Doherty will bring with him the £145rm Hybrid Capital Bond fund, renamed from Sanlam to Titan.
Titan Wealth acquires Square Mile
As part of the deal, the Tideway UCITS Funds ICAV has appointed Titan Investment Solutions as investment manager of the fund.
Doherty, who has over 35 years' experience in fixed income markets, set-up the Tideway UCITS Funds ICAV and has been lead manager on the Hybrid Capital Bond fund since its inception.
Chris Turdean has also joined Titan from Sanlam to manage and grow the fund as portfolio manager assistant, alongside Doherty.
The Titan Hybrid Capital Bond fund invests in high quality global issuers, lower down in the capital structure to achieve enhanced yield.
Launched in August 2016, it has returned 24.3% in that time, and 11.7% over the last 12 months.
It currently has a yield to maturity of 8.8% and an effective duration of 5.2 years, positioning it well to prosper at the back end of the current rate hiking cycle, the company said.
PE-backed Titan Wealth acquires Ravenscroft's UK investment management business
The fund's distributing share-class has provided investors with a distribution yield of 7.6% over the last 12 months, equal to £6.64 per unit.
Paul Hunt, CEO of Titan Asset Management, said: "We are thrilled to welcome Peter and Chris to Titan. As part of the Titan Investment Solutions team, Peter and Chris will play a key role in building out our in-house fixed income offering, with new and innovative products that meet the needs and requirements of Titan Group's clients and the broader UK wealth management market."
Doherty added: "It is exciting to combine the dynamic growth culture at Titan with an incredible opportunity set in the fixed income markets.
"We look forward to creating and managing differentiated fixed income funds and products for the benefit of private clients both within the Titan Group and across the wider UK wealth management and DFM markets."