Stocks making the biggest moves in the premarket: Stanley Black & Decker, Southwest Airlines, Harley-Davidson and more

cnbc.com:

Take a look at some of the biggest movers in the premarket:

Spirit Airlines (SAVE) – Spirit shares rose 3.9% in premarket trading after it agreed to be acquired by JetBlue (JBLU) for $33.50 per share in cash. That follows yesterday's rejection by shareholders of Spirit's previous deal to merge with Frontier Airlines parent Frontier Group (ULCC). Frontier shares added 1.2% while JetBlue stock was little changed.

Stanley Black & Decker (SWK) – The tool maker's stock slumped 12.3% in the premarket after quarterly results missed analysts' estimates on the top and bottom lines, and the company slashed its full-year forecast. Stanley Black & Decker said the softening of demand accelerated during the last part of the quarter, although it does expect demand to normalize.

Solar stocks – Shares of solar companies popped in the premarket after Democratic Sen. Joe Manchin agreed to support a bill that would grant a variety of clean energy incentives. Sunrun (RUN) surged 11.2%, Sunnova (NOVA) rallied 12.9%, First Solar (FSLR) jumped 9.9% and SunPower (SPWR) leaped 11.9%.

Comcast (CMCSA) – Comcast slid 5.7% in premarket trading despite beating top and bottom line estimates for the second quarter. The NBCUniversal parent saw no growth in broadband subscribers, which it attributed to strong pandemic signups pulling new business from future quarters.

Southwest Airlines (LUV) – The airline reported better-than-expected profit and revenue for the second quarter, and said demand continued to be strong. The stock sank 6.1% in the premarket, however, after it issued mixed guidance and a prediction of continued rising costs.

Harley-Davidson (HOG) – The motorcycle maker's shares jumped 5% in the premarket after it reported better-than-expected