The Royal Gazette/Bermuda Stock Exchange Index lost 9.90 points yesterday to close at 3642.85. Argus Insurance Company lost 75 cents and closed at $26.25 after investors traded 234 shares.

Devonshire Industries ? the parent company of Bermuda Paint closed unchanged at $14 after 2800 shares traded hands. Belco Holdings Ltd. also closed unchanged at $41 when investors traded 1000 shares.