Bob Brinker Data

[Math Junkie]

Regarding selling Microsoft:

At one time Brinker's guideline was that the purchase price of an individual stock should not be more than 4% of one's portfolio. Somewhere around the mid 1990s he began recommending that the current market value of an individual stock should not be more than 4%. Because MSFT had gone up so much, this could have required selling quite a lot of it. Unfortunately I don't know the date when he made this change.