General Electric reported quarterly earnings that beat analysts' expectations by a penny a share on Friday.
DuPont's performance coating business added almost $2 billion to earnings in the year-earlier quarter.
"It looks like it's an operating beat, but they got there probably like no one thought they would," Raymond James analyst Anthony Polini told CNBC.
Yahoo shares, which are down roughly 15 percent since the start of the year, rose about as much as 8 percent in after-hours trading.
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