The Nordic region's largest investment company, Investor, Tuesday posted a 12% quarter-on-quarter drop in its closely watched net asset value per share and trimmed its dividend, as weaker equity markets and write-downs on listed and unlisted assets pressured the value of its key holdings.

Investor, the main investment vehicle of Sweden's powerful Wallenberg family, said NAV per share fell to Skr150 ($18) as of December 31, down from Skr170 on September 30 and from Skr203 a year earlier.