Stocks making the biggest moves in the premarket: Spirit Airlines, Carvana, Warby Parker and more

Take a look at some of the biggest moves.

In premarket trading, Spirit Airlines surged 19.3% after rival airline JetBlue launched a $30 per share tender offer. The merger deal between Frontier Airlines and ULCC was the reason why the previous bid by JetBlue was rejected. The shares of Frontier jumped while the shares of JetBlue fell.

Carvana shares were up 13.3% in premarket action after the used car retailer forecast significant core earnings. Carvana detailed its plans to cut costs in a SEC filing.

The eyewear retailer's stock fell in the premarket after it reported an unexpected quarterly loss as well as revenue that came in slightly below forecasts. The prior full-year outlook was maintained by Warby Parker.

The social media platform fell 2% in the premarket, amid speculation about whether Musk will complete his takeover deal. Over the weekend, Musk said that he had violated a non-disclosure agreement by revealing sample sizes used by Twitter.

The stock added 1.8% in premarket trading after the firm upgraded it to "outperform" from "neutral".

Ford Motor sold another 7 million shares of Rivian, according to an SEC filing. The sale of 8 million shares last week left Ford with a 9.7% stake. Rivian lost money before the market opened.

The firm's shares were up 4.2% in the premarket after it was upgraded to overweight.

The Carlyle Group is close to completing a $4 billion acquisition of ManTech, according to people familiar with the matter. A deal could be announced this week.

The programmatic advertising company's stock added 3.3% in premarket trading after it was upgraded to "BUY" from "HOLD". The Trade Desk will benefit from the addition of ad-supported versions of Disney+.