Spirit Airlines Is on Shaky Footing After Judge Blocks JetBlue Deal

Some investors and analysts said the airline might have to seek bankruptcy protection if it couldn’t find another buyer.

JetBlue Seeks Court Approval of its Acquisition of Spirit Airlines

JetBlue Airways is trying to persuade a federal court to let it acquire Spirit Airlines, a deal that the Justice Department says will raise fares and reduce competition.

The Upshot of Microsoft’s Activision Deal: Big Tech Can Get Even Bigger

With the completion of the blockbuster acquisition, the notion that tech giants can grow through “vertical transactions” remains intact.

Microsoft C.E.O. Testifies That Google’s Power in Search Is Ubiquitous

Satya Nadella, the chief executive of Microsoft, is the government’s biggest-name witness in its landmark antitrust case against Google.

‘Unprecedented’ Secrecy in Google Trial as Tech Giants Push to Limit Disclosures

Efforts to seal testimony have increasingly raised questions as the federal antitrust case enters its third week in court.

In Its First Monopoly Trial of Modern Internet Era, U.S. Sets Sights on Google

The 10-week trial, set to begin Tuesday, amps up efforts to rein in Big Tech by targeting the core search business that turned Google into a $1.7 trillion behemoth.

Profiting From Risky Atherectomies That Can Lead to Amputations

Medical device makers have bankrolled a cottage industry of doctors and clinics that perform artery-clearing procedures that can lead to amputations.