Shares of technology companies fell slightly on a second straight volatile session for the sector, amid valuation concerns.

Shares of some of the bull-market leaders, including Facebook, Apple, Amazon.com, Microsoft, Google parent Alphabet and Tesla, fell significantly before rebounding late in the session.

Delta Air Lines signed a multiyear contract with International Business Machines to help the carrier move most of its data and applications to the cloud.

Software maker Twilio posted robust growth, helped by demand for its digitization products during the pandemic.

Shares of data analytics firm Palantir Technologies fell as the lockup period expired, making more shares available to the public.

Write to Rob Curran at rob.curran@dowjones.com

(END) Dow Jones Newswires

02-18-21 1713ET