** Shares in SIG Group SIGNC.S rise around 9% to the top of STOXX 600 .STOXX index after the packaging firm announced Mikko Keto as new CEO
** "With low-hanging opportunities to enhance profitability and new mid-term targets in place, we expect the incoming CEO to prioritize portfolio optimization and outline further self-help measures," analysts at Vontobel say
** They add Keto's track record aligns with the Swiss company's ambitions
** Stock on track for best day since March 2020 if gains hold
(Reporting by Paolo Laudani in Gdansk)
((Paolo.laudani@thomsonreuters.com))