On 1 October 2012, SIX Exchange Regulation introduced a new function regarding published notifications for significant shareholders of listed companies. It is now possible to query the currently disclosed shareholder structure for any company listed on SIX Swiss Exchange at the click of a mouse. Previously, disclosure notifications were only sorted chronologically by issuer, date or investor. This new function ensures that the disclosure of shareholdings will remain transparent in future despite there being over 1,000 new notifications every year. The reason for this change was the related amendment made to FINMA's Stock Exchange Ordinance as at 1 January 2012.
You can query significant shareholders via the following link: http://www.six-exchange-regulation.com/obligations/disclosure/major_shareholders_en.html