Solid state: Micron Technology shares continued a sharp rise that began after the maker of DRAM and flash memory chips reporting better-than-expected earnings a week earlier. Its shares jumped 10 percent on Monday and by Thursday were up 20 percent for the week. They fell on Friday and finished the week 14 percent higher.
Turbulence: Shares in the biggest U.S. airlines hit rough air Tuesday. American Airlines and United Airlines fell about 5 percent that day because of pilot incidents that resulted in diverted flights. Delta shares fell 4 percent that day on oil price worries. At week's end, all three followed the broader market higher. American closed up 9.8 percent for the week, United up 7.6 percent and Delta up 5.2 percent.
Health care hiccup: Shares in UnitedHealth Group, Minnesota's biggest company by revenue, dropped 3 percent Tuesday amid a broad tumble in the health care sector. Investors have been watching for the long rally in health shares to peak. Statements on drug prices by presidential candidates became a reason to sell. UnitedHealth finished the week up a half percent.
Money stream: A decision to raise the monthly fee for video streaming lifted the share price of Netflix by 6 percent Thursday. It finished the week up 6.8 percent.
Pay dirt: Glencore, the Swiss mining giant that is the money behind the PolyMet copper mining project in northern Minnesota, recovered this week from losing one-third of its market value the previous week — and more. An announcement that it would halt zinc mining sent its shares up 7 percent on Friday, ending a 36 percent rise for the week. Its shares are back where they were three weeks ago before their volatile drop.
Shuffle done: Wal-Mart Stores, which got a new CEO earlier this year, named a new financial chief and top merchandiser on Friday. Its shares fell 0.2 percent that day but were up 2.6 percent for the week.