Unlock the Editor’s Digest for freeRoula Khalaf, Editor of the FT, selects her favourite stories in this weekly newsletter.The writer is co-founder and co-chair of Oaktree Capital Management and author of ‘Mastering the Market Cycle: Getting the Odds on Your Side’No one used the phrase ‘‘asset allocation’’ when I joined the investment management industry 55 years ago. Structuring portfolios was a simple matter, generally following the classic “60/40” split between stocks and bonds. Today, invest...