The wool scouring and carpets company (CAV) has been an indifferent performer for many years but it has made up for that by being a regular payer of a generous dividend yield, which over the past 10 years has averaged 9% including imputation credits. A profit warning and the cutting of one of its two interim dividends therefore were particularly shocking and investors quickly deserted the shares. On one day this week, it lost 17.4% to $1.90, returning it to its multi-yea ...