Psigma Investment Management merged with sister company Punter Southall Financial Management (PSFM) on 1 December to create a new business called Punter Southall Wealth (PSW), it has confirmed.
In a post on LinkedIn, PSW said it had combined its investment management and financial management arms to create a single entity.
It posted: "We're proud of the success we've achieved thus far, but we think we can bring even better service to our clients by offering input from two kinds of financial services experts rather than just one."
Psigma said it would retain its current name "in order to continue the strong brand, solid growth and ever-increasing reach" it has developed. Psigma IM will continue as a separate division within PSW.
In a statement, Psigma said: "The service and ongoing portfolio management of our client portfolio will continue with no change and the retention of the Psigma brand will, going forward, allow us to focus on the valued external adviser relationships that we have spent many years developing and will continue to develop for many years to come.
"Many financial planning firms offer investment advice and many investment management firms offer financial planning. We are unusual in that we believe both professional disciplines are equally important and that our clients deserve input from two experts rather than one."
It added that its investment process, communication and support to its external advisers would remain unchanged under CIO Tom Becket.
According to PSFM's website, John Howard-Smith, currently CEO at Psigma IM, will head up the combined business. John Hamilton-Hunt, CEO of PSFM, will assume the role of chief operations officer.