The companies are making news before the bell rings.

The news that Amazon struck a deal to add membership in rival food delivery service GrubHub as a free benefit for its Prime members sent the shares of DoorDash tumbling. Amazon has the option to take a stake in the food delivery company.

The right to operate peak-hour afternoon and evening flights at Newark- Liberty International Airport was awarded to Spirit Airlines. The FAA initially decided not to award the slots that Southwest Airlines was vacating when it stopped operating at Newark in 2019.

The FDA temporarily suspended its ban on e-cigarettes. Juul will be able to keep its products on the market while it appeals the FDA's ban.

A number of factors, including questions about the coin exchange operator's ability to attract talent, led to the downgrade of the company to neutral. The company fell in pre market trading.

Wells Fargo Securities upgraded the company's stock to "overweight" from "equal weight" The shares of rocket have fallen a lot.

The energy company's stock was upgraded to "BUY" from "neutral" at Goldman Sachs, which feels the company's stock is overvalued after falling more than 9% over the last month.

The paper and wood products maker agreed to be acquired by a Montreal-based paper products producer. Resolute Forest Products jumped in premarket trading.

The Israel-based developer of digital printing technologies for the apparel industry saw its stock fall in the pre market. After cutting its current-quarter guidance almost in half, Kornit said the third quarter may see a similar slowdown due to a decline in e- commerce.