Banks looking to diversify their revenue stream with investment management fee income would be well advised to study TriState Capital’s acquisition-fueled buildout of its RIA, Chartwell. The Pittsburgh depository started with an internal wealth management arm, bought $7.5 billion wealth manager Chartwell Investment Partners in early 2014, picked up the $2.5 billion Killen Group in late 2015, and last week announced the acquisition of a $4.0 billion domestic fixed income platform strategy from Aberdeen Asset Management.