Bank of America says there's a strong alternative to investors looking to shake up the traditional 60/40 portfolio. The so-called "permanent portfolio" — 25% stocks, 25% bonds, 25% gold, and 25% cash — is having its best 10-year stretch since the early 1990s, the bank said in a note on Friday.Over the last decade, it has delivered an average annual return of 8.7%. Bank of America What's more, 2025 was the portfolio's best single year since 1979, with gains of 23%. Bank of America It's not hard ...