BUZZ-Standard Life Aberdeen: day one
** Insurer and asset manager Standard Life Aberdeen up 2.7 pct, among top FTSE 100 gainers, on first trading day of combined co
** Standard (Other OTC: SNDH - news) completes 11 bln stg tie-up with rival fund firm Aberdeen to create Standard Life Aberdeen, with assets of around 670 bln pounds
** Firms are looking to shore up their defences in the face of competition from lower-cost index funds, increased cost of tougher regulations (rahul.b.thomsonreuters.com@reuters.net)