FIRM HAS COOPERVISION <EYE> STOCK, WILL BUY MORE Siebel Capital Management Inc, a California investment adviser, told the Securities and Exchange Commission (SEC) it bought 1.3 mln CooperVision Inc common shares or 5.9 pct of the total outstanding. In its SEC filing, the firm said it "intends to acquire more stock and may attempt to influence management of the company to make major changes in the company's business or corporate structure." Siebel said it made net purchases of 163,200 CooperVision shares since Jan. 1.