For a long time, one way to get market-beating returns was to run towards assets with the highest prices. The bubblelicious basket is stuffed with securities that have been accused of being over-inflated.

The bubble portfolio was created by GAM UK fund manager Paul McNamara.

The frothiest of assets have taken a hit as the prospect of higher interest rates and concerns over an economic slowdown have taken their toll. The bubble portfolio has delivered a total return of -30.93% so far this year, while the S&P 500 has delivered a total return of minus 16%.