In this new role, Tyler will have primary responsibility for the target-date fund series.

Tyler has 30 years of experience in the financial services industry, 21 years of which he spent at American Century Investments, where he played key role in the creation of its target-date funds in 2004 and served as lead portfolio manager and head of the firm’s asset allocation team until his departure in 2009.

Also effective 1 March 2011, Michael Finnegan will depart the Principal LifeTime portfolio management team to broaden his focus on designing and launching investment products and solutions for retail and retirement clients of the Principal Financial Group.

Finnegan will continue in his role as chief investment officer of Principal Funds, overseeing both retail and retirement investment platforms. He will also continue to serve as portfolio advisor to the Principal Global Diversified Income Fund and Principal Diversified Real Asset Fund.

Tim Dunbar, who was promoted to senior vice president of Strategy and Finance at The Principal, will also depart the portfolio management team effective 1 March.

A tenured team consisting of David Blake, James Fennessey, Dirk Laschanzky and Randy Welch remain on the Principal LifeTime portfolios as managers.