HELSINKI, Finland--(BUSINESS WIRE)--Regulatory News: Tieto Corporation (HEX:TIE1V)(STO:TIEN): Tieto Corporation STOCK EXCHANGE RELEASE 23 June 2015, 14:00 EET Tieto Corporation has received an announcement pursuant to the Securities Market Act regarding a change in its shareholding. Silchester International Investors LLP has announced that its aggregate holding in Tieto Corporation has risen to 10.00%. Target company: Tieto Corporation, Business Identity Code: 0101138-5 Date of change in holdin