It depends on the amount of risk and diversification you are looking for as well as where you are in your financial career. For example, if you have no college debt, and can afford to live off of your salary alone, leaving RSUs as company stock when they vest is no different than a non-employee buying shares of that stock at the vest price.
Diversification is great but not everyone is in the same financial situation to assume there is a one size fits all rule.
It depends on the amount of risk and diversification you are looking for as well as where you are in your financial career. For example, if you have no college debt, and can afford to live off of your salary alone, leaving RSUs as company stock when they vest is no different than a non-employee buying shares of that stock at the vest price.
Diversification is great but not everyone is in the same financial situation to assume there is a one size fits all rule.