Dow, S&P 500 and Nasdaq set for opening gains after Friday's 770-point blue-chip fall; Oil extends gain as gold slips. Follow along to the action on Monday aft

The Dow Jones Industrial Average (DJINDICES: ^DJI) index edged 3.9% higher in May, with 70% of its 30 constituent stocks ending the month in positive territory. However, the two worst-performing Dow stocks in May -- both from the healthcare sector -- kept the index's rally in check, with one of them plunging over 25%.

Markets rebounded after Trump said his administration intends to send letters to US trade partners to formally establish new tariff terms.

Shares of Sherwin-Williams Co. and Visa are trading lower Friday afternoon, propelling the Dow Jones Industrial Average selloff. The Dow was most recently trading 822 points, or 1.9%, lower, as shares of Sherwin-Williams Co.

The S&P 500 and the Nasdaq composite index lost more than 1 percent. The Dow Jones Industrial Average fell 1.8 percent, dragged down by three of its 30 stocks.

The major averages posted modest gains on Thursday, placing them on track for a winning week. Softer-than-anticipated inflation reports helped lift stocks.

The blue-chip Dow Jones Industrial Average was headed for its worst daily drop in almost a month on Friday as the Israel-Iran conflict rattles investors, after easing back from session lows. The Dow was down about 774 points,

A Canadian court has ordered Nova Chemicals to pay Dow an additional amount of C$1.62 billion ($1.2 billion) in damages incurred from the companies' jointly owned ethylene asset in Joffre, Alberta, Dow said on Wednesday.