The largest securities class action settlement by a single corporate defendant was announced yesterday (15 May), when Tyco ended a five-year shareholder dispute with a $3bn (£1.5bn) payout.

The US conglomerate agreed to pay $2.975bn plus interest to investors who bought Tyco securities between 1999-2002, after former chief executive Dennis Kozlowski and other senior corporate officers were accused of artificially inflating the company’s value by as much as $5.8bn (£2.9bn).