- Diversification allows you to reduce risk without reducing returns
- Negative correlation is key: your portfolio should contain asset classes that tend to move in opposite directions
- Periodical rebalancing is required to keep your traget allocations on mark; it may also increase your returns in the long run.
Unlike me, Fidelity "allows" you to own individual stocks, but warns you against having any stock crossing 5% of the portfolio. This means tracking, researching, buying and selling at least 20 stocks. I find it much easier to stick with index funds and let the day traders and Fidelity experts buy and sell on the news.
All in all, a great article and great advice. They must be reading this blog :-)