610.98 Monday as an E. coli outbreak linked to restaurants in Oregon and Washington state spread. The Mexican restaurant chain has shut down all 43 of its restaurants in those states. Chipotle shares closed the week at $612.40.
Pull out the plastic: Payments processor Visa dipped 4 percent, to $74.81 Monday after it said it will buy sister company Visa Europe in a deal that could be worth more than $23 billion. Visa shares closed the week at $78.75.
Shire expands: Irish drugmaker Shire will buy Dyax for at least $5.9 billion, or $37.30 per share. Dyax is studying treatments for a rare genetic disease that can cause dangerous swelling of the throat or larynx. Dyax shares rose 32 percent, to $36.27 when the deal was announced Monday. The stock closed Friday at $34.52.