ADT Ltd. to 27 percent from 24.1 percent of common shares outstanding.

Westar Capital Inc. acquired 4.09 million ADT shares at $19.12 to $19.75 a share between October 16 and October 28, according to a Schedule 13D filed today with the Securities and Exchange Commission.

In addition, Westar purchased 500 liquid-yield option notes that are convertible into 14,115 ADT shares. Westar spent a total of $79.9 million on the stock and LYONs, according to the SEC filing.m Western Resources, opposed the $4 billion bid that Republic Industries Inc.

recently made to acquire ADT. Republic, controlled by billionaire Wayne Huizenga and Bermuda resident Michael DeGroote, abandoned its bid in late September.