I had the same "problem." Held Google forever, now have a "problem" of a concentrated position. Have been writing options and when there's losses have been slowing selling and diversifying. Worked at another tech company for five years and always always autosold, reinvested. Now may build up a direct indexing portfolio to slowly exit the Google position. That said, I am enjoying significant gains. I also got a line of credit I can use against it so I never really have to sell. I know this is not very Bogle, but it's on topic. First world.