Career moves

After decades of managing risk for investment clients in volatile markets, Thornburg managing director Chris Ryon is preparing to retire at the end of the year.

Longtime muni lobbyist Michael Decker will now have a working relationship with Bond Dealers of America.

Long-time muni lobbyist Michael Decker talks to the Bond Buyer about his next steps and the challenges facing the muni market.

Academy Securities has hired muni vet Bill Laverty as managing director and head of its municipal underwriting department.

Laura Porter has been named head of U.S. Public Finance at Fitch Ratings.

Orrick brings on healthcare finance lawyer Robyn Helmlinger to the firm’s public finance group as a partner, based in San Francisco. She joins the firm from Squire Patton Boggs where she led their healthcare finance initiative.

Scott Mitnick, who was county administrator of Sutter County, California, will be a director at financial advisory firm KNN Public Finance.

Victor Quiroga Jr. previously was a vice president at Frost Bank.

The longtime municipal and fixed income strategist will become municipal bond client sales and product manager at the electronic trading platform.

Michael Decker has been managing director and co-head of municipal securities at SIFMA since October 2009.