Lumber jacked: Builders FirstSource, a maker of building materials, jumped 10.1 percent to $14.25 Wednesday, getting a boost from rising lumber prices. The stock closed the week at $15.15.
Bad medicine: Perrigo slumped 11.2 percent to $75.14 Tuesday after it said it has agreed to sell its royalty rights to a multiple sclerosis drug, a move the company said will allow it to pay off debt but hurt its earnings. Perrigo closed the week at $72.76.
Drug down: Valeant Pharmaceuticals fell 9 percent to $15.15 Tuesday after the Canadian drug firm posted earnings that included a 13 percent decline in year-over-year revenue. The company has struggled to regain investor confidence after it came under investigation over its accounting and pricing practices last year. Shares closed Friday at $13.06, off 20 percent for the week.
Strategic change: Target Corp. executives said Tuesday they would lower prices to regain market share, forcing a resetting of price and profit goals for this year and next. Target shares fell 13 percent that day and seesawed the rest of the week. The stock finished the week down 13.8 percent at $57.35.
Looking up: Expectations that the Trump administration will ramp up infrastructure spending projects helped lift Martin Marietta Materials 2.8 percent to $215.99 Monday. Martin Marietta shares finished the week at $217.45.
Build it: Lowe's climbed 8.5 percent to $80.73 Wednesday after stronger than expected quarterly earnings and an upbeat forecast for the rest of 2017. The retailer's shares finished the week at $81.68.