Sustainable Investing vs Wine and Gold

What do sustainable investments, wine and gold have in common over the past ten years? Well, for one thing, investments in wine and gold have vastly outperformed an investment in sustainable companies.Below is a chart showing the performance of wine (measured by the Live Ex Fine Wine 100 Index), sustainable equities (as measured by the Dow Jones Sustainability Index), gold (the front month futures contract on COMEX gold), and the S&P500.

Sharpe ratios show that wine has been the best investment followed closely by gold. The S&P 500 has a slightly larger Sharpe ratio then the Dow Jones Sustainability Index, but both Sharpe ratios are negative over the sample period.

wine	djsi	sp500	gold
0.79	-0.12	-0.06	0.78

To combine the concepts of sustainability and wine together, how about a sustainability wine index? An example of this would be an index that follows organic wines.