Shares in Irish drugmaker yo-yo as US group says it may also bid, then pulls out

Stock and cash offer values Irish drugmaker at £46.50 a share

Shareholders could challenge Shari Redstone’s effort to reunite family media empire

Investment management division says it is co-operating with US regulator

Third attempt to create a wireless group that can better take on Verizon and AT&T

Consortium hopes to snap up Major League Soccer team in deal valuing club at $500m

As top performers are offered pay equal to bankers and hedge fund managers, is the lockstep system under threat?

Cancer treatment behind 63% of revenue could face competition from copycats in 2020

Weeks of talks expected on proposal to reunite companies separated 13 years ago

Doubts hang over acquisitions struck when the industry was in the grip of an M&A frenzy

A deal would reunite Sumner Redstone-controlled companies 13 years after they split

Wave of consolidation in US and activity in UK, China, Germany and Japan drive market

DoJ’s challenge to Time Warner deal will set the stage for future media consolidation

Former chairman will not be renominated to board after saying he is exploring a bid

Broadcom chief made wrong bet trying to use positive Trump ties in takeover bid

Paul Jacobs approaches global investors to back takeover after Broadcom bid blocked

Move comes days after president blocked $142bn bid by Broadcom

Retreat comes after Trump blocks Singapore chipmaker’s pursuit of US rival

Rare move to kill $142bn bid for Qualcomm stokes fears for dealmakers