The other piece to the puzzle is that these big time investors have the ability to get out when they make money at a lower cost then the small investor. It is called economy of scale. They put in $1,000,000 and make $200,000 and get out. They pay the broker on both ends. They also may have losses to take against the gains they have. Oh yeah, did I mention that they have enough resources to play the market on the other side. Yes that's right, when the market goes down they make money as well.
So do not be foolish, only invest what you know you can lose without getting hurt financially. Do not, I repeat do not sit around and do nothing if you are in this bad market. Always adjust your portfolio to your specific current tolerance level of risk. Just because you heard them say buy and hold is the way to go, that does not mean your risk level has to hold. If you cannot take the heat get out and wait to get back in. This is not a recommendation by any means because I do not know everyone's situation and I am not telling anyone what to do. All I am saying is that what we see on CNBC is not what we see everyday in the normal investment world.