I created a public equities investment fund in 2009 that has outperformed the market most years since 2009. Its positions have remained quite steady over the years and it has outperformed the S&P 500 significantly. You can see the performance and details here.
I also invest in, advise and sit on the board of early stage startups in healthcare, education and greentech companies.
Some of my favorite private investments were/are SelectMinds, Chart.io, PresenceLearning, DoktorSitesi, Humantelligence, Atolye Istanbul and Complete Solar.