Bruce Amlicke joined Blackstone Alternative Asset Management, a New York hedge fund-of-funds manager, as chief investment officer; Hal Lindquist was appointed chief investment strategist. Both are new positions. Mr. Lindquist was senior investment officer at Blackstone; he won't be replaced. Mr. Amlicke had been global chief investment officer in the alternative investment solutions group of UBS O'Connor LLC, Chicago. Mike Welch, a UBS managing director, will assume Mr. Amlicke's duties, said spokeswoman Jennifer Plunkett.