Stock price when the opinion was issued
Seems to have grown to a bigger piece of the portfolio than the investor is comfortable with. Doesn't have too strong an opinion on this particular stock. If you want to trim, a great way is to sell a covered call -- you sell somebody the right to buy the stock from you at a higher price.
With shares right now around $194, you can sell a September $200 call for about $4.50. If the stock doesn't go up, then you end up just hanging on to your stock.
A bad acquisition two years ago hit them badly after that new company suffered a negative drug trial. Then, the stock dropped and he sold. There's probably still value in this stock, but he'd rather buy something else.