Stocks making the biggest moves premarket:

$Spirit Airlines(SAVE.US)$
— The airline stock jumped 3% in premarket after the company posted stronger-than-expected fourth-quarter earnings. Spirit Airlines reported earnings of 12 cents per share excluding items, 9 cents higher than the analysts’ estimate, according to FactSet.
$Skyworks Solutions(SWKS.US)$
— Shares added more than 2% after Skyworks Solutions announced a $2 billion share buyback program. The announcement helped investors overlook an slight earnings miss in the semiconductor firm’s most recent quarter.
$Activision Blizzard(ATVI.US)$
— Shares rose 2% after Activision Blizzard topped revenue expectations in its most recent quarter. The firm reported $3.57 billion in revenue, greater than consensus expectations for $3.16 billion in revenue, according to Refinitiv.
$Pinterest(PINS.US)$
— Pinterest shares dipped more than 1% after the image sharing company posted mixed earnings results. The firm reported earnings of 29 cents per share, greater than forecasts for 27 cents per share, according to consensus expectations from Refinitiv. However, revenue came in at $877 million, lower than the $886 million estimate.
$DuPont(DD.US)$
— Shares declined 2% after DuPont de Nemours posted earnings results from its most recent quarter. The firm beat expectations on the top and bottom lines, but its earnings and revenue guidance for the first quarter was much lower than estimates.
$Leggett & Platt(LEG.US)$
— Shares fell more than 1% after Leggett & Platt reported disappointing earnings results, according to consensus expectations on FactSet.