At a travel industry conference Wednesday, United said it has seen a 25% uptick in demand for flights on weekends during which Swift has held concerts abroad. Swift is having a similar effect on domestic travel too, Andrew Nocella, the airline's EVP and chief commercial officer, added.

United Airlines Holdings Inc. tracks megastar Taylor Swift’s globe-spanning Eras tour to make sure they have enough airplane seats for her army of fans.

French advertising holding company Publicis Groupe SA has acquired Mars United Commerce, a global marketing firm that works with online and brick-and-mortar stores.

The acquisition comes as advertising holding companies compete to help brands boost sales online and in stores.