Wall Street mixed in dull start to the week

• Crude oil prices rallied as the US administration announced the end of waivers on Iranian oil.
• US indexes held within familiar ranges as investors wait for earnings reports.

US indexes opened with a soft tone but closed the day mixed with the DJIA trimming half of its intraday losses and settling at 26,512, down by 47 points. The Nasdaq Composite gained 0.22% and settled at 8,015, while the S&P added 3 points to finish the day at 2,907. Boeing led the Dow lower by shedding 1.29%, following headlines indicating that the company ignored workers’ concerns over its production quality of 787 jets.

Firmer crude oil prices underpinned the S&P and the Nasdaq, after the Trump's administration announced that they wouldn't renew Iran oil waivers, intending to bring Iran's oil exports to zero, denying the regime its principal source of revenue, spurring concerns about a supply shortage.

Market players are eyeing big names' earnings report later this week.