Comments by "" (@Robertgriffinne) on "The advertising market is softening, says Ritholtz's Josh Brown" video.

Investors really need to take heed to what Warren said about diversification. Most investors do it for the sake of just diversifying. Maybe one or even two per sector, as long as there are the top one or two in that sector. Also remember too the market goes up and goes down, not by its own but by investors. If a stock falls it's because some investors decided to sell. If a stock rises, its because more investors caught on to a buying opportunity or increased their position.
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